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1904 Commits

Author SHA1 Message Date
Daniel Templeton
bb30bd3771 YARN-6779. DominantResourceFairnessPolicy.DominantResourceFairnessComparator.calculateShares() should be @VisibleForTesting 
(Contributed by Yeliang Cang via Daniel Templeton)
 2017-07-24 12:13:50 -07:00
Sunil G
e315328428 YARN-6102. RMActiveService context to be updated with new RMContext on failover. Contributed by Rohith Sharma K S. 2017-07-24 11:39:03 +05:30
Arun Suresh
077fcf6a96 YARN-6777. Support for ApplicationMasterService processing chain of interceptors. (asuresh) 2017-07-19 12:26:40 -07:00
Rohith Sharma K S
845c4e52bd YARN-6819. Application report fails if app rejected due to nodesize. Contributed by Bibin A Chundatt. 2017-07-19 11:10:52 +05:30
Yufei Gu
daaf530fce YARN-6778. In ResourceWeights, weights and setWeights() should be final. (Daniel Templeton via Yufei Gu) 2017-07-18 16:38:07 -07:00
Sunil G
0b7afc060c Addendum patch for YARN-5731 2017-07-18 11:49:09 +05:30
Jason Lowe
a5ae5ac50e YARN-3260. AM attempt fail to register before RM processes launch event. Contributed by Bibin A Chundatt 2017-07-14 14:56:00 -05:00
bibinchundatt
75c0220b44 YARN-6759. Fix TestRMRestart.testRMRestartWaitForPreviousAMToFinish failure. Contributed by Naganarasimha G R 2017-07-14 13:53:39 +05:30
Yufei Gu
4a574e9a84 YARN-6769. Make schedulables without demand less needy in FairSharePolicy#compare. (Yunfan Zhou via Yufei Gu) 2017-07-13 23:10:10 -07:00
Sunil G
228ddaa31d YARN-6792. Incorrect XML convertion in NodeIDsInfo and LabelsToNodesInfo. Contributed by Giovanni Matteo Fumarola. 2017-07-14 08:07:05 +05:30
Wangda Tan
945c0958bb YARN-6775. CapacityScheduler: Improvements to assignContainers, avoid unnecessary canAssignToUser/Queue calls. (Nathan Roberts via wangda) 
Change-Id: I84ccd54200ccbaae23018ef320028e42b4c3509a
 2017-07-13 10:30:15 -07:00
Sunil G
cf0d0844d6 YARN-5731. Preemption calculation is not accurate when reserved containers are present in queue. Contributed by Wangda Tan. 2017-07-13 16:48:29 +05:30
Xuan
9845bea59c YARN-6689. PlacementRule should be configurable. (Jonathan Hung via xgong) 2017-07-12 15:40:45 -07:00
Sunil G
34f113df5c YARN-6714. IllegalStateException while handling APP_ATTEMPT_REMOVED event when async-scheduling enabled in CapacityScheduler. Contributed by Tao Yang. 2017-07-11 14:52:44 +05:30
Arun Suresh
5496a34c0c YARN-6776. Refactor ApplicaitonMasterService to move actual processing logic to a separate class. (asuresh) 2017-07-10 14:34:58 -07:00
Yufei Gu
3de47ab5ea YARN-6764. Simplify the logic in FairScheduler#attemptScheduling. Contributed by Yufei Gu. 2017-07-09 16:09:12 -07:00
Naganarasimha
626d730bfc YARN-6428. Queue AM limit is not honored in CS always. Contributed by Bibin A Chundatt. 2017-07-09 17:26:09 +05:30
Daniel Templeton
9d27880442 YARN-6410. FSContext.scheduler should be final (Contributed by Yeliang Cang via Daniel Templeton) 2017-07-09 19:34:35 +09:00
Daniel Templeton
c5a0c38d8e YARN-6746. SchedulerUtils.checkResourceRequestMatchingNodePartition() is dead code 
(Contributed by Deepti Sawhney via Daniel Templeton)
 2017-07-09 19:27:32 +09:00
Daniel Templeton
0615985886 YARN-6752. Display reserved resources in web UI per application 
(Contributed by Abdullah Yousufi via Daniel Templeton)
 2017-07-09 19:02:31 +09:00
Naganarasimha
fa1aaee87b YARN-6681. Eliminate double-copy of child queues in canAssignToThisQueue. Contributed by Daryn Sharp. 2017-07-01 12:29:39 +05:30
Andrew Wang
af2773f609 Updating version for 3.0.0-beta1 development 2017-06-29 17:57:40 -07:00
Daniel Templeton
ec97519779 YARN-6751. Display reserved resources in web UI per queue 
(Contributed by Abdullah Yousufi via Daniel Templeton)
 2017-06-29 16:53:50 -07:00
Sunil G
c1edca101c YARN-6280. Introduce deselect query param to skip ResourceRequest from getApp/getApps REST API. Contributed by Lantao Jin. 2017-06-28 15:40:58 -07:00
Yufei Gu
0b77262890 YARN-5876. TestResourceTrackerService#testGracefulDecommissionWithApp fails intermittently on trunk. (Robert Kanter via Yufei Gu) 2017-06-23 13:26:03 -07:00
Sunil G
ca13b224b2 YARN-5892. Support user-specific minimum user limit percentage in Capacity Scheduler. Contributed by Eric Payne. 2017-06-22 23:50:57 -07:00
Naganarasimha
740204b292 YARN-5006. ResourceManager quit due to ApplicationStateData exceed the limit size of znode in zk. Contributed by Bibin A Chundatt. 2017-06-23 07:52:41 +05:30
Akira Ajisaka
099dfe92a9
YARN-6713. Fix dead link in the Javadoc of FairSchedulerEventLog.java. Contributed by Weiwei Yang. 2017-06-20 17:20:27 +09:00
Naganarasimha
ee89ac84e6 YARN-6680. Avoid locking overhead for NO_LABEL lookups. Contributed by Daryn Sharp 2017-06-19 22:42:45 +05:30
Naganarasimha
e9c2aa1bc3 YARN-6467. CSQueueMetrics needs to update the current metrics for default partition only. Contributed by Manikandan R. 2017-06-19 21:31:40 +05:30
bibinchundatt
d64c842743 YARN-6703. RM startup failure with old state store due to version mismatch. Contributed by Varun Saxena 2017-06-12 18:07:43 +05:30
Eric Payne
5578af8603 YARN-6585. RM fails to start when upgrading from 2.7 for clusters with node labels. Contributed by Sunil G. 2017-06-09 16:16:34 -05:00
Naganarasimha
99634d10ed YARN-6682. Improve performance of AssignmentInformation datastructures. Contributed by Daryn Sharp. 2017-06-09 11:10:13 +05:30
Carlo Curino
547cb53e8a YARN-6634. [API] Refactor ResourceManager WebServices to make API explicit. (Giovanni Matteo Fumarola via curino) 2017-06-07 13:41:06 -07:00
Jian He
7311015ace YARN-6683. Invalid event: COLLECTOR_UPDATE at KILLED. Contributed by Rohith Sharma K S 2017-06-05 13:16:57 -07:00
Daniel Templeton
d5b71e4175 YARN-6246. Identifying starved apps does not need the scheduler writelock 
(Contributed by Karthik Kambatla via Daniel Templeton)
 2017-05-31 15:48:04 -07:00
Jonathan Eagles
cbfed0e82f YARN-6497. Method length of ResourceManager#serviceInit() is too long (Gergely Novák via jeagles) 2017-05-31 10:18:42 -05:00
Andrew Wang
16ad896d5c Update maven version for 3.0.0-alpha4 development 2017-05-26 14:09:44 -07:00
Daniel Templeton
d81372dfad YARN-6646. Modifier 'static' is redundant for inner enums 
(Contributed by ZhangBing Lin via Daniel Templeton)
 2017-05-26 12:05:48 -07:00
Yufei Gu
87590090c8 YARN-6582. FSAppAttempt demand can be updated atomically in updateDemand(). (Karthik Kambatla via Yufei Gu) 2017-05-25 14:22:13 -07:00
Jason Lowe
3fd6a2da4e YARN-6643. TestRMFailover fails rarely due to port conflict. Contributed by Robert Kanter 2017-05-25 16:07:52 -05:00
Wangda Tan
8e0f83e49a YARN-6493. Print requested node partition in assignContainer logs. (Jonathan Hung via wangda) 
Change-Id: Ib20326daac10acad363befb0ae0998441fa5b32d
 2017-05-22 14:28:55 -07:00
Wangda Tan
c583ab02c7 YARN-2113. Add cross-user preemption within CapacityScheduler's leaf-queue. (Sunil G via wangda) 
Change-Id: I9b19f69788068be05b3295247cdd7b972f8a573c
 2017-05-22 14:26:13 -07:00
Jian He
e135c0b207 YARN-6627. Use deployed webapp folder to launch new YARN UI. Contributed by Sunil G 2017-05-19 20:14:03 -07:00
Yufei Gu
66bba8c024 YARN-6249. TestFairSchedulerPreemption fails inconsistently. (Tao Jie via Yufei Gu) 2017-05-19 14:53:27 -07:00
Rohith Sharma K S
d87a63a901 HADOOP-14412. HostsFileReader#getHostDetails is very expensive on large clusters. Contributed by Jason Lowe. 2017-05-17 08:27:45 +05:30
Jason Lowe
489f85933c YARN-6603. NPE in RMAppsBlock. Contributed by Jason Lowe 2017-05-16 09:26:44 -05:00
Carlo Curino
6600abbb5c YARN-6587. Refactor of ResourceManager#startWebApp in a Util class. (Giovanni Matteo Fumarola via curino). 2017-05-12 17:48:55 -07:00
Haibo Chen
6c35001b9f YARN-6580. Incorrect logger for FairSharePolicy. (Vrushali C via Haibo Chen) 2017-05-12 13:05:40 -07:00
Daniel Templeton
90cb5b4635 YARN-6380. FSAppAttempt keeps redundant copy of the queue 2017-05-11 13:47:02 -07:00
Min Shen
2ada100da7 YARN-5543. ResourceManager SchedulingMonitor could potentially terminate the preemption checker thread. Contributed by Min Shen. 2017-05-11 13:25:31 -07:00
Brahma Reddy Battula
4aae2d40a3 HADOOP-14410. Correct spelling of 'beginning' and variants. Contributed By Dongtao Zhang 2017-05-11 23:33:45 +05:30
Carlo Curino
5cb6e3e082 YARN-6473. Create ReservationInvariantChecker to validate ReservationSystem + Scheduler operations. 2017-05-10 14:49:25 -07:00
Daniel Templeton
e7654c4a1f YARN-6571. Fix JavaDoc issues in SchedulingPolicy 
(Contributed by Weiwei Yang via Daniel Templeton)
 2017-05-10 14:34:13 -07:00
Jason Lowe
6099deebcb YARN-6552. Increase YARN test timeouts from 1 second to 10 seconds. Contributed by Eric Badger 2017-05-10 08:47:48 -05:00
Karthik Kambatla
166be0ee95 YARN-3742. YARN RM will shut down if ZKClient creation times out. (Daniel Templeton via kasha) 2017-05-09 14:44:16 -07:00
Andrew Wang
543aac9f28 HADOOP-14386. Rewind trunk from Guava 21.0 back to Guava 11.0.2. 2017-05-09 09:22:53 -07:00
Chris Douglas
e4f34ecb04 HADOOP-14390. Correct spelling of 'succeed' and variants. Contributed by Dongtao Zhang 2017-05-05 12:10:50 -07:00
Daniel Templeton
9f0aea0ee2 YARN-6481. Yarn top shows negative container number in FS 
(Contributed by Tao Jie via Daniel Templeton)
 2017-05-02 13:06:47 -07:00
Subru Krishnan
6bf42e48ef YARN-5331. Extend RLESparseResourceAllocation with period for supporting recurring reservations in YARN ReservationSystem. (Sangeetha Abdu Jyothi via Subru). 2017-05-01 18:48:36 -07:00
Subru Krishnan
e514fc432a YARN-6542. Fix the logger in TestAlignedPlanner and TestGreedyReservationAgent. 2017-05-01 18:10:07 -07:00
Subru Krishnan
a3a615eeab YARN-4359. Update LowCost agents logic to take advantage of YARN-4358. (Jonathan Yaniv and Ishai Menache via Subru). 2017-05-01 16:01:07 -07:00
Naganarasimha
30fc580196 YARN-6519. Fix warnings from Spotbugs in hadoop-yarn-server-resourcemanager. Contributed by Weiwei Yang. 2017-05-01 20:15:27 +05:30
Daniel Templeton
2e52789edf YARN-2962. ZKRMStateStore: Limit the number of znodes under a znode (Contributed by Varun Sexena via Daniel Templeton) 2017-04-28 13:30:28 -07:00
Wangda Tan
2ba21d6376 YARN-6392. Add submit time to Application Summary log. (Zhihai Xu via wangda) 2017-04-24 13:17:35 -07:00
Eric Payne
52adf71914 YARN-5617. AMs only intended to run one attempt can be run more than once? Contributed by Jason Lowe. 2017-04-24 12:03:28 -05:00
Daniel Templeton
dd43b895c2 YARN-6202. Configuration item Dispatcher.DISPATCHER_EXIT_ON_ERROR_KEY is disregarded 
(Contributed by Yufei Gu via Daniel Templeton)
 2017-04-19 11:44:55 -07:00
Sunil G
9ff25408bc YARN-6164. Expose Queue Configurations per Node Label through YARN client api. Contributed by Benson Qiu. 2017-04-19 20:39:09 +05:30
Chris Douglas
af8e9842d2 YARN-6451. Add RM monitor validating metrics invariants. Contributed by Carlo Curino 2017-04-18 10:29:44 -07:00
Junping Du
6ed9d36224 YARN-6304. Skip rm.transitionToActive call to RM if RM is already active. Contributed by Rohith Sharma K S. 2017-04-17 15:51:10 -07:00
Jason Lowe
4168805502 YARN-6480. Timeout is too aggressive for TestAMRestart.testPreemptedAMRestartOnRMRestart. Contributed by Eric Badger 2017-04-14 17:15:48 -05:00
Eric Payne
a41f8dd58e YARN-5994. TestCapacityScheduler.testAMLimitUsage fails intermittently. Contributed by Eric Badger 2017-04-14 10:53:09 -05:00
Karthik Kambatla
c3375175d6 YARN-6432. FairScheduler: Reserve preempted resources for corresponding applications. (Miklos Szegedi via kasha) 2017-04-12 14:21:20 -07:00
Wangda Tan
4d4ad0ebb7 YARN-6439. Fix ReservationSystem creation of default ReservationQueue. (Carlo Curino via wangda) 2017-04-11 14:56:18 -07:00
Naganarasimha
7d873c465b YARN-6463. Correct spelling mistake in FileSystemRMStateStore. Contributed by Yeliang Cang. 2017-04-11 22:42:08 +05:30
Jason Lowe
0e065f2ede YARN-6195. Export UsedCapacity and AbsoluteUsedCapacity to JMX. Contributed by Benson Qiu 2017-04-11 08:44:18 -05:00
Konstantinos Karanasos
7999318af1 YARN-6344. Add parameter for rack locality delay in CapacityScheduler. (kkaranasos) 2017-04-10 15:34:44 -07:00
Karthik Kambatla
2aa8967809 YARN-6298. Metric preemptCall is not used in new preemption. (Yufei Gu via kasha) 2017-04-07 17:31:59 -07:00
Rohith Sharma K S
1a9439e299 YARN-6424. TimelineCollector is not stopped when an app finishes in RM. Contributed by Varun Saxena. 2017-04-06 10:15:22 +05:30
Daniel Templeton
a2c57bb70d YARN-6381. FSAppAttempt has several variables that should be final 
(Contributed by Ameet Zaveri via Daniel Templeton)
 2017-04-05 16:07:24 -07:00
Andrew Wang
539ef5aa2e HFDS-11596. hadoop-hdfs-client jar is in the wrong directory in release tarball. Contributed by Yuanbo Liu. 2017-04-05 16:04:09 -07:00
Karthik Kambatla
b4c4f36594 YARN-6448. Continuous scheduling thread crashes while sorting nodes. (Yufei Gu via kasha) 2017-04-05 15:43:14 -07:00
Varun Saxena
7d963c477a YARN-6437. TestSignalContainer#testSignalRequestDeliveryToNM fails intermittently (Jason Lowe via Varun Saxena) 2017-04-06 01:20:41 +05:30
Wangda Tan
87e2ef8c98 YARN-6406. Remove SchedulerRequestKeys when no more pending ResourceRequest. (Arun Suresh via wangda) 2017-04-05 11:28:30 -07:00
Varun Saxena
19b89c4c7b YARN-6420. RM startup failure due to wrong order in nodelabel editlog (Bibin A Chundatt via Varun Saxena) 2017-04-05 09:38:35 +05:30
Karthik Kambatla
9cc04b4708 YARN-6436. TestSchedulingPolicy#testParseSchedulingPolicy timeout is too low. (Eric Badger via kasha) 2017-04-04 17:08:33 -07:00
Wangda Tan
3fdae0a2b6 YARN-6109. Add an ability to convert ChildQueue to ParentQueue. (Xuan Gong via wangda) 2017-04-04 14:39:01 -07:00
Chris Douglas
6eba79232f HADOOP-14271. Correct spelling of 'occurred' and variants. Contributed by Yeliang Cang 2017-04-03 20:13:14 -07:00
Eric Payne
318bfb01bc YARN-6354. LeveldbRMStateStore can parse invalid keys when recovering reservations. Contributed by Jason Lowe 2017-03-31 12:30:35 -05:00
Jason Lowe
4d1fac5df2 YARN-6411. Clean up the overwrite of createDispatcher() in subclass of MockRM. Contributed by Yufei Gu 2017-03-31 10:05:34 -05:00
Daniel Templeton
640ba1d23f YARN-5685. RM configuration allows all failover methods to disabled when automatic failover is enabled 2017-03-29 12:38:11 -07:00
Jason Lowe
fdf8f8ebca YARN-6359. TestRM#testApplicationKillAtAcceptedState fails rarely due to race condition. Contributed by Robert Kanter 2017-03-28 09:33:26 -05:00
Robert Kanter
9bae6720cb YARN-6050. AMs can't be scheduled on racks or nodes (rkanter) 2017-03-27 17:23:13 -07:00
Wangda Tan
cd014d57aa YARN-6339. Improve performance for createAndGetApplicationReport. (Yunjiong Zhao via wangda) 2017-03-27 13:29:09 -07:00
Akira Ajisaka
b63ae854f9
YARN-6379. Remove unused argument in ClientRMService. Contributed by Kai Sasaki. 2017-03-27 11:23:41 +09:00
Sunil G
cffea251be YARN-5956. Refactor ClientRMService for unify error handling across apis. Contributed by Kai Sasaki. 2017-03-25 22:26:19 +05:30
Tsuyoshi Ozawa
84ddedc0b2 HADOOP-10101. Update guava dependency to the latest version. (ozawa) 2017-03-25 10:06:52 +09:00
Ravi Prakash
d4f73e7e27 HDFS-11574. Spelling mistakes in the Java source. Contributed by Hu Xiaodong. 2017-03-24 09:38:17 -07:00
Daniel Templeton
0a05c5c598 YARN-6284. hasAlreadyRun should be final in ResourceManager.StandByTransitionRunnable 
(Contributed by Laura Adams via Daniel Templeton)
 2017-03-21 14:15:40 -07:00
Varun Saxena
35034653d0 YARN-6353. Clean up OrderingPolicy javadoc (Daniel Templeton via Varun Saxena) 2017-03-20 23:29:09 +05:30
Sunil G
2d0e24eb01 YARN-6328. Fix a spelling mistake in CapacityScheduler. Contributed by Jin Yibo. This closes #202 2017-03-15 14:48:05 +05:30
Ray Chiang
4c66a8d19b YARN-6331. Fix flakiness in TestFairScheduler#testDumpState. (Yufei Gu via rchiang) 2017-03-14 15:09:47 -07:00
Naganarasimha
0a3aa40fe7 YARN-6327. Removing queues from CapacitySchedulerQueueManager and ParentQueue should be done with iterator. Contributed by Jonathan Hung. 2017-03-15 01:22:25 +05:30
Ray Chiang
4db9cc70d0 YARN-6042. Dump scheduler and queue state information into FairScheduler DEBUG log. (Yufei Gu via rchiang) 2017-03-10 16:13:31 -08:00
Jason Lowe
9649c27864 YARN-6321. TestResources test timeouts are too aggressive. Contributed by Eric Badger 2017-03-10 13:06:54 -06:00
Karthik Kambatla
a96afae125 YARN-6264. AM not launched when a single vcore is available on the cluster. (Yufei Gu via kasha) 2017-03-09 23:11:54 -08:00
Daniel Templeton
846a0cd678 YARN-1047. Expose # of pre-emptions as a queue counter (Contributed by Karthik Kambatla via Daniel Templeton) 2017-03-09 17:51:47 -08:00
Daniel Templeton
822a74f2ae YARN-6300. NULL_UPDATE_REQUESTS is redundant in TestFairScheduler (Contributed by Yuanbo Liu via Daniel Templeton) 2017-03-09 12:14:33 -08:00
Jason Lowe
d7762a5511 YARN-6165. Intra-queue preemption occurs even when preemption is turned off for a specific queue. Contributed by Eric Payne 2017-03-08 16:46:09 -06:00
Sunil G
1eb8186703 YARN-6207. Move application across queues should handle delayed event processing. Contributed by Bibin A Chundatt. 2017-03-08 12:04:30 +05:30
Daniel Templeton
e0c239cdbd YARN-6287. RMCriticalThreadUncaughtExceptionHandler.rmContext should be final (Contributed by Corey Barker via Daniel Templeton) 2017-03-07 11:58:48 -08:00
Sunil G
c1386a90d7 YARN-6248. user is not removed from UsersManager’s when app is killed with pending container requests. Contributed by Eric Payne. 2017-03-04 13:46:35 +05:30
Junping Du
8db7a8c3ae YARN-6271. yarn rmadin -getGroups returns information from standby RM. Contributed by Jian He. 2017-03-03 14:39:31 -08:00
Ray Chiang
2148b83993 YARN-6218. Fix TestAMRMClient when using FairScheduler. (Miklos Szegedi via rchiang) 2017-03-03 13:04:51 -08:00
Jason Lowe
e58fc76030 YARN-6263. NMTokenSecretManagerInRM.createAndGetNMToken is not thread safe. Contributed by Haibo Chen 2017-03-03 08:23:08 -06:00
Jian He
235203dffd YARN-6153. KeepContainer does not work when AM retry window is set. Contributed by kyungwan nam 2017-02-28 13:23:36 -08:00
Xuan
e0bb867c3f YARN-6189: Improve application status log message when RM restarted when 
app is in NEW state. Contributed by Junping Du
 2017-02-28 11:04:56 -08:00
Wangda Tan
eac6b4c35c YARN-6216. Unify Container Resizing code paths with Container Updates making it scheduler agnostic. (Arun Suresh via wangda) 2017-02-28 10:35:50 -08:00
Karthik Kambatla
f187d63816 YARN-6231. FairSchedulerTestBase helper methods should call scheduler.update to avoid flakiness. (kasha) 2017-02-27 22:10:57 -08:00
Naganarasimha
5f5b031d1f YARN-5703. ReservationAgents are not correctly configured. Contributed by Manikandan R. 2017-02-27 20:38:29 +05:30
Karthik Kambatla
fbfe86deea YARN-6172. FSLeafQueue demand update needs to be atomic. (Miklos Szegedi via kasha) 2017-02-26 20:36:33 -08:00
Karthik Kambatla
815d53506f YARN-6215. FairScheduler preemption and update should not run concurrently. (Tao Jie via kasha) 2017-02-26 20:16:36 -08:00
Karthik Kambatla
694e680d20 YARN-6222. TestFairScheduler.testReservationMetrics is flaky. (Yufei Gu via kasha) 2017-02-23 15:21:52 -08:00
Sunil G
a207aa9930 YARN-6211. Synchronization improvement for moveApplicationAcrossQueues and updateApplicationPriority. Contributed by Bibin A Chundatt. 2017-02-23 14:19:07 +05:30
Karthik Kambatla
b10e962224 YARN-6194. Cluster capacity in SchedulingPolicy is updated only on allocation file reload. (Yufei Gu via kasha) 2017-02-22 15:58:49 -08:00
Karthik Kambatla
718ad9f6ee YARN-6210. FairScheduler: Node reservations can interfere with preemption. (kasha) 2017-02-22 15:46:07 -08:00
Wangda Tan
1a6ca75f38 YARN-6143. Fix incompatible issue caused by YARN-3583. (Sunil G via wangda) 2017-02-22 11:17:09 -08:00
Karthik Kambatla
dbbfcf74ab YARN-6193. FairScheduler might not trigger preemption when using DRF. (kasha) 2017-02-17 14:07:31 -08:00
Daniel Templeton
c7a36e6130 YARN-6125. The application attempt's diagnostic message should have a maximum size 
(Contributed by Andras Piros via Daniel Templeton)
 2017-02-17 13:40:58 -08:00
Daniel Templeton
9a92837786 YARN-6188. Fix OOM issue with decommissioningNodesWatcher in the case of clusters with 
large number of nodes (Contributed by Ajay Jadhav via Daniel Templeton)
 2017-02-17 13:13:46 -08:00
Karthik Kambatla
a77f432449 YARN-6171. ConcurrentModificationException on FSAppAttempt.containersToPreempt. (Miklos Szegedi via kasha) 2017-02-16 14:54:58 -08:00
Rohith Sharma K S
e63a7814d2 YARN-6200. addendum to fix compilation error caused by reverting YARN-5068. 2017-02-16 18:19:57 +05:30
Rohith Sharma K S
a393e84c6f YARN-6200. Reverting since the same functionality achieved by YARN-1623. 
Revert "YARN-5068. Expose scheduler queue to application master. (Harish Jaiprakash via rohithsharmaks)"

This reverts commit b7ac85259c.
 2017-02-16 18:00:25 +05:30
Karthik Kambatla
74dd142250 YARN-5798. Set UncaughtExceptionHandler for all FairScheduler threads. (Yufei Gu via kasha) 2017-02-16 00:03:09 -08:00
Karthik Kambatla
11be3f70e0 YARN-4212. FairScheduler: Can't create a DRF queue under a FAIR policy queue. (Yufei Gu via kasha) 2017-02-15 23:51:22 -08:00
Karthik Kambatla
6c25dbcdc0 YARN-6163. FS Preemption is a trickle for severely starved applications. (kasha) 2017-02-15 23:16:12 -08:00
Varun Saxena
b7613e0f40 YARN-6156. AM blacklisting to consider node label partition (Bibin A Chundatt via Varun Saxena) 2017-02-15 14:48:17 +05:30
Karthik Kambatla
353a9b2d91 YARN-6061. Addendum. Remove extraneous change. 2017-02-14 15:19:52 -08:00
Karthik Kambatla
652679aa8a YARN-6061. Add an UncaughtExceptionHandler for critical threads in RM. (Yufei Gu via kasha) 2017-02-14 13:39:41 -08:00
Arun Suresh
aaf106fde3 YARN-5966. AMRMClient changes to support ExecutionType update. (asuresh) 2017-02-14 06:09:10 -08:00
Karthik Kambatla
646c6d6509 YARN-3933. FairScheduler: Multiple calls to completedContainer are not safe. (Shiwei Guo and Miklos Szegedi via kasha) 2017-02-13 11:26:30 -08:00
Karthik Kambatla
08f93978f3 YARN-6144. FairScheduler: preempted resources can become negative. (Miklos Szegedi via kasha) 2017-02-09 14:45:04 -08:00
Karthik Kambatla
9b85053583 YARN-6112. UpdateCallDuration is calculated only when debug logging is enabled. (Yufei Gu via kasha) 2017-02-09 13:09:32 -08:00
Wangda Tan
5fb723bb77 YARN-5889. Improve and refactor user-limit calculation in Capacity Scheduler. (Sunil G via wangda) 2017-02-09 10:23:50 -08:00
Daniel Templeton
3e06475307 YARN-4658. Typo in o.a.h.yarn.server.resourcemanager.scheduler.fair.TestFairScheduler comment (Contributed by Udai Potluri via Daniel Templeton) 2017-01-31 16:25:33 -08:00
Daniel Templeton
87852b6ef4 YARN-6103. Log updates for ZKRMStateStore (Contributed by Daniel Sturman via Daniel Templeton) 2017-01-30 21:44:48 -08:00
Karthik Kambatla
11e44bdda7 YARN-6131. FairScheduler: Lower update interval for faster tests. (kasha) 2017-01-30 13:35:23 -08:00
Sunil G
165f07f51a YARN-6123. [YARN-5864] Add a test to make sure queues of orderingPolicy will be updated when childQueues is added or removed. Contributed by Wangda Tan. 2017-01-27 18:37:51 +05:30
Daniel Templeton
f85b74ccf9 YARN-4975. Fair Scheduler: exception thrown when a parent queue marked 'parent' has configured child queues 
(Contributed by Yufei Gu via Daniel Templeton)
 2017-01-26 10:31:09 -08:00
Karthik Kambatla
abedb8a9d8 YARN-5830. FairScheduler: Avoid preempting AM containers. (Yufei Gu via kasha) 2017-01-25 12:17:28 -08:00
Rohith Sharma K S
0101267d9d YARN-6082. Invalid REST api response for getApps since queueUsagePercentage is coming as INF. Contributed by Sunil G. 2017-01-24 10:59:55 +05:30
Wangda Tan
ce832059db YARN-5864. Capacity Scheduler - Queue Priorities. (wangda) 2017-01-23 10:52:14 -08:00
Jason Lowe
69fa81679f YARN-5910. Support for multi-cluster delegation tokens. Contributed by Jian He 2017-01-23 17:12:51 +00:00
Sunil G
3fa0d540df YARN-6031. Application recovery has failed when node label feature is turned off during RM recovery. Contributed by Ying Zhang. 2017-01-23 12:19:35 +05:30
Sangjin Lee
b01514f65b YARN-5928. Move ATSv2 HBase backend code into a new module that is only dependent at runtime by yarn servers. Contributed by Haibo Chen. 2017-01-19 20:52:55 -08:00
Andrew Wang
5d8b80ea9b Preparing for 3.0.0-alpha3 development 2017-01-19 15:50:07 -08:00
Wangda Tan
72054a817d YARN-5556. CapacityScheduler: Support deleting queues without requiring a RM restart. (Naganarasimha G R via wangda) 2017-01-18 13:31:33 -08:00
Karthik Kambatla
e224c96234 YARN-5831. FairScheduler: Propagate allowPreemptionFrom flag all the way down to the app. (Yufei Gu via kasha) 2017-01-17 17:01:31 -08:00
Daniel Templeton
695f110f93 YARN-6071. Fix incompatible API change on AM-RM protocol due to YARN-3866 (trunk only) 
(Contributed by Wangda Tan via Daniel Templeton)
 2017-01-17 12:55:47 -08:00
Sunil G
d3170f9eba YARN-6081. LeafQueue#getTotalPendingResourcesConsideringUserLimit should deduct reserved from pending to avoid unnecessary preemption of reserved container. Contributed by Wangda Tan. 2017-01-13 18:22:29 +05:30
Naganarasimha
a6b06f7179 YARN-6072. RM unable to start in secure mode. Contributed by Ajith S. 2017-01-12 06:40:41 +05:30
Daniel Templeton
7979939428 YARN-5554. MoveApplicationAcrossQueues does not check user permission on the target queue 
(Contributed by Wilfred Spiegelenburg via Daniel Templeton)
 2017-01-11 14:34:10 -08:00
Jason Lowe
357eab9566 YARN-5416. TestRMRestart#testRMRestartWaitForPreviousAMToFinish failed intermittently due to not wait SchedulerApplicationAttempt to be stopped. Contributed by Junping Du 2017-01-11 17:13:37 +00:00
Junping Du
4db119b7b5 YARN-6079. Fix simple spelling errors in yarn test code. Contributed by vijay. 2017-01-10 18:20:27 -08:00
Sunil G
9594c35dcb YARN-5899. Debug log in AbstractCSQueue#canAssignToThisQueue needs improvement. Contributed by Ying Zhang. 2017-01-10 14:08:01 +05:30
Junping Du
945db55f2e YARN-4148. When killing app, RM releases app's resource before they are released by NM. Contributed by Jason Lowe. 2017-01-09 18:14:46 -08:00
Wangda Tan
287d3d6804 YARN-3955. Support for application priority ACLs in queues of CapacityScheduler. (Sunil G via wangda) 2017-01-09 08:40:39 -08:00
Daniel Templeton
ac16400e1f YARN-6022. Revert changes of AbstractResourceRequest (Contributed by Wangda Tan via Daniel Templeton) 2017-01-07 08:24:30 -08:00
Naganarasimha
a59df15757 YARN-6015. AsyncDispatcher thread name can be set to improved debugging. Contributed by Ajith S. 2017-01-07 08:11:58 +05:30
Jian He
020316458d YARN-6009. Skip validating app timeout value on recovery. Contributed by Rohith Sharma K S 2017-01-06 18:19:09 -08:00
Arun Suresh
2977bc6a14 YARN-6040. Introduce api independent PendingAsk to replace usage of ResourceRequest within Scheduler classes. (Wangda Tan via asuresh) 2017-01-06 09:59:57 -08:00
Wangda Tan
0a55bd841e YARN-5959. RM changes to support change of container ExecutionType. (Arun Suresh via wangda) 2017-01-05 10:31:05 -08:00
Rohith Sharma K S
e49e0a6e37 YARN-5988. RM unable to start in secure setup. Contributed by Ajith S. 2017-01-04 12:09:29 +05:30
Wangda Tan
f69a107aec YARN-6025. Fix synchronization issues of AbstractYarnScheduler#nodeUpdate and its implementations. (Naganarasimha G R via wangda) 
(cherry picked from commit e0f2379312)
 2017-01-03 14:53:36 -08:00
Wangda Tan
ab1faa4ba8 Revert "Fix synchronization issues of AbstractYarnScheduler#nodeUpdate and its implementations. (Naganarasimha G R via wangda)" to add correct JIRA number 
This reverts commit e0f2379312.
 2017-01-03 14:53:13 -08:00
Wangda Tan
e0f2379312 Fix synchronization issues of AbstractYarnScheduler#nodeUpdate and its implementations. (Naganarasimha G R via wangda) 2017-01-03 14:46:41 -08:00
Daniel Templeton
165d01a73e YARN-5931. Document timeout interfaces CLI and REST APIs (Contributed by Rohith Sharma K S via Daniel Templeton) 2016-12-30 08:41:52 -08:00
Robert Kanter
f216276d21 YARN-4882. Change the log level to DEBUG for recovering completed applications (templedf via rkanter) 2016-12-28 15:21:52 -08:00
Sunil G
9ca54f4810 YARN-5906. Update AppSchedulingInfo to use SchedulingPlacementSet. Contributed by Wangda Tan. 2016-12-28 22:48:19 +05:30
Sunil G
f6715b26b6 YARN-6024. Capacity Scheduler 'continuous reservation looking' doesn't work when sum of queue's used and reserved resources is equal to max. Contributed by Wangda Tan. 2016-12-28 12:33:02 +05:30
Wangda Tan
0840b4329b YARN-5756. Add state-machine implementation for scheduler queues. (Xuan Gong via wangda) 2016-12-27 21:18:33 -08:00
Robert Kanter
1bbd023275 YARN-5962. Spelling errors in logging and exceptions for resource manager code (gsohn via rkanter) 2016-12-27 13:35:34 -08:00
Daniel Templeton
e216e8e233 HADOOP-13932. Fix indefinite article in comments (Contributed by LiXin Ge via Daniel Templeton) 2016-12-27 13:03:16 -08:00
Arun Suresh
ac1e5d4f77 YARN-5938. Refactoring OpportunisticContainerAllocator to use SchedulerRequestKey instead of Priority and other misc fixes (asuresh) 2016-12-27 12:40:44 -08:00
Karthik Kambatla
c3973e7080 YARN-5969. FairShareComparator: Cache value of getResourceUsage for better performance. (zhangshilong via kasha) 2016-12-27 12:30:35 -08:00
Karthik Kambatla
4d3f73acc0 YARN-6000. Make AllocationFileLoaderService.Listener public. (Tao Jie via kasha) 2016-12-23 11:40:56 -08:00
Sunil G
ef2dd7b78c YARN-5650. Render Application Timeout value in web UI. Contributed by Akhil PB. 2016-12-19 11:44:03 +05:30
Arun Suresh
2273a74c1f YARN-5646. Add documentation and update config parameter names for scheduling of OPPORTUNISTIC containers. (Konstantinos Karanasos via asuresh) 2016-12-16 08:14:34 -08:00
Jian He
ada876cd1d Revert YARN-4126. RM should not issue delegation tokens in unsecure mode. 2016-12-13 20:49:54 -08:00
Robert Kanter
4b149a1e77 YARN-4457. Cleanup unchecked types for EventHandler (templedf via rkanter) 2016-12-09 17:28:25 -08:00
Jian He
a6410a542e YARN-5709. Cleanup leader election configs and pluggability. Contribtued by Karthik Kambatla 2016-12-09 17:00:37 -08:00
Arun Suresh
b0aace21b1 YARN-5982. Simplify opportunistic container parameters and metrics. (Konstantinos Karanasos via asuresh) 2016-12-09 16:41:25 -08:00
Sunil G
74d0066d33 YARN-5970. Validate application update timeout request parameters. Contributed by Rohith Sharma K S. 2016-12-08 15:53:56 +05:30
Daniel Templeton
9f5d2c4fff YARN-5136. Error in handling event type APP_ATTEMPT_REMOVED to the scheduler 
(Contributed by Wilfred Spiegelenburg via Daniel Templeton)
 2016-12-07 11:12:14 -08:00
Sunil
ab923a53fc YARN-5965. Retrospect ApplicationReport#getApplicationTimeouts. Contributed by Rohith Sharma K S 2016-12-08 00:27:25 +05:30
Rohith Sharma K S
563480dccd YARN-5932. Retrospect moveApplicationToQueue in align with YARN-5611. Contributed by Sunil G. 2016-12-07 10:39:14 +05:30
Naganarasimha
f3b8ff54ab YARN-5921. Incorrect synchronization in RMContextImpl#setHAServiceState/getHAServiceState. Contributed by Varun Saxena 2016-12-06 06:53:38 +05:30
Jian He
43ebff2e35 YARN-5559. Analyse 2.8.0/3.0.0 jdiff reports and fix any issues. Contributed by Akira Ajisaka & Wangda Tan 2016-12-05 11:39:34 -08:00
Jian He
f885160f4a YARN-5746. The state of the parentQueue and its childQueues should be synchronized. Contributed by Xuan Gong 2016-12-02 16:17:31 -08:00
Daniel Templeton
5bd18c49bd YARN-5929. Missing scheduling policy in the FS queue metric. (Contributed by Yufei Gu via Daniel Templeton) 2016-12-02 13:55:42 -08:00
Li Lu
69fb70c31a YARN-5761. Separate QueueManager from Scheduler. (Xuan Gong via gtcarrera9) 2016-11-30 13:38:42 -08:00
Daniel Templeton
b3befc021b YARN-4997. Update fair scheduler to use pluggable auth provider (Contributed by Tao Jie via Daniel Templeton) 2016-11-30 09:50:33 -08:00
Kai Zheng
cfd8076f81 Revert due to an error "HDFS-10994. Support an XOR policy XOR-2-1-64k in HDFS. Contributed by Sammi Chen" 
This reverts commit 5614f847b2ef2a5b70bd9a06edc4eba06174c6.
 2016-11-30 15:44:52 +08:00
Daniel Templeton
3b9d3acd20 YARN-5890. FairScheduler should log information about AM-resource-usage and max-AM-share for queues 
(Contributed by Yufei Gu via Daniel Templeton)
 2016-11-29 12:46:05 -08:00
Daniel Templeton
25f9872be6 YARN-5774. MR Job stuck in ACCEPTED status without any progress in Fair Scheduler 
if set yarn.scheduler.minimum-allocation-mb to 0. (Contributed by Yufei Gu via Daniel Templeton)
 2016-11-29 09:40:49 -08:00
Kai Zheng
5d5614f847 HDFS-10994. Support an XOR policy XOR-2-1-64k in HDFS. Contributed by Sammi Chen 2016-11-28 14:34:44 +08:00
Akira Ajisaka
209e805430 HADOOP-13506. Redundant groupid warning in child projects. Contributed by Kai Sasaki. 2016-11-28 14:34:57 +09:00
Sunil
eb0a483ed0 YARN-4206. Add Application timeouts in Application report and CLI. Contributed by Rohith Sharma K S. 2016-11-24 18:18:42 +05:30
Rohith Sharma K S
e15c20edba YARN-5920. Fix deadlock in TestRMHA.testTransitionedToStandbyShouldNotHang. Contributed by Varun Saxena. 2016-11-24 12:18:38 +05:30
Daniel Templeton
10468529a9 YARN-4752. Improved preemption in FairScheduler. (kasha) 
Contains:
YARN-5605. Preempt containers (all on one node) to meet the requirement of starved applications
YARN-5821. Drop left-over preemption-related code and clean up method visibilities in the Schedulable hierarchy
YARN-5783. Verify identification of starved applications.
YARN-5819. Verify fairshare and minshare preemption
YARN-5885. Cleanup YARN-4752 branch for merge

Change-Id: Iee0962377d019dd64dc69a020725d2eaf360858c
 2016-11-23 19:48:59 -10:00
Jian He
1f12867a69 YARN-5649. Add REST endpoints for updating application timeouts. Contributed by Rohith Sharma K S 2016-11-23 16:25:39 -08:00
Arun Suresh
005850b28f YARN-5918. Handle Opportunistic scheduling allocate request failure when NM is lost. (Bibin A Chundatt via asuresh) 2016-11-23 09:53:31 -08:00
Daniel Templeton
83cc7263af YARN-5722. FairScheduler hides group resolution exceptions when assigning queue (Contributed by Wilfred Spiegelenburg via Daniel Templeton) 2016-11-22 11:16:00 -08:00
Rohith Sharma K S
a926f895c1 YARN-5865. Retrospect updateApplicationPriority api to handle state store exception in align with YARN-5611. Contributed by Sunil G. 2016-11-22 14:49:15 +05:30
Rohith Sharma K S
d65603517e YARN-5375. invoke MockRM#drainEvents implicitly in MockRM methods to reduce test failures. Contributed by sandflee. 2016-11-16 15:14:00 +05:30
Xiao Chen
f121d0b036 YARN-5875. TestTokenClientRMService#testTokenRenewalWrongUser fails. Contributed by Gergely Novák. 2016-11-15 13:58:11 -08:00
Arun Suresh
3219b7b4ac YARN-4597. Introduce ContainerScheduler and a SCHEDULED state to NodeManager container lifecycle. (asuresh) 2016-11-15 07:56:25 -08:00
Rohith Sharma K S
b7070f3308 YARN-5874. RM -format-state-store and -remove-application-from-state-store commands fail with NPE. Contributed by Varun Saxena. 2016-11-15 10:58:25 +05:30
Rohith Sharma K S
296c5de0cf YARN-5873. RM crashes with NPE if generic application history is enabled. Contributed by Varun Saxena. 2016-11-15 10:56:28 +05:30
Karthik Kambatla
79448d4ab1 YARN-4033. In FairScheduler, parent queues should also display queue status. (Siqi Li via kasha) 2016-11-13 21:38:36 -08:00
Jian He
fad9609d13 YARN-5825. ProportionalPreemptionalPolicy should use readLock over LeafQueue instead of synchronized block. Contributed by Sunil G 2016-11-11 15:16:21 -08:00
Wangda Tan
ede1a473f5 YARN-5552. Add Builder methods for common yarn API records. (Tao Jie via wangda) 2016-11-11 13:34:56 -08:00
Naganarasimha
503e73e849 YARN-5545. Fix issues related to Max App in capacity scheduler. Contributed by Bibin A Chundatt 2016-11-11 20:48:31 +05:30
Eric Payne
93eeb13164 YARN-4218. Metric for resource*time that was preempted. Contributed by Chang Li. 2016-11-10 22:35:12 +00:00
Karthik Kambatla
86ac1ad9fd YARN-5453. FairScheduler#update may skip update demand resource of child queue/app if current demand reached maxResource. (sandflee via kasha) 2016-11-09 23:44:02 -08:00
Jian He
bcc15c6290 YARN-5611. Provide an API to update lifetime of an application. Contributed by Rohith Sharma K S 2016-11-09 16:08:05 -08:00
Naganarasimha
edbee9e609 YARN-4498. Application level node labels stats to be available in REST (addendum patch). Contributed by Bibin A Chundatt. 2016-11-10 05:00:05 +05:30
Daniel Templeton
59ee8b7a88 YARN-4329. [YARN-5437] Allow fetching exact reason as to why a submitted app 
is in ACCEPTED state in Fair Scheduler (Contributed by Yufei Gu)
 2016-11-09 13:11:37 -08:00
Arun Suresh
283fa33feb YARN-5823. Update NMTokens in case of requests with only opportunistic containers. (Konstantinos Karanasos via asuresh) 2016-11-09 00:11:25 -08:00
Andrew Wang
e1c6ef2efa HADOOP-13789. Hadoop Common includes generated test protos in both jar and test-jar. Contributed by Sean Busbey. 2016-11-08 16:33:55 -08:00
Jason Lowe
3f93ac0733 YARN-5356. NodeManager should communicate physical resource capability to ResourceManager. Contributed by Inigo Goiri 2016-11-08 22:01:26 +00:00
Jian He
de3b4aac56 YARN-5716. Add global scheduler interface definition and update CapacityScheduler to use it. Contributed by Wangda Tan 2016-11-07 10:14:39 -08:00
Wangda Tan
c00b5d1e51 YARN-5804. New UI2 is not able to launch with jetty 9 upgrade post HADOOP-10075. (Sunil G via wangda) 
(cherry picked from commit ddebaa6b7ae1031899139d153d57df5387d60542)
 2016-11-06 13:13:31 -08:00
Wangda Tan
3de0da2a76 YARN-5698. [YARN-3368] Launch new YARN UI under hadoop web app port. (Sunil G via wangda) 2016-11-06 13:13:31 -08:00
Wangda Tan
817d5f4c96 YARN-4849. Addendum patch to fix javadocs. (Sunil G via wangda) 2016-11-06 13:13:31 -08:00
Wangda Tan
c85cc3b56e YARN-4515. [YARN-3368] Support hosting web UI framework inside YARN RM. (Sunil G via wangda) 
YARN-5000. [YARN-3368] App attempt page is not loading when timeline server is not started (Sunil G via wangda)
YARN-5038. [YARN-3368] Application and Container pages shows wrong values when RM is stopped. (Sunil G via wangda)
 2016-11-06 13:13:31 -08:00
Jason Lowe
6bb741ff0e YARN-5837. NPE when getting node status of a decommissioned node after an RM restart. Contributed by Robert Kanter 2016-11-04 22:20:21 +00:00
Arun Suresh
0aafc122d4 YARN-2995. Enhance UI to show cluster resource utilization of various container Execution types. (Konstantinos Karanasos via asuresh) 2016-11-04 07:31:54 -07:00
Sunil
19b3779ae7 YARN-5802. updateApplicationPriority api in scheduler should ensure to re-insert app to correct ordering policy. Contributred by Bibin A Chundatt 2016-11-04 16:07:28 +05:30
Jason Lowe
352cbaa7a5 YARN-4862. Handle duplicate completed containers in RMNodeImpl. Contributed by Rohith Sharma K S 2016-11-03 13:54:31 +00:00
Varun Saxena
377919010b YARN-5815. Random failure of TestApplicationPriority.testOrderOfActivatingThePriorityApplicationOnRMRestart (Bibin A Chundatt via Varun Saxena) 2016-11-03 00:37:09 +05:30
Varun Saxena
7d2d8d25ba YARN-5788. Apps not activiated and AM limit resource in UI and REST not updated after -replaceLabelsOnNode (Bibin A Chundatt via Varun Saxena) 2016-11-01 15:32:04 +05:30
Karthik Kambatla
733aa99313 YARN-4998. Minor cleanup to UGI use in AdminService. (Daniel Templeton via kasha) 2016-10-31 16:26:01 -07:00
Wangda Tan
90dd3a8148 YARN-2009. CapacityScheduler: Add intra-queue preemption for app priority support. (Sunil G via wangda) 2016-10-31 15:18:31 -07:00
Daniel Templeton
2528bea67f YARN-4396. Log the trace information on FSAppAttempt#assignContainer (Contributed by Yiqun Li via Daniel Templeton) 2016-10-31 13:34:25 -07:00
Daniel Templeton
cc2c993a8a YARN-4907. Make all MockRM#waitForState consistent. (Contributed by Yufei Gu via Daniel Templeton) 2016-10-31 13:20:56 -07:00
Naganarasimha
e0bebbbcdd YARN-4498. Application level node labels stats to be available in REST. Contributed by Bibin A Chundatt 2016-10-31 04:38:20 +05:30
Arun Suresh
aa3cab1eb2 YARN-5799. Fix Opportunistic Allocation to set the correct value of Node Http Address. (asuresh) 2016-10-29 02:03:57 -07:00
Varun Saxena
1c8ab41e8b YARN-5773. RM recovery too slow due to LeafQueue#activateApplications (Bibin A Chundatt via Varun Saxena) 2016-10-29 13:47:39 +05:30
Jason Lowe
1eae719bce YARN-4963. capacity scheduler: Make number of OFF_SWITCH assignments per heartbeat configurable. Contributed by Nathan Roberts 2016-10-28 17:30:15 +00:00