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5479 Commits

Author SHA1 Message Date
David Tucker
fc2435cb5c
HADOOP-15136. Correct typos in filesystem.md (#2314) 
Contributed by David Tucker
 2020-09-18 18:28:14 +01:00
Xiaoyu Yao
6adf8462ba
HADOOP-17208. LoadBalanceKMSClientProvider#deleteKey should invalidateCache via all KMSClientProvider instances. (#2259) 2020-09-17 10:39:19 -07:00
Uma Maheswara Rao G
e4cb0d3514
HDFS-15578: Fix the rename issues with fallback fs enabled (#2305). Contributed by Uma Maheswara Rao G. 
Co-authored-by: Uma Maheswara Rao G <umagangumalla@cloudera.com>
 2020-09-16 22:43:00 -07:00
Uma Maheswara Rao G
d2779de3f5
HDFS-15532: listFiles on root/InternalDir will fail if fallback root has file. (#2298). Contributed by Uma Maheswara Rao G. 2020-09-12 17:06:39 -07:00
Steve Loughran
958cab804e
Revert "HADOOP-17244. S3A directory delete tombstones dir markers prematurely. (#2280)" 
This reverts commit 9960c01a25.

Change-Id: I820534c3292f2a343693d835f625488c325fb5d6
 2020-09-11 18:07:49 +01:00
1996fanrui
56ebabd426
HADOOP-17222. Create socket address leveraging URI cache (#2241) 
Contributed by fanrui.

Signed-off-by: Mingliang Liu <liuml07@apache.org>
Signed-off-by: He Xiaoqiao <hexiaoqiao@apache.org>
 2020-09-10 22:30:52 -07:00
zz
12a316cdf9
HADOOP-15891. provide Regex Based Mount Point In Inode Tree (#2185). Contributed by Zhenzhao Wang. 
Co-authored-by: Zhenzhao Wang <zhenzhaowang@gmail.com>
 2020-09-10 21:20:32 -07:00
Steve Loughran
9960c01a25
HADOOP-17244. S3A directory delete tombstones dir markers prematurely. (#2280) 
This changes directory tree deletion so that only files are incrementally deleted
from S3Guard after the objects are deleted; the directories are left alone
until metadataStore.deleteSubtree(path) is invoke.

This avoids directory tombstones being added above files/child directories,
which stop the treewalk and delete phase from working.

Also:

* Callback to delete objects splits files and dirs so that
any problems deleting the dirs doesn't trigger s3guard updates
* New statistic to measure #of objects deleted, alongside request count.
* Callback listFilesAndEmptyDirectories renamed listFilesAndDirectoryMarkers
  to clarify behavior.
* Test enhancements to replicate the failure and verify the fix

Contributed by Steve Loughran
 2020-09-10 17:03:52 +01:00
Takanobu Asanuma
e5fe326270
HADOOP-17165. Implement service-user feature in DecayRPCScheduler. (#2240) 2020-09-09 09:56:58 -07:00
Steve Loughran
2029556dbb
HADOOP-17181. Handle transient stream read failures in FileSystem contract tests (#2286) 
Contributed by Steve Loughran.

* Fixes AbstractContractSeekTest test to use readFully
* Doesn't do this to AbstractContractUnbufferTest test as it changes the test too much.
Instead just notes in the error that this may be transient

The issue is that read(buffer) doesn't guarantee that the buffer is filled, only that it will
read up to a point, and that may be just be the amount of data left in the TCP packet.
readFully corrects for this, but using it in the unbuffer test runs the risk that what
is tested for in terms of unbuffering doesn't actually get validated.
 2020-09-09 11:58:26 +01:00
Bharat Viswanadham
8a3952436c
HADOOP-17245. Add OzoneFileSystem classes to core-default.xml. (#2276) 2020-09-04 18:38:48 -07:00
Uma Maheswara Rao G
b3660d0147
HDFS-15529: getChildFilesystems should include fallback fs as well (#2234). Contributed by Uma Maheswara Rao G. 2020-09-03 11:06:20 -07:00
He Xiaoqiao
7e671f3b65 HADOOP-17235. Erasure Coding: Remove dead code from common side. Contributed by Fei Hui. 2020-09-01 11:35:55 +08:00
Steve Loughran
c392d9022a
HDFS-15471. TestHDFSContractMultipartUploader failing (#2252) 
Contributed by Steve Loughran
(Was: broken by Steve Loughran)
 2020-08-28 15:39:09 +01:00
Ayush Saxena
bfd99f31fd HADOOP-17232. Erasure Coding: Typo in document. Contributed by Fei Hui. 2020-08-28 17:38:23 +05:30
sguggilam
d8aaa8c338
HADOOP-17159. Make UGI support forceful relogin from keytab ignoring the last login time (#2249) 
Contributed by Sandeep Guggilam.

Signed-off-by: Mingliang Liu <liuml07@apache.org>
Signed-off-by: Steve Loughran <stevel@apache.org>
 2020-08-26 23:45:21 -07:00
Mingliang Liu
5e52955112
Revert "HADOOP-17159 Ability for forceful relogin in UserGroupInformation class (#2197)" 
This reverts commit a932796d0c.
 2020-08-26 10:41:10 -07:00
sguggilam
a932796d0c
HADOOP-17159 Ability for forceful relogin in UserGroupInformation class (#2197) 
Contributed by Sandeep Guggilam.

Signed-off-by: Mingliang Liu <liuml07@apache.org>
Signed-off-by: Steve Loughran <stevel@apache.org>
 2020-08-24 23:39:57 -07:00
Joey
960fb0aa4f
HADOOP-16925. MetricsConfig incorrectly loads the configuration whose value is String list in the properties file (#1896) 
Contributed by Jiayi Liu
 2020-08-24 14:01:48 +01:00
S O'Donnell
17cd8a1b16 HADOOP-17209. Erasure Coding: Native library memory leak. Contriubted by Sean Chow 2020-08-24 12:00:35 +01:00
Uma Maheswara Rao G
dd013f2fdf
HDFS-15533: Provide DFS API compatible class, but use ViewFileSystemOverloadScheme inside. (#2229). Contributed by Uma Maheswara Rao G. 2020-08-19 09:30:41 -07:00
Steve Loughran
5092ea62ec HADOOP-13230. S3A to optionally retain directory markers. 
This adds an option to disable "empty directory" marker deletion,
so avoid throttling and other scale problems.

This feature is *not* backwards compatible.
Consult the documentation and use with care.

Contributed by Steve Loughran.

Change-Id: I69a61e7584dc36e485d5e39ff25b1e3e559a1958
 2020-08-15 12:51:08 +01:00
Akira Ajisaka
141c62584b
HADOOP-17204. Fix typo in Hadoop KMS document. Contributed by Xieming Li. 2020-08-12 16:08:36 +09:00
Siyao Meng
3fd3aeb621
HDFS-15492. Make trash root inside each snapshottable directory (#2176) 2020-08-11 08:52:16 -07:00
Gautham B A
909f1e82d3
HADOOP-17196. Fix C/C++ standard warnings (#2208) 
* Passing C/C++ standard flags -std is
  not cross-compiler friendly as not all
  compilers support all values.
* Thus, we need to make use of the
  appropriate flags provided by CMake in
  order to specify the C/C++ standards.

Signed-off-by: Akira Ajisaka <aajisaka@apache.org>
 2020-08-11 16:35:08 +09:00
Uma Maheswara Rao G
8955a6ceb7
HDFS-15515: mkdirs on fallback should throw IOE out instead of suppressing and returning false (#2205) 
* HDFS-15515: mkdirs on fallback should throw IOE out instead of suppressing and returning false

* Used LambdaTestUtils#intercept in test
 2020-08-11 00:01:58 -07:00
sguggilam
2986058e7f
HADOOP-17164. UGI loginUserFromKeytab doesn't set the last login time (#2178) 
Contributed by Sandeep Guggilam.

Signed-off-by: Mingliang Liu <liuml07@apache.org>
Signed-off-by: Steve Loughran <stevel@apache.org>
 2020-08-04 10:30:06 -07:00
Akira Ajisaka
c40cbc57fa
HADOOP-17091. [JDK11] Fix Javadoc errors (#2098) 2020-08-03 10:46:51 +09:00
belugabehr
e60096c377
HADOOP-17141. Add Capability To Get Text Length (#2157) 
Contributed by David Mollitor
 2020-07-24 10:37:28 +01:00
Akira Ajisaka
d5b4766158
HADOOP-17147. Dead link in hadoop-kms/index.md.vm. Contributed by Xieming Li. 2020-07-23 00:39:49 +09:00
Uma Maheswara Rao G
ac9a07b51a
HDFS-15478: When Empty mount points, we are assigning fallback link to self. But it should not use full URI for target fs. (#2160). Contributed by Uma Maheswara Rao G. 2020-07-21 23:29:10 -07:00
Masatake Iwasaki
1b29c9bfee
HADOOP-17138. Fix spotbugs warnings surfaced after upgrade to 4.0.6. (#2155) 2020-07-22 13:40:20 +09:00
Chen Liang
3833c616e0 HDFS-15404. ShellCommandFencer should expose info about source. Contributed by Chen Liang. 2020-07-20 12:49:58 -07:00
Ayush Saxena
f2033de234 HADOOP-17119. Jetty upgrade to 9.4.x causes MR app fail with IOException. Contributed by Bilwa S T. 2020-07-20 22:13:48 +05:30
Ayush Saxena
6bcb24d269 HADOOP-17100. Replace Guava Supplier with Java8+ Supplier in Hadoop. Contributed by Ahmed Hussein. 2020-07-18 14:33:43 +05:30
Mukund Thakur
b21cb91c7f
HADOOP-17130. Configuration.getValByRegex() shouldn't be updating the results while fetching. (#2142) 
Contributed by Mukund Thakur
 2020-07-16 18:09:59 +01:00
Ahmed Hussein
1f71c4ae71 HADOOP-17099. Replace Guava Predicate with Java8+ Predicate 
Signed-off-by: Jonathan Eagles <jeagles@gmail.com>
 2020-07-15 11:39:06 -05:00
Erik Krogen
317fe4584a HADOOP-17127. Use RpcMetrics.TIMEUNIT to initialize rpc queueTime and processingTime. Contributed by Jim Brennan. 2020-07-14 11:22:25 -07:00
Hanisha Koneru
e62d8f8412 HADOOP-17116. Skip Retry INFO logging on first failover from a proxy 2020-07-13 12:55:34 -07:00
Steve Loughran
b9fa5e0182
HDFS-13934. Multipart uploaders to be created through FileSystem/FileContext. 
Contributed by Steve Loughran.

Change-Id: Iebd34140c1a0aa71f44a3f4d0fee85f6bdf123a3
 2020-07-13 13:30:02 +01:00
lfengnan
84b74b335c
HDFS-15447 RBF: Add top real owners metrics for delegation tokens (#2110) 2020-07-12 00:10:12 -07:00
Uma Maheswara Rao G
3e70006639
HDFS-15464: ViewFsOverloadScheme should work when -fs option pointing to remote cluster without mount links (#2132). Contributed by Uma Maheswara Rao G. 2020-07-11 23:50:04 -07:00
Siyao Meng
0e694b20b9
HDFS-15462. Add fs.viewfs.overload.scheme.target.ofs.impl to core-default.xml (#2131) 2020-07-09 12:38:52 -07:00
Xiaoyu Yao
f91a8ad88b
HADOOP-17079. Optimize UGI#getGroups by adding UGI#getGroupsSet. (#2085) 2020-07-09 11:33:37 -07:00
Uma Maheswara Rao G
dc0626b5f2
HDFS-15449. Optionally ignore port number in mount-table name when picking from initialized uri. Contributed by Uma Maheswara Rao G. 2020-07-06 18:50:03 -07:00
Madhusoodan Pataki
2f500e4635
HADOOP-17081. MetricsSystem doesn't start the sink adapters on restart (#2089) 
Contributed by Madhusoodan P
 2020-07-06 16:25:42 +01:00
Uma Maheswara Rao G
1f2a80b5e5
HDFS-15430. create should work when parent dir is internalDir and fallback configured. Contributed by Uma Maheswara Rao G. 2020-07-04 00:12:10 -07:00
Abhishek Das
3b8d0f803f
HADOOP-17032. Fix getContentSummary in ViewFileSystem to handle multiple children mountpoints pointing to different filesystems (#2060). Contributed by Abhishek Das. 2020-07-01 12:58:35 +05:30
Virajith Jalaparti
bed0a3a374
HDFS-15436. Default mount table name used by ViewFileSystem should be configurable (#2100) 
* HDFS-15436. Default mount table name used by ViewFileSystem should be configurable

* Replace Constants.CONFIG_VIEWFS_DEFAULT_MOUNT_TABLE use in tests

* Address Uma's comments on PR#2100

* Sort lists in test to match without concern to order

* Address comments, fix checkstyle and fix failing tests

* Fix checkstyle
 2020-06-26 13:19:16 -07:00
Uma Maheswara Rao G
d5e1bb6155
HDFS-15429. mkdirs should work when parent dir is an internalDir and fallback configured. Contributed by Uma Maheswara Rao G. 2020-06-26 01:29:38 -07:00
lfengnan
84110d850e
HDFS-15383. RBF: Add support for router delegation token without watch (#2047) 
Improving router's performance for delegation tokens related operations. It achieves the goal by removing watchers from router on tokens since based on our experience. The huge number of watches inside Zookeeper is degrading Zookeeper's performance pretty hard. The current limit is about 1.2-1.5 million.
 2020-06-23 13:12:29 -07:00
He Xiaoqiao
fa14e4bc00 HADOOP-17068. Client fails forever when namenode ipaddr changed. Contributed by Sean Chow. 2020-06-23 16:59:51 +08:00
Uma Maheswara Rao G
7c02d1889b
HDFS-15427. Merged ListStatus with Fallback target filesystem and InternalDirViewFS. Contributed by Uma Maheswara Rao G. 2020-06-23 01:42:25 -07:00
Uma Maheswara Rao G
b27810aa60
HDFS-15418. ViewFileSystemOverloadScheme should represent mount links as non symlinks. Contributed by Uma Maheswara Rao G. 2020-06-20 00:32:02 -07:00
belugabehr
100ec8e870
HADOOP-17009: Embrace Immutability of Java Collections 2020-06-19 10:23:43 -07:00
Mehakmeet Singh
2bfb22840a
HADOOP-17020. Improve RawFileSystem Performance (#2063) 
Contributed by : Mehakmeet Singh

Co-authored-by: Rajesh Balamohan
Co-authored-by: Mehakmeet Singh
 2020-06-17 16:15:26 +01:00
Ayush Saxena
c8ed33cd2a HADOOP-9851. dfs -chown does not like "+" plus sign in user name. Contributed by Andras Bokor. 2020-06-17 13:55:40 +05:30
Uma Maheswara Rao G
785b1def95
HDFS-15387. FSUsage#DF should consider ViewFSOverloadScheme in processPath. Contributed by Uma Maheswara Rao G. 2020-06-12 14:32:19 -07:00
Vinayakumar B
e154084770
HADOOP-17046. Support downstreams' existing Hadoop-rpc implementations using non-shaded protobuf classes (#2026) 2020-06-12 23:16:33 +05:30
Uma Maheswara Rao G
93b121a971
HADOOP-17060. Clarify listStatus and getFileStatus behaviors inconsistent in the case of ViewFs implementation for isDirectory. Contributed by Uma Maheswara Rao G. 2020-06-10 15:00:02 -07:00
Mingliang Liu
0c25131ca4
HADOOP-17047. TODO comment exist in trunk while related issue HADOOP-6223 is already fixed. Contributed by Rungroj Maipradit 2020-06-08 11:28:56 -07:00
Mingliang Liu
9f242c215e
HADOOP-17059. ArrayIndexOfboundsException in ViewFileSystem#listStatus. Contributed by hemanthboyina 2020-06-08 10:11:30 -07:00
Ayush Saxena
a8610c15c4
HDFS-15396. Fix TestViewFileSystemOverloadSchemeHdfsFileSystemContract#testListStatusRootDir. Contributed by Ayush Saxena. 2020-06-07 13:29:10 -07:00
Uma Maheswara Rao G
3ca15292c5
HDFS-15394. Add all available fs.viewfs.overload.scheme.target.<scheme>.impl classes in core-default.xml bydefault. Contributed by Uma Maheswara Rao G. 2020-06-06 08:11:57 -07:00
Abhishek Das
e7dd02768b
HADOOP-17029. Return correct permission and owner for listing on internal directories in ViewFs. Contributed by Abhishek Das. 2020-06-05 14:56:51 -07:00
Mike
97c98ce531
HADOOP-14566. Add seek support for SFTP FileSystem. (#1999) 
Contributed by Mikhail Pryakhin
 2020-06-03 11:37:40 +01:00
Xiaoyu Yao
6288e15118 HADOOP-16828. Zookeeper Delegation Token Manager fetch sequence number by batch. Contributed by Fengnan Li. 2020-06-02 11:53:32 -07:00
Uma Maheswara Rao G
ed83c865dd
HDFS-15321. Make DFSAdmin tool to work with ViewFileSystemOverloadScheme. Contributed by Uma Maheswara Rao G. 2020-06-02 11:09:26 -07:00
Dhiraj
9fe4c37c25
HADOOP-17052. NetUtils.connect() throws unchecked exception (UnresolvedAddressException) causing clients to abort (#2036) 
Contributed by Dhiraj Hegde.

Signed-off-by: Mingliang Liu <liuml07@apache.org>
 2020-06-01 10:49:17 -07:00
S O'Donnell
19f26a020e HADOOP-7002. Wrong description of copyFromLocal and copyToLocal in documentation. Contributed by Andras Bokor. 2020-05-29 14:36:56 +01:00
S O'Donnell
d9e8046a1a HADOOP-14698. Make copyFromLocals -t option available for put as well. Contributed by Andras Bokor. 2020-05-29 10:32:37 +01:00
Wanqiang Ji
d9838f2d42
HADOOP-17055. Remove residual code of Ozone (#2039) 2020-05-29 16:49:18 +09:00
Uma Maheswara Rao G
4734c77b4b
HDFS-15322. Make NflyFS to work when ViewFsOverloadScheme's scheme and target uris schemes are same. Contributed by Uma Maheswara Rao G. 2020-05-21 21:34:58 -07:00
Akira Ajisaka
52b21de1d8
HADOOP-17049. javax.activation-api and jakarta.activation-api define overlapping classes (#2027) 
* Removed javax.activation-api from dependency
 2020-05-22 11:19:11 +09:00
Kei Kori
1a3c6bb33b
HDFS-15353. Use sudo instead of su to allow nologin user for secure DataNode (#2018) 2020-05-21 10:07:23 +09:00
Abhishek Das
ce4ec74453
HADOOP-17024. ListStatus on ViewFS root (ls "/") should list the linkFallBack root (configured target root). Contributed by Abhishek Das. 2020-05-18 22:27:12 -07:00
Akira Ajisaka
27601fc79e
HADOOP-17042. Hadoop distcp throws 'ERROR: Tools helper ///usr/lib/hadoop/libexec/tools/hadoop-distcp.sh was not found'. Contributed by Aki Tanaka. 2020-05-18 15:36:20 +09:00
Uma Maheswara Rao G
ac4a2e11d9
HDFS-15306. Make mount-table to read from central place ( Let's say from HDFS). Contributed by Uma Maheswara Rao G. 2020-05-14 17:29:35 -07:00
Mike
017d24e970
HADOOP-17036. TestFTPFileSystem failing as ftp server dir already exists. 
Contributed by Mikhail Pryakhin.
 2020-05-14 18:28:00 +01:00
Joseph Smith
d60496e6c6
BytesWritable causes OOME when array size reaches Integer.MAX_VALUE. (#393) 2020-05-13 00:20:35 +05:30
Ayush Saxena
936bf09c37 HDFS-15300. RBF: updateActiveNamenode() is invalid when RPC address is IP. Contributed by xuzq. 2020-05-12 21:54:54 +05:30
Elixir Kook
a3f945fb84
HADOOP-17035. fixed typos (timeout, interruped) (#2007) 
Co-authored-by: Sungpeo Kook <elixir.kook@kakaocorp.com>
 2020-05-12 10:50:04 -05:00
S O'Donnell
29dddb8a14 HDFS-15255. Consider StorageType when DatanodeManager#sortLocatedBlock(). Contributed by Lisheng Sun. 2020-05-12 15:07:51 +01:00
Akira Ajisaka
328eae9a14
HADOOP-16768. SnappyCompressor test cases wrongly assume that the compressed data is always smaller than the input data. (#2003) 2020-05-11 14:44:18 +09:00
Akira Ajisaka
c784ba370e
HDFS-15343. TestConfiguredFailoverProxyProvider is failing. (#2001) 2020-05-08 17:18:23 +09:00
Mingliang Liu
e9e1ead089
HADOOP-17027. Add tests for reading fair call queue capacity weight configs. Contributed by Fengnan Li 2020-05-07 16:50:23 -07:00
Uma Maheswara Rao G
9c8236d04d
HDFS-15305. Extend ViewFS and provide ViewFileSystemOverloadScheme implementation with scheme configurable. Contributed by Uma Maheswara Rao G. 2020-05-04 17:55:40 -07:00
Mingliang Liu
263c76b678
HADOOP-17011. Tolerate leading and trailing spaces in fs.defaultFS. Contributed by Ctest 
Signed-off-by: Ayush Saxena <ayushsaxena@apache.org>
 2020-04-30 14:15:28 -07:00
Ayush Saxena
6bdab3723e HADOOP-16957. NodeBase.normalize doesn't removing all trailing slashes. Contributed by Ayush Saxena. 2020-04-30 19:55:20 +05:30
S O'Donnell
9ca6298a9a HDFS-15285. The same distance and load nodes don't shuffle when consider DataNode load. Contributed by Lisheng Sun. 2020-04-29 15:56:06 +01:00
lfengnan
4202750040
HADOOP-17010. Add queue capacity support for FairCallQueue (#1977) 2020-04-28 16:14:55 -07:00
Mike
18d7dfbf35
HDFS-1820. FTPFileSystem attempts to close the outputstream even when it is not initialised. (#1952) 
Contributed by Mikhail Pryakhin.
 2020-04-27 14:43:51 +01:00
Dhiraj
453c9c9a67
HDFS-15281. Make sure ZKFC uses dfs.namenode.rpc-address to bind to host address (#1964) 
Contributed by Dhiraj Hegde.

Signed-off-by: Mingliang Liu <liuml07@apache.org>
Signed-off-by: Inigo Goiri <inigoiri@apache.org>
 2020-04-25 13:04:32 -07:00
Ayush Saxena
ef9a6e775c HADOOP-16886. Add hadoop.http.idle_timeout.ms to core-default.xml. Contributed by Lisheng Sun. 2020-04-25 13:07:32 +05:30
Mingliang Liu
af85971a58
HADOOP-17001. The suffix name of the unified compression class. Contributed by bianqi 2020-04-22 12:36:33 -07:00
Steve Loughran
42711081e3
HADOOP-16986. S3A to not need wildfly on the classpath. (#1948) 
HADOOP-16986. S3A to not need wildfly JAR on its classpath.

Contributed by Steve Loughran

This is a successor to HADOOP-16346, which enabled the S3A connector
to load the native openssl SSL libraries for better HTTPS performance.

That patch required wildfly.jar to be on the classpath. This
update:

* Makes wildfly.jar optional except in the special case that 
"fs.s3a.ssl.channel.mode" is set to "openssl"

* Retains the declaration of wildfly.jar as a compile-time
dependency in the hadoop-aws POM. This means that unless
explicitly excluded, applications importing that published
maven artifact will, transitively, add the specified
wildfly JAR into their classpath for compilation/testing/
distribution.

This is done for packaging and to offer that optional
speedup. It is not mandatory: applications importing
the hadoop-aws POM can exclude it if they choose.
 2020-04-20 14:32:13 +01:00
Ayush Saxena
79e03fb622 HADOOP-16971. TestFileContextResolveAfs#testFileContextResolveAfs creates dangling link and fails for subsequent runs. Contributed by Ctest. 2020-04-20 01:59:18 +05:30
Masatake Iwasaki
ac40daece1
HADOOP-16972. Ignore AuthenticationFilterInitializer for KMSWebServer. (#1961) 2020-04-18 06:38:25 +09:00
belugabehr
eca05917d6
HADOOP-16951: Tidy Up Text and ByteWritables Classes. 
1. Remove superfluous code
2. Remove superfluous comments
3. Checkstyle fixes
4. Remove methods that simply call super.method()
5. Use Java 8 facilities to streamline code where applicable
6. Simplify and unify some of the constructs between the two classes
7. Expanding of the arrays be 1.5x instead of 2x per expansion.
 2020-04-17 08:16:12 -07:00
Ayush Saxena
3edbe8708a HADOOP-16958. NPE when hadoop.security.authorization is enabled but the input PolicyProvider for ZKFCRpcServer is NULL. Contributed by Ctest. 2020-04-14 02:13:42 +05:30