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Mukund Thakur e8f9af6f2a
HADOOP-17250 Lot of short reads can be merged with readahead. (#3110) 
Introducing fs.azure.readahead.range parameter which can be set by the user.
Data will be populated in buffer for random reads as well which leads to fewer
remote calls.

This patch also changes the seek implementation to perform a lazy seek. The
actual seek is done when a read is initiated and data is not present in the buffer else
data is returned from the buffer thus reducing the number of remote storage calls.

Contributed By: Mukund Thakur

Change-Id: Ib920eedd0087caa150afa4d4c23e89df56b29e83
2021-07-05 11:23:32 +01:00
.github HADOOP-15184. Add GitHub pull request template. (#1419) 2019-09-11 11:10:11 +09:00
dev-support HADOOP-17756. Increase precommit job timeout from 20 hours to 24 hours. (#3090) 2021-06-14 10:21:30 +09:00
hadoop-assemblies Preparing for 3.3.2 development 2021-05-19 21:52:37 +08:00
hadoop-build-tools Preparing for 3.3.2 development 2021-05-19 21:52:37 +08:00
hadoop-client-modules Preparing for 3.3.2 development 2021-05-19 21:52:37 +08:00
hadoop-cloud-storage-project Preparing for 3.3.2 development 2021-05-19 21:52:37 +08:00
hadoop-common-project HDFS-16075. Use empty array constants present in StorageType and DatanodeInfo to avoid creating redundant objects (#3115) 2021-06-21 10:28:05 +09:00
hadoop-dist Preparing for 3.3.2 development 2021-05-19 21:52:37 +08:00
hadoop-hdfs-project HDFS-16108. Fix incorrect log placeholders used in JournalNodeSyncer (#3169) 2021-07-05 13:42:51 +09:00
hadoop-mapreduce-project YARN-10824. Title not set for JHS and NM webpages. Contributed by Bilwa S T. 2021-06-25 20:36:41 +00:00
hadoop-maven-plugins HADOOP-17777. Update clover-maven-plugin version from 3.3.0 to 4.4.1 (#3152) 2021-06-30 09:35:36 +08:00
hadoop-minicluster Preparing for 3.3.2 development 2021-05-19 21:52:37 +08:00
hadoop-project HADOOP-17769. Upgrade JUnit to 4.13.2. fixes TestBlockRecovery (#3130). Contributed by Ahmed Hussein. (#3138) 2021-06-25 22:48:56 +05:30
hadoop-project-dist Preparing for 3.3.2 development 2021-05-19 21:52:37 +08:00
hadoop-tools HADOOP-17250 Lot of short reads can be merged with readahead. (#3110) 2021-07-05 11:23:32 +01:00
hadoop-yarn-project YARN-10834. Intra-queue preemption: apps that don't use defined custom resource won't be preempted. Contributed by Eric Payne. 2021-06-28 14:55:26 +00:00
licenses HADOOP-17666. Update LICENSE for 3.3.1 (#3011) 2021-05-21 18:15:48 -07:00
licenses-binary HADOOP-17666. Update LICENSE for 3.3.1 (#3011) 2021-05-21 18:15:48 -07:00
.gitattributes HADOOP-13598. Add eol=lf for unix format files in .gitattributes. Contributed by Yiqun Lin. 2016-09-14 11:14:31 +09:00
.gitignore YARN-10407. Add phantomjsdriver.log to gitignore. (#2244) 2021-02-17 10:28:17 +09:00
BUILDING.txt HADOOP-17777. Update clover-maven-plugin version from 3.3.0 to 4.4.1 (#3152) 2021-06-30 09:35:36 +08:00
LICENSE-binary HADOOP-17769. Upgrade JUnit to 4.13.2. fixes TestBlockRecovery (#3130). Contributed by Ahmed Hussein. (#3138) 2021-06-25 22:48:56 +05:30
LICENSE-binary-yarn-applications-catalog-webapp HADOOP-17666. Update LICENSE for 3.3.1 (#3011) 2021-05-21 18:15:48 -07:00
LICENSE-binary-yarn-ui HADOOP-17666. Update LICENSE for 3.3.1 (#3011) 2021-05-21 18:15:48 -07:00
LICENSE.txt HADOOP-17666. Update LICENSE for 3.3.1 (#3011) 2021-05-21 18:15:48 -07:00
NOTICE-binary HADOOP-17666. Update LICENSE for 3.3.1 (#3011) 2021-05-21 18:15:48 -07:00
NOTICE.txt HADOOP-15958. Revisiting LICENSE and NOTICE files. 2019-08-27 13:47:12 +09:00
pom.xml HADOOP-17777. Update clover-maven-plugin version from 3.3.0 to 4.4.1 (#3152) 2021-06-30 09:35:36 +08:00
README.txt HADOOP-15958. Revisiting LICENSE and NOTICE files. 2019-08-27 13:47:12 +09:00
start-build-env.sh HADOOP-17298. Backslash in username causes build failure in the environment started by start-build-env.sh. (#2367) 2020-10-20 10:11:18 +09:00

README.txt 

For the latest information about Hadoop, please visit our website at:

   http://hadoop.apache.org/

and our wiki, at:

   https://cwiki.apache.org/confluence/display/HADOOP/