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https://issues.apache.org/jira/browse/HADOOP-11970?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14552552#comment-14552552
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Hudson commented on HADOOP-11970:
---------------------------------
SUCCESS: Integrated in Hadoop-Mapreduce-trunk-Java8 #201 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Java8/201/])
HADOOP-11970. Replace uses of ThreadLocal<Random> with JDK7 ThreadLocalRandom
(Sean Busbey via Colin P. McCabe) (cmccabe: rev
470c87dbc6c24dd3b370f1ad9e7ab1f6dabd2080)
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPServiceActor.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/metrics/DataNodeMetrics.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NamenodeFsck.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestHAAppend.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestAppendSnapshotTruncate.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DirectoryScanner.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestReplicationPolicy.java
*
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/retry/RetryPolicies.java
*
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/localizer/sharedcache/SharedCacheUploader.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSUtil.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSClient.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NNStorage.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeManager.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/Host2NodesMap.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestFileTruncate.java
* hadoop-common-project/hadoop-common/CHANGES.txt
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/util/TestByteArrayManager.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestDNFencing.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestRollingUpgrade.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSInputStream.java
> Replace uses of ThreadLocal<Random> with JDK7 ThreadLocalRandom
> ---------------------------------------------------------------
>
> Key: HADOOP-11970
> URL: https://issues.apache.org/jira/browse/HADOOP-11970
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Sean Busbey
> Assignee: Sean Busbey
> Fix For: 2.8.0
>
> Attachments: HADOOP-11970.1.patch, HADOOP-11970.2.patch,
> HADOOP-11970.3.patch
>
>
> ThreadLocalRandom should be used when available in place of
> ThreadLocal<Random>. For JDK7 the difference is minimal, but JDK8 starts
> including optimizations for ThreadLocalRandom.
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