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https://issues.apache.org/jira/browse/HDFS-14731?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17042341#comment-17042341
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Hudson commented on HDFS-14731:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #17977 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/17977/])
HDFS-14731. [FGL] Remove redundant locking on NameNode. Contributed by (shv:
rev ecbcb058b8bc0fbc3903acb56814c6d9608bc396)
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirEncryptionZoneOp.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/BackupImage.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestBlocksWithNotEnoughRacks.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/EncryptionZoneManager.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ReencryptionHandler.java
> [FGL] Remove redundant locking on NameNode.
> -------------------------------------------
>
> Key: HDFS-14731
> URL: https://issues.apache.org/jira/browse/HDFS-14731
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Reporter: Konstantin Shvachko
> Assignee: Konstantin Shvachko
> Priority: Major
> Attachments: HDFS-14731.001.patch
>
>
> Currently NameNode has two global locks: FSNamesystemLock and
> FSDirectoryLock. An analysis shows that single FSNamesystemLock is sufficient
> to guarantee consistency of the NameNode state. FSDirectoryLock can be
> removed.
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