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https://issues.apache.org/jira/browse/HDFS-6315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14029252#comment-14029252
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Hudson commented on HDFS-6315:
------------------------------
FAILURE: Integrated in Hadoop-Mapreduce-trunk #1799 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1799/])
HDFS-6315. Decouple recording edit logs from FSDirectory. Contributed by Haohui
Mai. (wheat9:
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1601960)
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestCommitBlockSynchronization.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestFsLimits.java
> Decouple recording edit logs from FSDirectory
> ---------------------------------------------
>
> Key: HDFS-6315
> URL: https://issues.apache.org/jira/browse/HDFS-6315
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Haohui Mai
> Assignee: Haohui Mai
> Fix For: 2.5.0
>
> Attachments: HDFS-6315.000.patch, HDFS-6315.001.patch,
> HDFS-6315.002.patch, HDFS-6315.003.patch, HDFS-6315.004.patch,
> HDFS-6315.005.patch
>
>
> Currently both FSNamesystem and FSDirectory record edit logs. This design
> requires both FSNamesystem and FSDirectory to be tightly coupled together to
> implement a durable namespace.
> This jira proposes to separate the responsibility of implementing the
> namespace and providing durability with edit logs. Specifically, FSDirectory
> implements the namespace (which should have no edit log operations), and
> FSNamesystem implement durability by recording the edit logs.
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