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https://issues.apache.org/jira/browse/HDFS-2759?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13193686#comment-13193686
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Hadoop QA commented on HDFS-2759:
---------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12511956/HDFS-2759.patch
against trunk revision .
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 3 new or modified tests.
-1 javadoc. The javadoc tool appears to have generated 21 warning messages.
+1 javac. The applied patch does not increase the total number of javac
compiler warnings.
+1 eclipse:eclipse. The patch built with eclipse:eclipse.
-1 findbugs. The patch appears to introduce 1 new Findbugs (version 1.3.9)
warnings.
+1 release audit. The applied patch does not increase the total number of
release audit warnings.
+1 core tests. The patch passed unit tests in .
+1 contrib tests. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-HDFS-Build/1814//testReport/
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HDFS-Build/1814//artifact/trunk/hadoop-hdfs-project/patchprocess/newPatchFindbugsWarningshadoop-hdfs.html
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/1814//console
This message is automatically generated.
> Pre-allocate HDFS edit log files after writing version number
> -------------------------------------------------------------
>
> Key: HDFS-2759
> URL: https://issues.apache.org/jira/browse/HDFS-2759
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: ha, name-node
> Affects Versions: 0.24.0
> Reporter: Aaron T. Myers
> Assignee: Aaron T. Myers
> Attachments: HDFS-2759.patch, HDFS-2759.patch
>
>
> In HDFS-2709 it was discovered that there's a potential race wherein edits
> log files are pre-allocated before the version number is written into the
> header of the file. This can cause the NameNode to read an invalid HDFS
> layout version, and hence fail to read the edit log file. We should write the
> header, then pre-allocate the rest of the file after this point.
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