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https://issues.apache.org/jira/browse/HDFS-2021?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13042404#comment-13042404
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Hadoop QA commented on HDFS-2021:
---------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12481127/HDFS-2021-2.patch
against trunk revision 1130262.
+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 did not generate any warning messages.
+1 javac. The applied patch does not increase the total number of javac
compiler warnings.
+1 findbugs. The patch does not introduce any 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 failed these core unit tests:
org.apache.hadoop.hdfs.TestDFSUpgradeFromImage
+1 contrib tests. The patch passed contrib unit tests.
+1 system test framework. The patch passed system test framework compile.
Test results:
https://builds.apache.org/hudson/job/PreCommit-HDFS-Build/675//testReport/
Findbugs warnings:
https://builds.apache.org/hudson/job/PreCommit-HDFS-Build/675//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output:
https://builds.apache.org/hudson/job/PreCommit-HDFS-Build/675//console
This message is automatically generated.
> TestWriteRead failed with inconsistent visible length of a file
> ----------------------------------------------------------------
>
> Key: HDFS-2021
> URL: https://issues.apache.org/jira/browse/HDFS-2021
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: data-node
> Environment: Linux RHEL5
> Reporter: CW Chung
> Assignee: John George
> Attachments: HDFS-2021-2.patch, HDFS-2021.patch
>
>
> The junit test failed when iterates a number of times with larger chunk size
> on Linux. Once a while, the visible number of bytes seen by a reader is
> slightly less than what was supposed to be.
> When run with the following parameter, it failed more often on Linux ( as
> reported by John George) than my Mac:
> private static final int WR_NTIMES = 300;
> private static final int WR_CHUNK_SIZE = 10000;
> Adding more debugging output to the source, this is a sample of the output:
> Caused by: java.io.IOException: readData mismatch in byte read:
> expected=2770000 ; got 2765312
> at
> org.apache.hadoop.hdfs.TestWriteRead.readData(TestWriteRead.java:141)
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