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https://issues.apache.org/jira/browse/HADOOP-7045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12933667#action_12933667
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Hadoop QA commented on HADOOP-7045:
-----------------------------------
+1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12459966/hadoop-7045-1.patch
against trunk revision 1036694.
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 5 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 passed core unit tests.
+1 contrib tests. The patch passed contrib unit tests.
+1 system test framework. The patch passed system test framework compile.
Test results:
https://hudson.apache.org/hudson/job/PreCommit-HADOOP-Build/113//testReport/
Findbugs warnings:
https://hudson.apache.org/hudson/job/PreCommit-HADOOP-Build/113//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output:
https://hudson.apache.org/hudson/job/PreCommit-HADOOP-Build/113//console
This message is automatically generated.
> TestDU fails on systems with local file systems with extended attributes
> ------------------------------------------------------------------------
>
> Key: HADOOP-7045
> URL: https://issues.apache.org/jira/browse/HADOOP-7045
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs
> Reporter: Eli Collins
> Assignee: Eli Collins
> Priority: Minor
> Fix For: 0.23.0
>
> Attachments: hadoop-7045-1.patch
>
>
> The test reports that the file takes an extra 4k on disk:
> {noformat}
> Testcase: testDU took 5.74 sec
> FAILED
> expected:<32768> but was:<36864>
> junit.framework.AssertionFailedError: expected:<32768> but was:<36864>
> at org.apache.hadoop.fs.TestDU.testDU(TestDU.java:79)
> {noformat}
> This is because du reports 32k for the file and 4k because the file system it
> lives on uses extended attributes.
> {noformat}
> common-branch-0.20 $ dd if=/dev/zero of=data bs=4096 count=8
> 8+0 records in
> 8+0 records out
> 32768 bytes (33 kB) copied, 9.6e-05 seconds, 341 MB/s
> common-branch-0.20 $ du data
> 36 data
> common-branch-0.20 $ du --apparent-size data
> 32 data
> {noformat}
> We should modify the test to allow for some extra on-disk slack. The on-disk
> usage could also be smaller if the file data is all zeros or compression is
> enabled. The test currently handles the former by writing random data, we're
> punting on the latter.
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