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https://issues.apache.org/jira/browse/HDFS-723?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12769052#action_12769052
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Hadoop QA commented on HDFS-723:
--------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12422869/deadlock.patch
against trunk revision 828900.
+1 @author. The patch does not contain any @author tags.
-1 tests included. The patch doesn't appear to include any new or modified
tests.
Please justify why no new tests are needed for this
patch.
Also please list what manual steps were performed to
verify this patch.
+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 warnings.
+1 release audit. The applied patch does not increase the total number of
release audit warnings.
-1 core tests. The patch failed core unit tests.
+1 contrib tests. The patch passed contrib unit tests.
Test results:
http://hudson.zones.apache.org/hudson/job/Hdfs-Patch-h2.grid.sp2.yahoo.net/53/testReport/
Findbugs warnings:
http://hudson.zones.apache.org/hudson/job/Hdfs-Patch-h2.grid.sp2.yahoo.net/53/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results:
http://hudson.zones.apache.org/hudson/job/Hdfs-Patch-h2.grid.sp2.yahoo.net/53/artifact/trunk/build/test/checkstyle-errors.html
Console output:
http://hudson.zones.apache.org/hudson/job/Hdfs-Patch-h2.grid.sp2.yahoo.net/53/console
This message is automatically generated.
> Deadlock in DFSClient#DFSOutputStream
> -------------------------------------
>
> Key: HDFS-723
> URL: https://issues.apache.org/jira/browse/HDFS-723
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Hairong Kuang
> Assignee: Hairong Kuang
> Priority: Blocker
> Fix For: 0.21.0
>
> Attachments: deadlock.patch
>
>
> WhiIe was running some append-related tests, I hit this deadlock:
> {noformat}
> Found one Java-level deadlock:
> =============================
> "Thread-3":
> waiting to lock monitor 0x000000012ee044f0 (object 0x0000000107a0ded0, a
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream),
> which is held by "main"
> "main":
> waiting to lock monitor 0x000000012eeb71a8 (object 0x00000001082b0748, a
> org.apache.hadoop.hdfs.DFSClient$LeaseChecker),
> which is held by "Thread-3"
> Java stack information for the threads listed above:
> ===================================================
> "Thread-3":
> at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.close(DFSClient.java:3582)
> - waiting to lock <0x0000000107a0ded0> (a
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream)
> at
> org.apache.hadoop.hdfs.DFSClient$LeaseChecker.close(DFSClient.java:1175)
> - locked <0x00000001082b0748> (a
> org.apache.hadoop.hdfs.DFSClient$LeaseChecker)
> at org.apache.hadoop.hdfs.DFSClient.close(DFSClient.java:306)
> - locked <0x000000010824d640> (a org.apache.hadoop.hdfs.DFSClient)
> - waiting to lock <0x0000000107a0ded0> (a
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream)
> at
> org.apache.hadoop.hdfs.DFSClient$LeaseChecker.close(DFSClient.java:1175)
> - locked <0x00000001082b0748> (a
> org.apache.hadoop.hdfs.DFSClient$LeaseChecker)
> at org.apache.hadoop.hdfs.DFSClient.close(DFSClient.java:306)
> - locked <0x000000010824d640> (a org.apache.hadoop.hdfs.DFSClient)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem.close(DistributedFileSystem.java:325)
> at
> org.apache.hadoop.fs.FileSystem$Cache.closeAll(FileSystem.java:1835)
> - locked <0x0000000107a77ec8> (a
> org.apache.hadoop.fs.FileSystem$Cache)
> at
> org.apache.hadoop.fs.FileSystem$Cache$ClientFinalizer.run(FileSystem.java:1851)
> - locked <0x00000001079daa00> (a
> org.apache.hadoop.fs.FileSystem$Cache$ClientFinalizer)
> "main":
> at
> org.apache.hadoop.hdfs.DFSClient$LeaseChecker.remove(DFSClient.java:1151)
> - waiting to lock <0x00000001082b0748> (a
> org.apache.hadoop.hdfs.DFSClient$LeaseChecker)
> at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.close(DFSClient.java:3609)
> - locked <0x0000000107a0ded0> (a
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream)
> at
> org.apache.hadoop.fs.FSDataOutputStream$PositionCache.close(FSDataOutputStream.java:61)
> at
> org.apache.hadoop.fs.FSDataOutputStream.close(FSDataOutputStream.java:86)
> at
> org.apache.hadoop.hdfs.TestFileAppend4.testAppend(TestFileAppend4.java:99)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at junit.framework.TestCase.runTest(TestCase.java:168)
> at junit.framework.TestCase.runBare(TestCase.java:134)
> at junit.framework.TestResult$1.protect(TestResult.java:110)
> at junit.framework.TestResult.runProtected(TestResult.java:128)
> at junit.framework.TestResult.run(TestResult.java:113)
> at junit.framework.TestCase.run(TestCase.java:124)
> at junit.framework.TestSuite.runTest(TestSuite.java:232)
> at junit.framework.TestSuite.run(TestSuite.java:227)
> at junit.extensions.TestDecorator.basicRun(TestDecorator.java:24)
> at junit.extensions.TestSetup$1.protect(TestSetup.java:23)
> at junit.framework.TestResult.runProtected(TestResult.java:128)
> at junit.extensions.TestSetup.run(TestSetup.java:27)
> at
> org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.run(JUnitTestRunner.java:420)
> at
> org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.launch(JUnitTestRunner.java:911)
> at
> org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(JUnitTestRunner.java:768)
> {noformat}
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