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Posted to hdfs-dev@hadoop.apache.org by "Hairong Kuang (JIRA)" <ji...@apache.org> on 2009/10/21 22:50:59 UTC
[jira] Created: (HDFS-723) Deadlock in DFSClient#DFSOutputStream
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
WhiIe was running some append-related tests, I hit this deadlock:
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)
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