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Posted to common-dev@hadoop.apache.org by "Jonathan Hung (JIRA)" <ji...@apache.org> on 2018/08/31 17:53:00 UTC

[jira] [Created] (HADOOP-15711) Fix branch-2 builds

Jonathan Hung created HADOOP-15711:
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             Summary: Fix branch-2 builds
                 Key: HADOOP-15711
                 URL: https://issues.apache.org/jira/browse/HADOOP-15711
             Project: Hadoop Common
          Issue Type: Task
            Reporter: Jonathan Hung


Branch-2 builds have been disabled for a while: https://builds.apache.org/view/H-L/view/Hadoop/job/hadoop-qbt-branch2-java7-linux-x86/

A test run here causes hdfs tests to hang: https://builds.apache.org/view/H-L/view/Hadoop/job/hadoop-qbt-branch2-java7-linux-x86-jhung/4/

Running hadoop-hdfs tests locally reveal some errors such as:{noformat}[ERROR] testComplexAppend2(org.apache.hadoop.hdfs.TestFileAppend2)  Time elapsed: 0.059 s  <<< ERROR!
java.lang.OutOfMemoryError: unable to create new native thread
        at java.lang.Thread.start0(Native Method)
        at java.lang.Thread.start(Thread.java:714)
        at org.apache.hadoop.hdfs.server.namenode.FSImage.saveFSImageInAllDirs(FSImage.java:1164)
        at org.apache.hadoop.hdfs.server.namenode.FSImage.saveFSImageInAllDirs(FSImage.java:1128)
        at org.apache.hadoop.hdfs.server.namenode.FSImage.format(FSImage.java:174)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:1172)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:403)
        at org.apache.hadoop.hdfs.DFSTestUtil.formatNameNode(DFSTestUtil.java:234)
        at org.apache.hadoop.hdfs.MiniDFSCluster.createNameNodesAndSetConf(MiniDFSCluster.java:1080)
        at org.apache.hadoop.hdfs.MiniDFSCluster.initMiniDFSCluster(MiniDFSCluster.java:883)
        at org.apache.hadoop.hdfs.MiniDFSCluster.<init>(MiniDFSCluster.java:514)
        at org.apache.hadoop.hdfs.MiniDFSCluster$Builder.build(MiniDFSCluster.java:473)
        at org.apache.hadoop.hdfs.TestFileAppend2.testComplexAppend(TestFileAppend2.java:489)
        at org.apache.hadoop.hdfs.TestFileAppend2.testComplexAppend2(TestFileAppend2.java:543)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43){noformat}

I was able to get more tests passing locally by increasing the max user process count on my machine. But the error suggests that there's an issue in the tests themselves.



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