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Brandon Li commented on HDFS-5705: ---------------------------------- +1, I will commit it shortly. > TestSecondaryNameNodeUpgrade#testChangeNsIDFails may fail due to > ConcurrentModificationException > ------------------------------------------------------------------------------------------------ > > Key: HDFS-5705 > URL: https://issues.apache.org/jira/browse/HDFS-5705 > Project: Hadoop HDFS > Issue Type: Bug > Reporter: Ted Yu > Assignee: Ted Yu > Attachments: hdfs-5705.html, hdfs-5705.txt > > > From > https://builds.apache.org/job/Hadoop-Hdfs-trunk/1626/testReport/org.apache.hadoop.hdfs.server.namenode/TestSecondaryNameNodeUpgrade/testChangeNsIDFails/ > : > {code} > java.util.ConcurrentModificationException: null > at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793) > at java.util.HashMap$EntryIterator.next(HashMap.java:834) > at java.util.HashMap$EntryIterator.next(HashMap.java:832) > at > org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsVolumeImpl.shutdown(FsVolumeImpl.java:251) > at > org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsVolumeList.shutdown(FsVolumeList.java:218) > at > org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.shutdown(FsDatasetImpl.java:1414) > at > org.apache.hadoop.hdfs.server.datanode.DataNode.shutdown(DataNode.java:1309) > at > org.apache.hadoop.hdfs.MiniDFSCluster.shutdownDataNodes(MiniDFSCluster.java:1464) > at > org.apache.hadoop.hdfs.MiniDFSCluster.shutdown(MiniDFSCluster.java:1439) > at > org.apache.hadoop.hdfs.MiniDFSCluster.shutdown(MiniDFSCluster.java:1423) > at > org.apache.hadoop.hdfs.server.namenode.TestSecondaryNameNodeUpgrade.doIt(TestSecondaryNameNodeUpgrade.java:97) > at > org.apache.hadoop.hdfs.server.namenode.TestSecondaryNameNodeUpgrade.testChangeNsIDFails(TestSecondaryNameNodeUpgrade.java:116) > {code} > The above happens when shutdown() is called in parallel to addBlockPool() or > shutdownBlockPool(). -- This message was sent by Atlassian JIRA (v6.1.5#6160)