Arpit Agarwal created HDFS-6098: ----------------------------------- Summary: ConcurrentModificationException exception during DataNode shutdown Key: HDFS-6098 URL: https://issues.apache.org/jira/browse/HDFS-6098 Project: Hadoop HDFS Issue Type: Bug Components: datanode Affects Versions: 2.4.0 Reporter: Arpit Agarwal
Exception hit during DN shutdown while running {{TestWebHdfsWithMultipleNameNodes}}: {code} java.util.ConcurrentModificationException: null at java.util.HashMap$HashIterator.nextEntry(HashMap.java:894) at java.util.HashMap$EntryIterator.next(HashMap.java:934) at java.util.HashMap$EntryIterator.next(HashMap.java:932) 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:249) at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.shutdown(FsDatasetImpl.java:1376) at org.apache.hadoop.hdfs.server.datanode.DataNode.shutdown(DataNode.java:1301) at org.apache.hadoop.hdfs.MiniDFSCluster.shutdownDataNodes(MiniDFSCluster.java:1523) at org.apache.hadoop.hdfs.MiniDFSCluster.shutdown(MiniDFSCluster.java:1498) at org.apache.hadoop.hdfs.MiniDFSCluster.shutdown(MiniDFSCluster.java:1482) at org.apache.hadoop.hdfs.web.TestWebHdfsWithMultipleNameNodes.shutdownCluster(TestWebHdfsWithMultipleNameNodes.java:99) {code} -- This message was sent by Atlassian JIRA (v6.2#6252)