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From "Lei (Eddy) Xu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-11659) TestDataNodeHotSwapVolumes.testRemoveVolumeBeingWritten fail due to no
Date Mon, 17 Apr 2017 20:31:41 GMT
Lei (Eddy) Xu created HDFS-11659:
------------------------------------

             Summary: TestDataNodeHotSwapVolumes.testRemoveVolumeBeingWritten fail due to
no 
                 Key: HDFS-11659
                 URL: https://issues.apache.org/jira/browse/HDFS-11659
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: datanode
    Affects Versions: 3.0.0-alpha2, 2.7.3
            Reporter: Lei (Eddy) Xu
            Assignee: Lei (Eddy) Xu


The test fails after the following error messages:

{code}
java.io.IOException: Failed to replace a bad datanode on the existing pipeline due to no more
good datanodes being available to try. (Nodes: current=[DatanodeInfoWithStorage[127.0.0.1:57377,DS-b4ec61fc-657c-4e2a-9dc3-8d93b7769a2b,DISK],
DatanodeInfoWithStorage[127.0.0.1:47448,DS-18bca8d7-048d-4d7f-9594-d2df16096a3d,DISK]], original=[DatanodeInfoWithStorage[127.0.0.1:57377,DS-b4ec61fc-657c-4e2a-9dc3-8d93b7769a2b,DISK],
DatanodeInfoWithStorage[127.0.0.1:47448,DS-18bca8d7-048d-4d7f-9594-d2df16096a3d,DISK]]). The
current failed datanode replacement policy is DEFAULT, and a client may configure this via
'dfs.client.block.write.replace-datanode-on-failure.policy' in its configuration.
	at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.findNewDatanode(DFSOutputStream.java:1280)
	at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.addDatanode2ExistingPipeline(DFSOutputStream.java:1354)
	at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.setupPipelineForAppendOrRecovery(DFSOutputStream.java:1512)
	at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.processDatanodeError(DFSOutputStream.java:1236)
	at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:721)
{code}

In such case, the DataNode that has removed can not be used in the pipeline recovery. 



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