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  1. Hadoop HDFS
  2. HDFS-11659

TestDataNodeHotSwapVolumes.testRemoveVolumeBeingWritten fail due to no DataNode available for pipeline recovery.

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.7.3, 3.0.0-alpha2
    • Fix Version/s: 2.9.0, 3.0.0-alpha4
    • Component/s: datanode
    • Labels:
      None

      Description

      The test fails after the following error messages:

      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)
      

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

        Attachments

        1. HDFS-11659.000.patch
          3 kB
          Lei (Eddy) Xu

          Activity

            People

            • Assignee:
              eddyxu Lei (Eddy) Xu
              Reporter:
              eddyxu Lei (Eddy) Xu
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              Dates

              • Created:
                Updated:
                Resolved: