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  1. Hadoop HDFS
  2. HDFS-9836

RequestHedgingInvocationHandler can't be cast to org.apache.hadoop.ipc.RpcInvocationHandler

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Trivial
    • Resolution: Won't Fix
    • Affects Version/s: 2.8.0
    • Fix Version/s: None
    • Component/s: ha
    • Labels:
      None

      Description

      RequestHedgingInvocationHandler cannot be cast to org.apache.hadoop.ipc.RpcInvocationHandler

      Reproduce steps:
      1: Set client failover provider as RequestHedgingProxyProvider.
      <property>
      <name>dfs.client.failover.proxy.provider.[nameservice]</name>
      <value>org.apache.hadoop.hdfs.server.namenode.ha.RequestHedgingProxyProvider</value>
      </property>

      2: run hdfs fsck / will get following exceptions.
      Exception in thread "main" java.lang.ClassCastException: org.apache.hadoop.hdfs.server.namenode.ha.RequestHedgingProxyProvider$RequestHedgingInvocationHandler cannot be cast to org.apache.hadoop.ipc.RpcInvocationHandler
      at org.apache.hadoop.ipc.RPC.getConnectionIdForProxy(RPC.java:613)
      at org.apache.hadoop.io.retry.RetryInvocationHandler.getConnectionId(RetryInvocationHandler.java:281)
      at org.apache.hadoop.ipc.RPC.getConnectionIdForProxy(RPC.java:615)
      at org.apache.hadoop.ipc.RPC.getServerAddress(RPC.java:598)
      at org.apache.hadoop.hdfs.HAUtil.getAddressOfActive(HAUtil.java:380)
      at org.apache.hadoop.hdfs.tools.DFSck.getCurrentNamenodeAddress(DFSck.java:248)
      at org.apache.hadoop.hdfs.tools.DFSck.doWork(DFSck.java:255)
      at org.apache.hadoop.hdfs.tools.DFSck.access$000(DFSck.java:72)
      at org.apache.hadoop.hdfs.tools.DFSck$1.run(DFSck.java:148)
      at org.apache.hadoop.hdfs.tools.DFSck$1.run(DFSck.java:145)
      at java.security.AccessController.doPrivileged(Native Method)
      at javax.security.auth.Subject.doAs(Subject.java:415)
      at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1671)
      at org.apache.hadoop.hdfs.tools.DFSck.run(DFSck.java:144)
      at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
      at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84)
      at org.apache.hadoop.hdfs.tools.DFSck.main(DFSck.java:360)

        Attachments

        1. HDFS-9836-000.patch
          2 kB
          Guocui Mi
        2. HDFS-9836-001.patch
          4 kB
          Guocui Mi

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              • Assignee:
                Guocui Guocui Mi
                Reporter:
                Guocui Guocui Mi
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                • Created:
                  Updated:
                  Resolved: