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Date: Fri, 22 Jul 2016 21:48:20 +0000 (UTC)
From: "Guocui Mi (JIRA)" <jira@apache.org>
To: hdfs-dev@hadoop.apache.org
Message-ID: <JIRA.12940644.1455915391000.112031.1469224100656@Atlassian.JIRA>
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References: <JIRA.12940644.1455915391000@Atlassian.JIRA> <JIRA.12940644.1455915391539@arcas>
Subject: [jira] [Resolved] (HDFS-9836) RequestHedgingInvocationHandler can't
 be cast to org.apache.hadoop.ipc.RpcInvocationHandler
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archived-at: Fri, 22 Jul 2016 21:48:22 -0000


     [ https://issues.apache.org/jira/browse/HDFS-9836?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Guocui Mi resolved HDFS-9836.
-----------------------------
    Resolution: Won't Fix

> RequestHedgingInvocationHandler can't be cast to org.apache.hadoop.ipc.RpcInvocationHandler
> -------------------------------------------------------------------------------------------
>
>                 Key: HDFS-9836
>                 URL: https://issues.apache.org/jira/browse/HDFS-9836
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: ha
>    Affects Versions: 2.8.0
>            Reporter: Guocui Mi
>            Assignee: Guocui Mi
>            Priority: Trivial
>         Attachments: HDFS-9836-000.patch, HDFS-9836-001.patch
>
>
> 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)



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