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From "Aaron T. Myers (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-7635) RetryInvocationHandler should release underlying resources on close
Date Wed, 14 Sep 2011 07:08:08 GMT
RetryInvocationHandler should release underlying resources on close
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                 Key: HADOOP-7635
                 URL: https://issues.apache.org/jira/browse/HADOOP-7635
             Project: Hadoop Common
          Issue Type: Bug
          Components: ipc
    Affects Versions: 0.24.0
            Reporter: Aaron T. Myers
            Assignee: Aaron T. Myers
             Fix For: 0.24.0


It is often the case that RPC invocation handlers (e.g. {{o.a.h.ipc.WritableRpcEngine.Invoker}})
are wrapped in a {{RetryInvocationHandler}} instance to handle RPC retry logic. Since {{RetryInvocationHandler}}
doesn't have any resources of its own, and is incapable of releasing the resources of the
wrapped {{InvocationHandler}}, users of {{RetryInvocationHandler}} must keep around a reference
to the underlying {{InvocationHandler}} only for the purpose of closing. For an example of
this, see {{o.a.h.hdfs.DFSClient}}, in particular the member variables {{namenode}} and {{rpcNamenode}}.

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