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https://issues.apache.org/jira/browse/HADOOP-7635?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eli Collins updated HADOOP-7635:
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Target Version/s: 0.23.1
Good candidate for merging to branch 23.
> RetryInvocationHandler should release underlying resources on close
> -------------------------------------------------------------------
>
> Key: HADOOP-7635
> URL: https://issues.apache.org/jira/browse/HADOOP-7635
> Project: Hadoop Common
> Issue Type: Improvement
> Components: ipc
> Affects Versions: 0.24.0
> Reporter: Aaron T. Myers
> Assignee: Aaron T. Myers
> Fix For: 0.24.0
>
> Attachments: hadoop-7635.0.txt, hadoop-7635.1.txt
>
>
> 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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