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https://issues.apache.org/jira/browse/HADOOP-8202?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13238125#comment-13238125
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Todd Lipcon commented on HADOOP-8202:
-------------------------------------
Instead of adding the instanceof check anywhere we use an object that might be
a mock, can we instead change the protocol interfaces themselves to "extend
Closeable"? That will make sure that any proxy implementations themselves take
care of extending it, and also will solve the mock issue (since the mock itself
will then also extend Closeable).
> stopproxy() is not closing the proxies correctly
> ------------------------------------------------
>
> Key: HADOOP-8202
> URL: https://issues.apache.org/jira/browse/HADOOP-8202
> Project: Hadoop Common
> Issue Type: Bug
> Components: ipc
> Affects Versions: 0.24.0
> Reporter: Hari Mankude
> Assignee: Hari Mankude
> Priority: Minor
> Attachments: HADOOP-8202-1.patch, HADOOP-8202-2.patch,
> HADOOP-8202-3.patch, HADOOP-8202.patch, HADOOP-8202.patch
>
>
> I was running testbackupnode and noticed that NNprotocol proxy was not being
> closed. Talked with Suresh and he observed that most of the protocols do not
> implement ProtocolTranslator and hence the logic in stopproxy() does not
> work. Instead, since all of them are closeable, Suresh suggested that
> closeable property should be used at close.
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