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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-10219) ipc.Client.setupIOstreams() needs to check for ClientCache.stopClient requested shutdowns
Date Tue, 04 Sep 2018 16:13:01 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-10219?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16603251#comment-16603251

Hudson commented on HADOOP-10219:

SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #14871 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/14871/])
HADOOP-10219. ipc.Client.setupIOstreams() needs to check for (stevel: rev 9e96ac666d783376a8cdea9c3cc84098c5bdcb56)
* (edit) hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ipc/TestIPC.java
* (edit) hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Client.java

> ipc.Client.setupIOstreams() needs to check for ClientCache.stopClient requested shutdowns

> ------------------------------------------------------------------------------------------
>                 Key: HADOOP-10219
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10219
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: ipc
>    Affects Versions: 2.2.0, 2.6.0
>            Reporter: Steve Loughran
>            Assignee: Kihwal Lee
>            Priority: Major
>             Fix For: 3.2.0, 3.1.2
>         Attachments: HADOOP-10219.patch, HADOOP-10219.v1.patch, HADOOP-10219.v2.patch,
HADOOP-10219.v3.patch, HADOOP-10219.v4.patch
> When {{ClientCache.stopClient()}} is called to stop the IPC client, if the client
>  is blocked spinning due to a connectivity problem, it does not exit until the policy
has timed out -so the stopClient() operation can hang for an extended period of time.
> This can surface in the shutdown hook of FileSystem.cache.closeAll()
> Also, Client.stop() is for used in NN switch from Standby to Active, and can therefore
have very bad consequences and cause downtime.

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