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Posted to common-issues@hadoop.apache.org by "Daryn Sharp (JIRA)" <ji...@apache.org> on 2017/02/03 18:57:52 UTC
[jira] [Updated] (HADOOP-14034) Allow ipc layer exceptions to
selectively close connections
[ https://issues.apache.org/jira/browse/HADOOP-14034?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Daryn Sharp updated HADOOP-14034:
---------------------------------
Status: Patch Available (was: Open)
> Allow ipc layer exceptions to selectively close connections
> -----------------------------------------------------------
>
> Key: HADOOP-14034
> URL: https://issues.apache.org/jira/browse/HADOOP-14034
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: ipc
> Affects Versions: 2.7.0
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Attachments: HADOOP-14034-branch-2.patch, HADOOP-14034-trunk.patch
>
>
> IPC layer exceptions generated in the readers are translated into fatal errors - resulting in connection closure. Ex. RetriableExceptions from call queue pushback.
> Always closing the connection degrades performance for all clients since a disconnected client will immediately reconnect on retry. Readers become overwhelmed servicing new connections and re-authentications from bad clients instead of servicing calls from good clients. The call queues run dry.
> Exceptions originating in the readers should be able to indicate if the exception is an error or fatal so connections can remain open.
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