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From "Lukas Majercak (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-15683) Client.setupConnection should not block Client.stop() calls
Date Thu, 16 Aug 2018 23:57:00 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-15683?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Lukas Majercak updated HADOOP-15683:
------------------------------------
    Description: 
If the IPC Client is still setting up connections when Client.stop() is called, the stop()
call will not succeed until setupConnection finishes (successfully or with failure). 

This can cause very long delay (maxFailures * timeout can be more than 10minutes depending
on configuration) in stopping the client. 
Client.stop() is for example used in NN switch from Standby to Active, and can therefore have
very bad consequences and cause downtime.

> Client.setupConnection should not block Client.stop() calls
> -----------------------------------------------------------
>
>                 Key: HADOOP-15683
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15683
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: common, ipc
>            Reporter: Lukas Majercak
>            Assignee: Lukas Majercak
>            Priority: Critical
>         Attachments: HADOOP-15683.000.patch
>
>
> If the IPC Client is still setting up connections when Client.stop() is called, the stop()
call will not succeed until setupConnection finishes (successfully or with failure). 
> This can cause very long delay (maxFailures * timeout can be more than 10minutes depending
on configuration) in stopping the client. 
> Client.stop() is for example used in NN switch from Standby to Active, and can therefore
have very bad consequences and cause downtime.



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