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https://issues.apache.org/jira/browse/TRAFODION-2235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15644903#comment-15644903
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ASF GitHub Bot commented on TRAFODION-2235:
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GitHub user zcorrea opened a pull request:
https://github.com/apache/incubator-trafodion/pull/823
[TRAFODION-2235] Changed EPOLL logic to use expired znode as definiti…
…ve node down.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zcorrea/incubator-trafodion TRAFODION-2235
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-trafodion/pull/823.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #823
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commit e54699f7e5baf12f85a91bacb4973208432b4536
Author: Zalo Correa <[email protected]>
Date: 2016-11-07T16:02:31Z
[TRAFODION-2235] Changed EPOLL logic to use expired znode as definitive
node down.
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> Enhance node failure detection and coordination
> -----------------------------------------------
>
> Key: TRAFODION-2235
> URL: https://issues.apache.org/jira/browse/TRAFODION-2235
> Project: Apache Trafodion
> Issue Type: Bug
> Components: foundation, installer
> Affects Versions: 2.1-incubating
> Reporter: Gonzalo E Correa
> Assignee: Gonzalo E Correa
>
> Certain server and network failures are not detected by the monitor processes
> which cause a safety net failure detection mechanism to trigger in all
> Trafodion nodes. This safety net mechanism is controlled by the environment
> variable SQ_MON_SYNC_TIMEOUT currently set at 15 minutes.
> This JIRA is to enhance the node failure mechanism in the Trafodion
> foundation components, specifically the monitor process, to detect a
> non-responsive node and handle it as a node down condition when a
> configurable timeout event is detected prior to the safety net failure
> mechanism described above.
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