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https://issues.apache.org/jira/browse/ZOOKEEPER-3110?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Fangmin Lv updated ZOOKEEPER-3110:
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Description:
On leader every expired global session will add 3 lines of logs, which is
pretty heavy and if the log file is more than a few GB, the log for the
closeSession in PrepRequestProcessor will slow down the whole ensemble's
throughput.
>From some use case, we found the prep request processor will be a bottleneck
>when there are constantly high number of expired session or closing session
>explicitly.
This JIra is going to remove one of the useless log when prepare close session
txns, which should give us higher throughput during processing large number of
expire sessions.
was:
On leader every expired global session will add 3 lines of logs, which is
pretty heavy and if the log file is more than a few GB, the log for the
closeSession in PrepRequestProcessor will slow down the whole ensemble's
throughput.
>From some use case, we found the prep request processor will be a bottleneck
>when there are constantly high number of expired session or closing session
>explicitly.
This patch is going to remove one of the useless log when prepare close session
txns, which
should give us higher throughput during processing large number of expire
sessions.
> Improve the closeSession throughput in PrepRequestProcessor
> -----------------------------------------------------------
>
> Key: ZOOKEEPER-3110
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3110
> Project: ZooKeeper
> Issue Type: Improvement
> Components: quorum
> Reporter: Fangmin Lv
> Assignee: Fangmin Lv
> Priority: Minor
> Fix For: 3.6.0
>
>
> On leader every expired global session will add 3 lines of logs, which is
> pretty heavy and if the log file is more than a few GB, the log for the
> closeSession in PrepRequestProcessor will slow down the whole ensemble's
> throughput.
> From some use case, we found the prep request processor will be a bottleneck
> when there are constantly high number of expired session or closing session
> explicitly.
> This JIra is going to remove one of the useless log when prepare close
> session txns, which should give us higher throughput during processing large
> number of expire sessions.
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