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Posted to commits@cassandra.apache.org by "Jon Meredith (Jira)" <ji...@apache.org> on 2019/08/26 19:31:00 UTC
[jira] [Comment Edited] (CASSANDRA-15277) Make it possible to
resize concurrent read / write thread pools at runtime
[ https://issues.apache.org/jira/browse/CASSANDRA-15277?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16916085#comment-16916085 ]
Jon Meredith edited comment on CASSANDRA-15277 at 8/26/19 7:30 PM:
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I went ahead and changed SEPExecutor to understand negative permits as resizing and give up their work permits, added support for nodetool to get/set concurrency, tried to clear up confusion with the JMXEnabledThreadPoolExecutor pool size getters/setters and cleaned up the unnecessary JMXConfigurableThreadPoolExecutor as it doesn't add anything to JMXEnabledPoolExecutor any more.
Also, switched the code to be based on CASSANDRA-15227 as there are changes to Stage/StageManager that impact this work and it seemed easier to make the changes after.
was (Author: jmeredithco):
I went ahead and changed SEPExecutor to understand negative permits as resizing and give up their work permits, added support for nodetool to get/set concurrency, tried to clear up confusion with the JMXEnabledThreadPoolExecutor pool size getters/setters and cleaned up the unnecessary JMXConfigurableThreadPoolExecutor as it doesn't add anything to JMXEnabledPoolExecutor any more.
> Make it possible to resize concurrent read / write thread pools at runtime
> --------------------------------------------------------------------------
>
> Key: CASSANDRA-15277
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15277
> Project: Cassandra
> Issue Type: Improvement
> Components: Local/Other
> Reporter: Jon Meredith
> Assignee: Jon Meredith
> Priority: Normal
> Labels: pull-request-available
> Time Spent: 20m
> Remaining Estimate: 0h
>
> To better mitigate cluster overload the executor services for various stages should be configurable at runtime (probably as a JMX hot property).
> Related to CASSANDRA-5044, this would add the capability to resize to multiThreadedLowSignalStage pools based on SEPExecutor.
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