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Date: Mon, 10 Dec 2012 15:35:22 +0000 (UTC)
From: "T Jake Luciani (JIRA)" <jira@apache.org>
To: commits@cassandra.apache.org
Message-ID: <JIRA.12622992.1354924684338.12020.1355153722049@arcas>
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Subject: [jira] [Commented] (CASSANDRA-5044) Allow resizing of threadpools
 via JMX
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    [ https://issues.apache.org/jira/browse/CASSANDRA-5044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13528004#comment-13528004 ] 

T Jake Luciani commented on CASSANDRA-5044:
-------------------------------------------

This allows us to resize read/write pools without restarting. 

It also allows us to go from multi-threaded compaction so single threaded without restart.
                
> Allow resizing of threadpools via JMX
> -------------------------------------
>
>                 Key: CASSANDRA-5044
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5044
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Carl Yeksigian
>            Assignee: Carl Yeksigian
>            Priority: Minor
>         Attachments: 5044.txt
>
>
> Currently changing the size of threadpools is done using the config files. If resizing a threadpool, the node needs to be taken offline.
> Adding resizing via JMX allows online tweaking. TPEs allow for moving the number of threads up and down; moving down will take effect after a thread in the pool becomes idle.

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