[jira] [Updated] (CASSANDRA-4790) Allow property override of available processors value

["Jonathan Ellis (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-4790?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Ellis updated CASSANDRA-4790:
--------------------------------------

             Priority: Minor  (was: Major)
    Affects Version/s:     (was: 1.1.4)
        Fix Version/s: 1.1.8
           Issue Type: New Feature  (was: Improvement)

Adding a -D option to cassandra-env.sh would be cleanest.
                
> Allow property override of available processors value
> -----------------------------------------------------
>
>                 Key: CASSANDRA-4790
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4790
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Ahmed Bashir
>            Priority: Minor
>             Fix For: 1.1.8
>
>
> Currently, many critical thread pools are sized according to the number of available processors i.e. Runtime.getRuntime.availableProcessors() (See StageManager.java)
> In a multi-instance deployment, multiple Cassandra instances will independently assume that all processors are available to it; there should be a mechanism to specify a smaller set of processors (and perhaps have affinity).

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