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Posted to commits@cassandra.apache.org by "Benjamin Lerer (Jira)" <ji...@apache.org> on 2020/06/09 12:22:00 UTC

[jira] [Updated] (CASSANDRA-15812) Submitting Validation requests can block ANTI_ENTROPY stage

     [ https://issues.apache.org/jira/browse/CASSANDRA-15812?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Benjamin Lerer updated CASSANDRA-15812:
---------------------------------------
    Status: Ready to Commit  (was: Review In Progress)

> Submitting Validation requests can block ANTI_ENTROPY stage 
> ------------------------------------------------------------
>
>                 Key: CASSANDRA-15812
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15812
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Consistency/Repair
>            Reporter: Sam Tunnicliffe
>            Assignee: Sam Tunnicliffe
>            Priority: Normal
>             Fix For: 4.0-alpha
>
>
>  RepairMessages are handled on Stage.ANTI_ENTROPY, which has a thread pool with core/max capacity of one, ie. we can only process one message at a time. 
>  
> Scheduling validation compactions may however block the stage completely, by blocking on CompactionManager's ValidationExecutor while submitting a new validation compaction, in cases where there are already more validations running than can be executed in parallel.



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