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From "Edward Capriolo (JIRA)" <j...@apache.org>
Subject [jira] Updated: (CASSANDRA-1222) Implement adaptive backoff for compaction/repairs
Date Wed, 23 Jun 2010 15:29:50 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-1222?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Edward Capriolo updated CASSANDRA-1222:
---------------------------------------

    Attachment: CompactionManager.java

This is just a rough draft of the back off idea.

> Implement adaptive backoff for compaction/repairs
> -------------------------------------------------
>
>                 Key: CASSANDRA-1222
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1222
>             Project: Cassandra
>          Issue Type: New Feature
>            Reporter: Edward Capriolo
>         Attachments: CompactionManager.java
>
>
> When nodes are in repair/streaming/compact they tend use all available IO and hurt the
performance of read requests. In our use case we do not compact very long and we always want
reads to have a priority. Our suggestion throttle compaction based on the row-read-stage.pending
count. 

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