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Posted to commits@cassandra.apache.org by "Jeremy Hanna (JIRA)" <ji...@apache.org> on 2015/05/29 23:15:17 UTC

[jira] [Commented] (CASSANDRA-9517) Switch to DTCS for hint storage

    [ https://issues.apache.org/jira/browse/CASSANDRA-9517?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14565425#comment-14565425 ] 

Jeremy Hanna commented on CASSANDRA-9517:
-----------------------------------------

Hints going to flat files as in CASSANDRA-6230 will be very helpful but that won't be included until at least 3.0.  We could see substantial benefit from this in the meantime.

> Switch to DTCS for hint storage
> -------------------------------
>
>                 Key: CASSANDRA-9517
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9517
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Jeremy Hanna
>             Fix For: 2.1.6
>
>
> The DateTieredCompactionStrategy is a good choice for HintedHandoff so that we reduce the compaction load we incur when users build up hints.  [~atobey@datastax.com] and others have tried the following patch in various setups and have seen significantly less load from hint compaction.
> https://gist.github.com/tobert/c069af27e3f8840d137d
> Setting the time window to 10 minutes has shown additional improvement.
> [~krummas] do you have any feedback about this idea and/or settings?



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