[jira] [Commented] (CASSANDRA-3961) Make index_interval configurable per column family

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

    [ https://issues.apache.org/jira/browse/CASSANDRA-3961?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13507808#comment-13507808 ] 

Jonathan Ellis commented on CASSANDRA-3961:
-------------------------------------------

My mistake.  v6 lgtm; rebased and committed.
                
> Make index_interval configurable per column family
> --------------------------------------------------
>
>                 Key: CASSANDRA-3961
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3961
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>         Environment: Cassandra 1.0.7/unix
>            Reporter: Radim Kolar
>            Assignee: Radim Kolar
>             Fix For: 1.3
>
>         Attachments: cass-interval1.txt, cass-interval2.txt, cass-interval3.txt, cass-interval4.txt, cass-interval5.txt, cass-interval6.txt
>
>
> After various experiments with mixing OLTP a OLAP workload running on single cassandra cluster i discovered that lot of memory is wasted on holding index samples for CF which are rarely accessed or index is not much used for CF access because slices over keys are used. 
> There is per column family setting for configuring bloom filters - bloom_filter_fp_chance. Please add setting index_interval configurable per CF as well. If this setting is not set or it is zero, default from cassandra.yaml will be used.

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