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https://issues.apache.org/jira/browse/CASSANDRA-11218?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16114491#comment-16114491
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Nate McCall commented on CASSANDRA-11218:
-----------------------------------------

[~tania.en...@quest.com] If you are seeing this consistently, turn on {{TRACE}} 
logging for {{org.apache.cassandra.io.sstable.IndexSummaryRedistribution}}. 
That will provide a lot of information about how much effort is being spent on 
that code path. 

> Prioritize Secondary Index rebuild
> ----------------------------------
>
>                 Key: CASSANDRA-11218
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11218
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Compaction, Secondary Indexes
>            Reporter: sankalp kohli
>            Assignee: Jeff Jirsa
>            Priority: Minor
>
> We have seen that secondary index rebuild get stuck behind other compaction 
> during a bootstrap and other operations. This causes things to not finish. We 
> should prioritize index rebuild via a separate thread pool or using a 
> priority queue.



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