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https://issues.apache.org/jira/browse/CASSANDRA-11324?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15312686#comment-15312686
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Thom Valley commented on CASSANDRA-11324:
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I disagree.
SSTABLESCRUB is run on a keyspace or keyspace/table.
A single table can have hundreds of SSTABLEs, which _could_ be run in parallel.
Expecting a user to write a script to efficiently do basic maintenance is a
serious usability problem.
> Make SSTABLESCRUB and related jobs multi-threaded / parallelize somehow
> ------------------------------------------------------------------------
>
> Key: CASSANDRA-11324
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11324
> Project: Cassandra
> Issue Type: Improvement
> Components: Tools
> Reporter: Thom Valley
> Priority: Minor
>
> SSTABLE scrub right now appears to be single threaded in offline mode (unsure
> about online). When scrubbing a node, especially a well provisioned one, the
> node sits mostly idle for potentially hours while scrubbing.
> Making better use of available resources through parallelization /
> multi-threading of the scrub process seems like a good idea.
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