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From "Jon Hermes (JIRA)" <>
Subject [jira] Commented: (CASSANDRA-1811) Cleanup smallest CFs first
Date Fri, 03 Dec 2010 22:42:12 GMT


Jon Hermes commented on CASSANDRA-1811:

bq. An alternative would be to extend forceclean in jmx to allow you to specify both the Keyspace
and a CF, so that you could manually do specific CFs.
This is resolved in CASSANDRA-1812, but there's value in both.

> Cleanup smallest CFs first
> --------------------------
>                 Key: CASSANDRA-1811
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Paul Querna
>            Assignee: Jon Hermes
>            Priority: Minor
>             Fix For: 0.6.9
> When running a cleanup, it would be an advantage to anti-compact the smallest SSTables
first, so that free disk space is gradually increased, so that larger sstables later on are
more likely to successfully anti-compact.
> In 0.6, currently Table.forceCleanup() just iterates the list of CFs in whatever order
they come from tableMetadata.getColumnFamilies, which is just a keySet().
> The code should be changed to sort the CFs, smallest first. 

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