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https://issues.apache.org/jira/browse/CASSANDRA-1581?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12918410#action_12918410
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Chris Goffinet commented on CASSANDRA-1581:
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We used to cleanup millions of rows from our SSTables that we no longer needed.
It saved us hours upon hours of not needing to write directly to Cassandra.
> Filter out keys from SSTables directly
> --------------------------------------
>
> Key: CASSANDRA-1581
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1581
> Project: Cassandra
> Issue Type: New Feature
> Components: Contrib
> Reporter: Weidong Zhang
> Priority: Minor
> Fix For: 0.6.7
>
> Attachments:
> 0001-Implemented-sstablefilter-utililty-tool-command.patch
>
>
> A command tool that filters out keys with a given prefix (or a list of
> prefixes) from an input SSTable and output the result to a new SSTable.
> Usage: org.apache.cassandra.tools.SSTableFilter <sstable_in> <sstable_out> -p
> prefix_of_key [-p prefix_of_key [...]]
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