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https://issues.apache.org/jira/browse/CASSANDRA-4324?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13406591#comment-13406591
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Jonathan Ellis commented on CASSANDRA-4324:
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bq. In general the big win with the FST is the amount of RAM consumed should be
far less. That is fairly easy to measure by generating N keys and comparing the
RAM usage
I think that's what yuki meant by "micro benchmark [of] memory."
> Implement Lucene FST in for key index
> -------------------------------------
>
> Key: CASSANDRA-4324
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4324
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Jason Rutherglen
> Assignee: Jason Rutherglen
> Priority: Minor
> Fix For: 1.2
>
> Attachments: CASSANDRA-4324.patch
>
>
> The Lucene FST data structure offers a compact and fast system for indexing
> Cassandra keys. More keys may be loaded which in turn should seeks faster.
> * Update the IndexSummary class to make use of the Lucene FST, overriding the
> serialization mechanism.
> * Alter SSTableReader to make use of the FST seek mechanism
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