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Jason Rutherglen commented on CASSANDRA-4324:
---------------------------------------------
Also it should be mentioned, using the FST will be a big win for garbage
collection, it's basically a single byte[]. The IndexSummary currently uses a
lot of object pointers, which are more costly than a single byte[].
> 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, CASSANDRA-4324.patch,
> CASSANDRA-4324.patch, lucene-core-4.0-SNAPSHOT.jar
>
>
> 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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