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https://issues.apache.org/jira/browse/CASSANDRA-16044?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ZhaoYang updated CASSANDRA-16044:
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Summary: Query SSTable Indexes lazily in token sorted runs for LCS, TWCS or
RangeAwaredCompaction (was: Query SSTable Indexes in token sorted runs for LCS
and TWCS)
> Query SSTable Indexes lazily in token sorted runs for LCS, TWCS or
> RangeAwaredCompaction
> ----------------------------------------------------------------------------------------
>
> Key: CASSANDRA-16044
> URL: https://issues.apache.org/jira/browse/CASSANDRA-16044
> Project: Cassandra
> Issue Type: Improvement
> Components: Feature/SASI
> Reporter: ZhaoYang
> Priority: Normal
>
> Currently SASI searches all SSTable indexes that may include the query
> partition key and indexed term, but this will cause large IO overhead with
> range index query (ie. age > 18) when sstable count is huge.
> Proposed improvement: query sstable indexes in token-sorted-runs lazily. When
> the data in the first few token ranges is sufficient for limit, SASI can
> reduce the overhead of searching sstable indexes for the remaining ranges.
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