Sam Tunnicliffe created CASSANDRA-10560:
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Summary: Remove unnecessary index lookups for single partition
reads
Key: CASSANDRA-10560
URL: https://issues.apache.org/jira/browse/CASSANDRA-10560
Project: Cassandra
Issue Type: Bug
Reporter: Sam Tunnicliffe
Assignee: Sam Tunnicliffe
Fix For: 3.0.0
For single partition reads, we currently perform an unnecessary call to
SecondaryIndexManager to lookup the most selective index based on the command's
RowFilter. This is redundant as if any applicable indexes are present, the
query would be performed using a range command (there was some code introduced
into {{CassandraIndexSearcher}} by CASSANDRA-8099 in preparation for supporting
indexes on single partition reads, but it is as yet unused). Given that, we
should make sure we don't perform that lookup for now.
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