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Alex Petrov commented on CASSANDRA-14910: ----------------------------------------- Thank you for the patch, Latest version looks good! +1 > Don't skip entire sstables when reading backwards with mixed clustering > column order > ------------------------------------------------------------------------------------ > > Key: CASSANDRA-14910 > URL: https://issues.apache.org/jira/browse/CASSANDRA-14910 > Project: Cassandra > Issue Type: Bug > Components: Local Write-Read Paths > Reporter: Aleksey Yeschenko > Assignee: Aleksey Yeschenko > Priority: Major > Fix For: 2.2.x > > > In 2.x, if a table has clustering columns in {{DESC}} order, any SSTable that > doesn’t have any static rows in it will be skipped altogether when iterated > in reverse. > This occurs due to the logic in {{ColumnSlice.compare()}} errorneusly sorting > any empty {{ByteBuffer}} after non-empty values due to the way > {{ReversedType}} operates. In case that empty {{ByteBuffer}} is coming from a > static {{Composite}}, however, the logic breaks down. Static {{Composite}} > components must *always* sort before any non-empty value, no matter the > table’s comparator. > 2.0, 2.1, and 2.2 are all affected. 3.0 isn’t, but only because we skip slice > intersection logic entirely if static rows are present in the filter. > Introduced by CASSANDRA-8502. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org