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Jonathan Ellis commented on CASSANDRA-4180: ------------------------------------------- Rebased on top of CASSANDRA-5511 with a fix or two: http://github.com/jbellis/cassandra/tree/4180-4 Now passes the "start 1.2, rebuild and start 4180-4" test. > Single-pass compaction for LCR > ------------------------------ > > Key: CASSANDRA-4180 > URL: https://issues.apache.org/jira/browse/CASSANDRA-4180 > Project: Cassandra > Issue Type: Improvement > Components: Core > Reporter: Sylvain Lebresne > Assignee: Jonathan Ellis > Labels: compaction > Fix For: 2.0 > > Attachments: scrub-error.txt > > > LazilyCompactedRow reads all data twice to compact a row which is obviously > inefficient. The main reason we do that is to compute the row header. > However, CASSANDRA-2319 have removed the main part of that row header. What > remains is the size in bytes and the number of columns, but it should be > relatively simple to remove those, which would then remove the need for the > two-phase compaction. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira