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Jonathan Ellis commented on CASSANDRA-2470: ------------------------------------------- CASSANDRA-2897 is another possible optimization. > Secondary Indexes Build Very Slowly > ----------------------------------- > > Key: CASSANDRA-2470 > URL: https://issues.apache.org/jira/browse/CASSANDRA-2470 > Project: Cassandra > Issue Type: Improvement > Reporter: Benjamin Coverston > Labels: repair, secondary_index > > While running repair I noticed that the time it took to run was easily > dominated by building the secondary indexes. They currently build at a rate > of < 200KB/Second. This means that indexing a 500MB file takes nearly an hour > to index the file. > Because this happens on the compaction thread it also causes repair to back > up in general, which for very active systems is a very bad thing. > I suggest we look at it in the hope that we can improve the rate in which we > build the indexes by an order of magnitude. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira