[ https://issues.apache.org/jira/browse/CASSANDRA-2610?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jonathan Ellis updated CASSANDRA-2610: -------------------------------------- Attachment: 0003-cleanup-and-fix-private-reference.patch 03 fixes a reference to private UUIDGen.instance field, and cleans up RepairJob to (1) use concurrent structures instead of synchronized and (2) track Differencer objects directly instead of using Pair<InetAddress, InetAddress> as proxies. Also adds some comments. otherwise, lgtm. > Have the repair of a range repair *all* the replica for that range > ------------------------------------------------------------------ > > Key: CASSANDRA-2610 > URL: https://issues.apache.org/jira/browse/CASSANDRA-2610 > Project: Cassandra > Issue Type: Improvement > Components: Core > Affects Versions: 0.8 beta 1 > Reporter: Sylvain Lebresne > Assignee: Sylvain Lebresne > Priority: Minor > Fix For: 1.0 > > Attachments: 0001-Make-repair-repair-all-hosts-v2.patch, > 0001-Make-repair-repair-all-hosts.patch, 0002-Cleanup-log-messages-v2.patch, > 0003-cleanup-and-fix-private-reference.patch > > Original Estimate: 8h > Remaining Estimate: 8h > > Say you have a range R whose replica for that range are A, B and C. If you > run repair on node A for that range R, when the repair end you only know that > A is fully repaired. B and C are not. That is B and C are up to date with A > before the repair, but are not up to date with one another. > It makes it a pain to schedule "optimal" cluster repairs, that is repairing a > full cluster without doing work twice (because you would have still have to > run a repair on B or C, which will make A, B and C redo a validation > compaction on R, and with more replica it's even more annoying). > However it is fairly easy during the first repair on A to have him compare > all the merkle trees, i.e the ones for B and C, and ask to B or C to stream > between them whichever the differences they have. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira