[ https://issues.apache.org/jira/browse/CASSANDRA-10299?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Marcus Eriksson updated CASSANDRA-10299: ---------------------------------------- Fix Version/s: 2.2.2 2.1.10 3.0.0 rc1 > Issue with sstable selection when anti-compacting > ------------------------------------------------- > > Key: CASSANDRA-10299 > URL: https://issues.apache.org/jira/browse/CASSANDRA-10299 > Project: Cassandra > Issue Type: Bug > Environment: 4 node Cassandra 2.1.9 cluster (256 vnodes) > Reporter: Marcus Olsson > Assignee: Marcus Olsson > Fix For: 3.0.0 rc1, 2.1.10, 2.2.2 > > Attachments: CASSANDRA-10299-2.2.patch, CASSANDRA-10299-3.0.patch, > sstable-selection-for-anticompaction-2.1.patch > > > While running some tests with incremental repair we ran into some issues with > some data being repaired over and over again. The repairs where scheduled to > run every two hours on a different node. So e.g. > {noformat} > node1 would repair on hours 0, 8, 16 > node2 would repair on hours 2, 10, 18 > node3 would repair on hours 4, 12, 20 > node4 would repair on hours 6, 14, 22 > {noformat} > The data being repaired over and over where in a table with static data, so > it should've only been required to run repair once for that table. This table > generated ~700 small sstables per repair, and when I checked one node had > several thousands of sstables in that table alone. > The repair command used on each node was: > {noformat} > repair -inc -par > {noformat} > So after stopping all clients and waiting for compactions to finish I ran > sstablemetadata on the tables and saw that one table wasn't repaired. After > checking in the logs I something like this: > {noformat} > SSTable ..-ka-X-Data.db (..) will be anticompacted on range (..) > ... > SSTable ..-ka-X-Data.db (..) does not intersect repaired range (..), not > touching repairedAt. > {noformat} > So I checked the code and there seems to be an issue when one of the repaired > ranges does not intersect the sstable range. In that case it just removes the > sstable from the anticompaction regardless if any other repaired range > intersects with it. > Attaching patch for 2.1 that solves this and working on dtest for this. Will > create patch for 2.2 and 3.0 as well. -- This message was sent by Atlassian JIRA (v6.3.4#6332)