[ https://issues.apache.org/jira/browse/CASSANDRA-8182?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tyler Hobbs updated CASSANDRA-8182: ----------------------------------- Attachment: 8182-v2.txt The v2 patch moves the comparator to a static inner class. > Comparison method violates its general contract in > IndexSummaryManager.redistributeSummaries > -------------------------------------------------------------------------------------------- > > Key: CASSANDRA-8182 > URL: https://issues.apache.org/jira/browse/CASSANDRA-8182 > Project: Cassandra > Issue Type: Bug > Components: Core > Environment: 2.1.0 > Reporter: Juho Mäkinen > Assignee: Tyler Hobbs > Priority: Minor > Fix For: 2.1.2 > > Attachments: 8182-v2.txt, 8182.txt > > > I found this exception while going over the logs of my new 2.1.0 production > candidate cluster: > {noformat} > ERROR [IndexSummaryManager:1] 2014-10-23 14:37:56,727 > CassandraDaemon.java:166 - Exception in thread > Thread[IndexSummaryManager:1,1,main] > java.lang.IllegalArgumentException: Comparison method violates its general > contract! > at java.util.TimSort.mergeLo(TimSort.java:747) ~[na:1.7.0_67] > at java.util.TimSort.mergeAt(TimSort.java:483) ~[na:1.7.0_67] > at java.util.TimSort.mergeCollapse(TimSort.java:408) ~[na:1.7.0_67] > at java.util.TimSort.sort(TimSort.java:214) ~[na:1.7.0_67] > at java.util.TimSort.sort(TimSort.java:173) ~[na:1.7.0_67] > at java.util.Arrays.sort(Arrays.java:659) ~[na:1.7.0_67] > at java.util.Collections.sort(Collections.java:217) ~[na:1.7.0_67] > at > org.apache.cassandra.io.sstable.IndexSummaryManager.redistributeSummaries(IndexSummaryManager.java:277) > ~[apache-cassandra-2.1.0.jar:2.1.0] > at > org.apache.cassandra.io.sstable.IndexSummaryManager.redistributeSummaries(IndexSummaryManager.java:238) > ~[apache-cassandra-2.1.0.jar:2.1.0] > at > org.apache.cassandra.io.sstable.IndexSummaryManager$1.runMayThrow(IndexSummaryManager.java:139) > ~[apache-cassandra-2.1.0.jar:2.1.0] > at > org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28) > ~[apache-cassandra-2.1.0.jar:2.1.0] > at > org.apache.cassandra.concurrent.DebuggableScheduledThreadPoolExecutor$UncomplainingRunnable.run(DebuggableScheduledThreadPoolExecutor.java:75) > ~[apache-cassandra-2.1.0.jar:2.1.0] > at > java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) > [na:1.7.0_67] > at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304) > [na:1.7.0_67] > at > java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178) > [na:1.7.0_67] > at > java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) > [na:1.7.0_67] > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) > [na:1.7.0_67] > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) > [na:1.7.0_67] > at java.lang.Thread.run(Thread.java:745) [na:1.7.0_67] > {noformat} > There's some other cases of invalid comparison methods in the past, but not > from this case. -- This message was sent by Atlassian JIRA (v6.3.4#6332)