[ https://issues.apache.org/jira/browse/CASSANDRA-3677?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13178422#comment-13178422 ]
Radim Kolar commented on CASSANDRA-3677: ---------------------------------------- I suspect that this is happening when node is trying to deliver hints created for himself (to is null after all) because i have some stuck hints, cant list them via CLI to look at keys because node will OOM. INFO [CompactionExecutor:7] 2012-01-02 15:48:13,084 CompactionTask.java (line 221) Compacted to [/usr/local/cassandra/data/system/HintsColumnFamily-hc-1011-Data.db,]. 168,568,056 to 163,770,679 (~97% of original) bytes for 1 keys at 29.619551MB/s. Time: 5,273ms. Its 2 node cluster and no hints were delivered to other node: INFO [HintedHandoff:1] 2012-01-02 15:41:29,035 HintedHandOffManager.java (line 267) Started hinted handoff for token: 99070591730234615865843651857942052864 INFO [HintedHandoff:1] 2012-01-02 15:41:29,217 HintedHandOffManager.java (line 334) Finished hinted handoff of 0 rows to > NPE during HH delivery when gossip turned off on target > ------------------------------------------------------- > > Key: CASSANDRA-3677 > URL: https://issues.apache.org/jira/browse/CASSANDRA-3677 > Project: Cassandra > Issue Type: Bug > Affects Versions: 1.0.7 > Reporter: Radim Kolar > Assignee: Brandon Williams > Priority: Trivial > Fix For: 1.0.7 > > Attachments: 3677.txt > > > probably not important bug > ERROR [OptionalTasks:1] 2011-12-27 21:44:25,342 AbstractCassandraDaemon.java > (line 138) Fatal exception in thread Thread[OptionalTasks:1,5,main] > java.lang.NullPointerException > at > org.cliffc.high_scale_lib.NonBlockingHashMap.hash(NonBlockingHashMap.java:113) > at > org.cliffc.high_scale_lib.NonBlockingHashMap.putIfMatch(NonBlockingHashMap.java:553) > at > org.cliffc.high_scale_lib.NonBlockingHashMap.putIfMatch(NonBlockingHashMap.java:348) > at > org.cliffc.high_scale_lib.NonBlockingHashMap.putIfAbsent(NonBlockingHashMap.java:319) > at > org.cliffc.high_scale_lib.NonBlockingHashSet.add(NonBlockingHashSet.java:32) > at > org.apache.cassandra.db.HintedHandOffManager.scheduleHintDelivery(HintedHandOffManager.java:371) > at > org.apache.cassandra.db.HintedHandOffManager.scheduleAllDeliveries(HintedHandOffManager.java:356) > at > org.apache.cassandra.db.HintedHandOffManager.access$000(HintedHandOffManager.java:84) > at > org.apache.cassandra.db.HintedHandOffManager$1.run(HintedHandOffManager.java:119) > at > java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) > at > java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:351) > at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:178) > at > java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:165) > at > java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:267) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) > at java.lang.Thread.run(Thread.java:679) -- 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