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https://issues.apache.org/jira/browse/CASSANDRA-3677?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13177099#comment-13177099
 ] 

Radim Kolar commented on CASSANDRA-3677:
----------------------------------------

This error is not related to target node down, i got it today and no nodes down 
are reported.


INFO [HintedHandoff:1] 2011-12-29 10:49:38,993 HintedHandOffManager.java (line 
334) Finished hinted handoff of 0 rows to endpoint /216.17.99.40

 INFO [CompactionExecutor:5] 2011-12-29 10:54:52,465 CompactionTask.java (line 
113) Compacting 
[SSTableReader(path='/usr/local/cassandra/data/system/HintsColumnFamily-hc-963-Data.db'),
 
SSTableReader(path='/usr/local/cassandra/data/system/HintsColumnFamily-hc-962-Data.db')]
 INFO [CompactionExecutor:5] 2011-12-29 10:55:08,744 CompactionTask.java (line 
221) Compacted to 
[/usr/local/cassandra/data/system/HintsColumnFamily-hc-964-Data.db,].  
709,504,640 to 165,449,718 (~23% of original) bytes for 2 keys at 9.692558MB/s. 
 Time: 16,279ms.

ERROR [OptionalTasks:1] 2011-12-29 10:59:06,482 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)
                
> 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)

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