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From "Brandon Williams (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-3677) NPE during HH delivery when gossip turned off on target
Date Wed, 15 Feb 2012 17:01:02 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-3677?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13208580#comment-13208580
] 

Brandon Williams commented on CASSANDRA-3677:
---------------------------------------------

It doesn't make a lot of sense.  a) we have no way to quickly find such hints, and b) if you
removetoken the node, the data from existing replicas will be copied to restore the RF, so
the hint isn't necessary (unless you wrote at ANY, in which case you've already lived dangerously.)
                
> 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: 1.0.8
>
>         Attachments: 3677-v1.patch, 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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