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https://issues.apache.org/jira/browse/CASSANDRA-3385?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13130936#comment-13130936
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Yang Yang commented on CASSANDRA-3385:
--------------------------------------
the hints code was from:
https://github.com/apache/cassandra/commit/3893f24098c3d82dc31571f0b6841e2d5821ea74#diff-12
#CASSANDRA-2034
maybe it should be better to NOT let the writer wait for hints to finish? right
now the local hints write make the entire write slower in probably 2 ways : 1)
the main write has to wait for hint write to finish, which is slow due to lock
2) hints writes are slow, which create a lot of jobs on MUTATION stage, so even
if main write does not wait for them, the MUTATION stage could possibly be
bogged down with hints writes, and not able to handle normal writes fast enough
> NPE in hinted handoff
> ---------------------
>
> Key: CASSANDRA-3385
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3385
> Project: Cassandra
> Issue Type: Bug
> Reporter: Yang Yang
> Priority: Critical
>
> I'm using the current HEAD of 1.0.0 github branch, and I'm still seeing this
> error, not sure if it's this bug or another one.
> INFO [HintedHandoff:1] 2011-10-19 12:43:17,674 HintedHandOffManager.java
> (line 263) Started hinted handoff for token: 11342745564
> 0312821154458202477256070484 with IP: /10.39.85.140
> ERROR [HintedHandoff:1] 2011-10-19 12:43:17,885 AbstractCassandraDaemon.java
> (line 133) Fatal exception in thread Thread[HintedHan
> doff:1,1,main]
> java.lang.RuntimeException: java.lang.NullPointerException
> at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:34)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:662)
> Caused by: java.lang.NullPointerException
> at
> org.apache.cassandra.db.HintedHandOffManager.deliverHintsToEndpoint(HintedHandOffManager.java:289)
> at
> org.apache.cassandra.db.HintedHandOffManager.access$100(HintedHandOffManager.java:81)
> at
> org.apache.cassandra.db.HintedHandOffManager$2.runMayThrow(HintedHandOffManager.java:337)
> at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
> ... 3 more
> ERROR [HintedHandoff:1] 2011-10-19 12:43:17,886 AbstractCassandraDaemon.java
> (line 133) Fatal exception in thread Thread[HintedHandoff:1,1,main]
> java.lang.RuntimeException: java.lang.NullPointerException
> at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:34)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:662)
> Caused by: java.lang.NullPointerException
> at
> org.apache.cassandra.db.HintedHandOffManager.deliverHintsToEndpoint(HintedHandOffManager.java:289)
> at
> org.apache.cassandra.db.HintedHandOffManager.access$100(HintedHandOffManager.java:81)
> at
> org.apache.cassandra.db.HintedHandOffManager$2.runMayThrow(HintedHandOffManager.java:337)
> at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
> ... 3 more
> this could possibly be related to #3291
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