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From "Ian Maxon (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (ASTERIXDB-1137) Sporadic BufferCache cleaner thread NPE during test runs
Date Wed, 11 Nov 2015 17:32:11 GMT

    [ https://issues.apache.org/jira/browse/ASTERIXDB-1137?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15000718#comment-15000718
] 

Ian Maxon edited comment on ASTERIXDB-1137 at 11/11/15 5:31 PM:
----------------------------------------------------------------

I saw this stack trace as well on that test in my append-only branch. The only difference
being, the call below syncWrite was from the FIFO writer thread and not the page cleaner daemon
thread. 


was (Author: imaxon):
I saw this stack trace as well on that test in my append-only branch. The only difference
being, the call above syncWrite was from the FIFO writer thread and not the page cleaner daemon
thread. 

> Sporadic BufferCache cleaner thread NPE during test runs
> --------------------------------------------------------
>
>                 Key: ASTERIXDB-1137
>                 URL: https://issues.apache.org/jira/browse/ASTERIXDB-1137
>             Project: Apache AsterixDB
>          Issue Type: Bug
>            Reporter: Yingyi Bu
>            Assignee: Murtadha Hubail
>
> java.lang.NullPointerException
> 	at org.apache.hyracks.control.nc.io.IOManager.syncWrite(IOManager.java:93)
> 	at org.apache.hyracks.storage.common.buffercache.BufferCache.write(BufferCache.java:435)
> 	at org.apache.hyracks.storage.common.buffercache.BufferCache.access$400(BufferCache.java:46)
> 	at org.apache.hyracks.storage.common.buffercache.BufferCache$CleanerThread.cleanPage(BufferCache.java:499)
> 	at org.apache.hyracks.storage.common.buffercache.BufferCache$CleanerThread.run(BufferCache.java:533)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> 	at java.lang.Thread.run(Thread.java:745)



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