[jira] [Commented] (ACCUMULO-1628) NPE on deep copied dumped memory iterator

["John Vines (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ACCUMULO-1628?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14217068#comment-14217068 ] 

John Vines commented on ACCUMULO-1628:
--------------------------------------

Additonal info: no related errors as far as I can tell in the datanode logs.

The error message is a bit of a misnomer though. The mem dump file has been created, there are EOF exceptions coming up when the sourceSwitchingIterator the memdump file up to the SSI's key.

> NPE on deep copied dumped memory iterator
> -----------------------------------------
>
>                 Key: ACCUMULO-1628
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-1628
>             Project: Accumulo
>          Issue Type: Bug
>    Affects Versions: 1.4.0, 1.5.0
>            Reporter: Keith Turner
>            Assignee: Keith Turner
>            Priority: Blocker
>             Fix For: 1.5.2, 1.6.1, 1.7.0
>
>         Attachments: ACCUMULO-1628-1.5.2-SNAPSHOT-1.patch, ACCUMULO-1628-1.5.2-SNAPSHOT-2.patch, ACCUMULO-1628-1.5.2-SNAPSHOT-3.patch, ACCUMULO-1628-1.patch, ACCUMULO-1628-SET_INTR.patch, bpopp-ACCUMULO-1628.log
>
>          Time Spent: 1h
>  Remaining Estimate: 0h
>
> Accumulo may dump memory while a scan is running and transparently switch iterators from memory to file.  If an iterator calls deepcopy after this happens, then seek will fail on the deep copy.
> {noformat}
> java.lang.NullPointerException
> 	at org.apache.accumulo.server.tabletserver.InMemoryMap$MemoryDataSource.iterator(InMemoryMap.java:349)
> 	at org.apache.accumulo.core.iterators.system.SourceSwitchingIterator.seek(SourceSwitchingIterator.java:163)
> {noformat}



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