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From "Kristian Waagan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-5087) NPE in istat daemon when encountering critical exception during shutdown
Date Wed, 02 Mar 2011 22:45:37 GMT

    [ https://issues.apache.org/jira/browse/DERBY-5087?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13001733#comment-13001733

Kristian Waagan commented on DERBY-5087:

Here's the stacktrace:

Exception in thread "index-stat-thread" java.lang.NullPointerException
    at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.disableIndexStatsRefresher(DataDictionaryImpl.java:13745)
    at org.apache.derby.impl.services.daemon.IndexStatisticsDaemonImpl.handleFatalErrors(IndexStatisticsDaemonImpl.java:896)
    at org.apache.derby.impl.services.daemon.IndexStatisticsDaemonImpl.run(IndexStatisticsDaemonImpl.java:761)

> NPE in istat daemon when encountering critical exception during shutdown
> ------------------------------------------------------------------------
>                 Key: DERBY-5087
>                 URL: https://issues.apache.org/jira/browse/DERBY-5087
>             Project: Derby
>          Issue Type: Bug
>          Components: Services, Store
>    Affects Versions:
>            Reporter: Kristian Waagan
>            Assignee: Kristian Waagan
>            Priority: Minor
> If the istat daemon encounters a critical error during shutdown and the data dictionary
module has been stopped, it will run into a NPE.
> This bug is highly timing-dependent in two ways: the data dictionary module must have
been stopped first, and then the istat daemon must encounter a critical error "at the right
> I have seen this bug once on my laptop.

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