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From "Mike Matrigali (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-5624) System can run out of stack space while processing DropOnCommit requests.
Date Tue, 28 Feb 2012 18:39:46 GMT

    [ https://issues.apache.org/jira/browse/DERBY-5624?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13218446#comment-13218446
] 

Mike Matrigali commented on DERBY-5624:
---------------------------------------

i'd appreciate it if someone good with junit could review my new test.  Most critical would
be if it has the appropriate decorators.  I could move the new test to the end if we think
it is affecting the other tests, or alter the test to drop the table sooner (I was assuming
the table would get
dropped automatically).  The new test really should not be that much of a drain on disk space,
compared to the rest of the tests as it mostly
adds 1000 small files.   

I can also back out test on windows also if we think it is causing problems there.  
                
> System can run out of stack space while processing DropOnCommit requests.
> -------------------------------------------------------------------------
>
>                 Key: DERBY-5624
>                 URL: https://issues.apache.org/jira/browse/DERBY-5624
>             Project: Derby
>          Issue Type: Bug
>          Components: Store
>    Affects Versions: 10.8.2.2
>            Reporter: Mike Matrigali
>            Assignee: Mike Matrigali
>              Labels: derby_triage10_9
>             Fix For: 10.9.0.0
>
>         Attachments: DERBY-5624.patch, error-stacktrace_mod.out, largedatasuite_mod.out
>
>
> The system currently recursively calls xact.notifyObservers() from DropOnCommit.update().
 It does this because in some cases
> new observers can be added while processing the list of notifyObservers and those were
being missed before the change, causing
> Assertions in the tests and possibly files not properly dropped on commit.
> Multiple users on the Derby user list have had failures running SYSCS_UTIL.SYSCS_COMPRESS_TABLE(),
running out of stack track
> with a heavily recursive stack trace of the form (see more detail from these reports
in subsequent comments):
> Caused by: java.lang.StackOverflowError
> at java.lang.ThreadLocal.get(ThreadLocal.java:125)
> at java.lang.StringCoding.deref(StringCoding.java:46)
> at java.lang.StringCoding.encode(StringCoding.java:258)
> at java.lang.String.getBytes(String.java:946)
> at java.io.UnixFileSystem.getBooleanAttributes0(Native Method)
> at java.io.UnixFileSystem.getBooleanAttributes(UnixFileSystem.java:228)
> at java.io.File.exists(File.java:733)
> at org.apache.derby.impl.store.raw.data.StreamFileContainer.run(Unknown Source)
> at java.security.AccessController.doPrivileged(Native Method)
> at org.apache.derby.impl.store.raw.data.StreamFileContainer.privExists(Unknown Source)
> at org.apache.derby.impl.store.raw.data.StreamFileContainer.open(Unknown Source)
> at org.apache.derby.impl.store.raw.data.BaseDataFileFactory.openStreamContainer(Unknown
Source)
> at org.apache.derby.impl.store.raw.xact.Xact.openStreamContainer(Unknown Source)
> at org.apache.derby.impl.store.raw.data.BaseDataFileFactory.dropStreamContainer(Unknown
Source)
> at org.apache.derby.impl.store.raw.xact.Xact.dropStreamContainer(Unknown Source)
> at org.apache.derby.impl.store.raw.data.DropOnCommit.update(Unknown Source)
> at java.util.Observable.notifyObservers(Observable.java:142)
> at org.apache.derby.iapi.store.raw.xact.RawTransaction.notifyObservers(Unknown Source)
> at org.apache.derby.impl.store.raw.data.DropOnCommit.update(Unknown Source)
> at java.util.Observable.notifyObservers(Observable.java:142)
> at org.apache.derby.iapi.store.raw.xact.RawTransaction.notifyObservers(Unknown Source)
> at org.apache.derby.impl.store.raw.data.DropOnCommit.update(Unknown Source)
> at java.util.Observable.notifyObservers(Observable.java:142)
> at org.apache.derby.iapi.store.raw.xact.RawTransaction.notifyObservers(Unknown Source)
> at org.apache.derby.impl.store.raw.data.DropOnCommit.update(Unknown Source)
> at java.util.Observable.notifyObservers(Observable.java:142)

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