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https://issues.apache.org/jira/browse/DERBY-3347?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12586801#action_12586801
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Knut Anders Hatlen commented on DERBY-3347:
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Thomas:
> Do you think that this, or a rather similar scenario, could also be the
> reason for some of the checksum inconsistencies that have been reported
> lately?
Yes, that could be the reason, at least if the checksum inconsistencies happen
on page 0 (which is the first alloc page). There also are a lot of reports
about EOFException thrown by RandomAccessFile.readFully() in
FileContainer.getEmbryonicPage() (all seen on Windows only) which I think are
likely caused by the same problem.
Dyre: Yes, I have a patch in the pipeline. I haven't tested it yet, but I'll do
so and post it tomorrow. I'll leave it up to you to decide whether it is worth
a new RC. If it fixes these problems, I think it is worth it, but it is
probably difficult to verify the fix that quickly.
> ERROR XSDB3: Container information cannot change once written
> -------------------------------------------------------------
>
> Key: DERBY-3347
> URL: https://issues.apache.org/jira/browse/DERBY-3347
> Project: Derby
> Issue Type: Bug
> Components: Store
> Affects Versions: 10.3.1.4, 10.3.2.1
> Environment: Windows 2003 Server
> Sun Java 1.6.0_03
> Reporter: Bogdan Calmac
> Assignee: Knut Anders Hatlen
> Priority: Critical
>
> We are using derby as an embedded DB for our data collection server. During
> an endurance test when we do around 270 inserts and 9 updates per second, for
> about a week, I ocasionally see the error below in the deby log (and nothing
> else beside this).
> This is a vanilla installation, we run derby embedded with no extra
> configuration. I can confirm that there is no memory problem, the heap usage
> seems constant over time.
> Can somebody provide some more information regarding the effects of this
> error? By looking at the stacktrace, it looks like a checkpoint operation is
> aborted due to some inconsistency in the internal data structure. If the
> error does not repeat immediately, does it mean that the next checkpoint is
> successful and there is no data loss?
> I can't provide a test case for that, the error happens after about 1-2 day
> of running our software. I will rerun the test with the debug jars to capture
> the line numbers in the stacktrace. Also, I'm starting another test with
> 10.2.2.0, to see if this problem was introduced in the latest version.
> There are another two bugs referring to this error,
> (https://issues.apache.org/jira/browse/DERBY-2284 and
> https://issues.apache.org/jira/browse/DERBY-3087) but they seem to happen in
> response to some client action. This use case is a bit different, the client
> keeps inserting and updating records for several days in a steady manner and
> at some point the error pops up.
> And lastly, here is the exception:
> Checkpoint Daemon caught standard exception
> ------------ BEGIN ERROR STACK -------------
> ERROR XSDB3: Container information cannot change once written: was 0, now 80
> at org.apache.derby.iapi.error.StandardException.newException(Unknown
> Source)
> at
> org.apache.derby.impl.store.raw.data.AllocPage.WriteContainerInfo(Unknown
> Source)
> at
> org.apache.derby.impl.store.raw.data.FileContainer.writeHeader(Unknown Source)
> at
> org.apache.derby.impl.store.raw.data.RAFContainer.writeRAFHeader(Unknown
> Source)
> at org.apache.derby.impl.store.raw.data.RAFContainer.clean(Unknown
> Source)
> at org.apache.derby.impl.services.cache.CachedItem.clean(Unknown Source)
> at org.apache.derby.impl.services.cache.Clock.cleanCache(Unknown Source)
> at org.apache.derby.impl.services.cache.Clock.cleanAll(Unknown Source)
> at
> org.apache.derby.impl.store.raw.data.BaseDataFileFactory.checkpoint(Unknown
> Source)
> at
> org.apache.derby.impl.store.raw.log.LogToFile.checkpointWithTran(Unknown
> Source)
> at org.apache.derby.impl.store.raw.log.LogToFile.checkpoint(Unknown
> Source)
> at org.apache.derby.impl.store.raw.RawStore.checkpoint(Unknown Source)
> at org.apache.derby.impl.store.raw.log.LogToFile.performWork(Unknown
> Source)
> at
> org.apache.derby.impl.services.daemon.BasicDaemon.serviceClient(Unknown
> Source)
> at org.apache.derby.impl.services.daemon.BasicDaemon.work(Unknown
> Source)
> at org.apache.derby.impl.services.daemon.BasicDaemon.run(Unknown Source)
> at java.lang.Thread.run(Thread.java:619)
> ------------ END ERROR STACK -------------
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