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https://issues.apache.org/jira/browse/CONNECTORS-590?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13537637#comment-13537637
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Karl Wright commented on CONNECTORS-590:
----------------------------------------
The document is in the "Pending" state, according to the document status field.
It was, however, queued, and so must have been marked "Active". Unless
there's another thread around that is capable of turning "Active" into
"Pending", either the update at the time the document was queued didn't save,
or the read-for-update at the time of the update got an incorrect value from
the database.
A logic error in ManifoldCF is possible, but if it were present I would expect
to see it on other databases as well. A similar problem on HSQLDB turned out
to be a bug in the database software (CONNECTORS-246), for instance. Since
that fix only MySQL has continued to have very occasional errors of this kind.
> ManifoldCF sometimes throws an unexpected state exception under MySQL
> ---------------------------------------------------------------------
>
> Key: CONNECTORS-590
> URL: https://issues.apache.org/jira/browse/CONNECTORS-590
> Project: ManifoldCF
> Issue Type: Bug
> Components: Framework core
> Affects Versions: ManifoldCF 1.0.1, ManifoldCF 1.1
> Environment: MySQL 5.5.28, for Linux (x86_64), ManifoldCF 1.1-dev
> Reporter: Karl Wright
> Assignee: Karl Wright
> Fix For: ManifoldCF 1.1
>
>
> The following exception occurred under this setup:
> {code}
> 2012/12/21 10:09:37 ERROR (Worker thread '78') - Exception tossed: Unexpected
> jobqueue status - record id 1356045273314, expecting active status, saw 0
> org.apache.manifoldcf.core.interfaces.ManifoldCFException: Unexpected
> jobqueue status - record id 1356045273314, expecting active status, saw 0
> at
> org.apache.manifoldcf.crawler.jobs.JobQueue.updateCompletedRecord(JobQueue.java:742)
> at
> org.apache.manifoldcf.crawler.jobs.JobManager.markDocumentCompletedMultiple(JobManager.java:2438)
> at
> org.apache.manifoldcf.crawler.system.WorkerThread.run(WorkerThread.java:765)
> {code}
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