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https://issues.apache.org/jira/browse/CONNECTORS-1581?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16763667#comment-16763667
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Karl Wright commented on CONNECTORS-1581:
-----------------------------------------

I am pretty concerned that the database layer is fundamentally not working 
right.  The fact that the set priority thread recovers argues that there is a 
database failure that silently resolves.  This is bizarre.

If the thread actually finally starts, then you should be good to go other than 
the concerns expressed above.


> [Set priority thread] Error tossed: null during startup
> -------------------------------------------------------
>
>                 Key: CONNECTORS-1581
>                 URL: https://issues.apache.org/jira/browse/CONNECTORS-1581
>             Project: ManifoldCF
>          Issue Type: Bug
>         Environment: •        ManifoldCF 2.12, running in a Docker Container 
> based on Redhat Linux, OpenJDK 8 
> •     AWS RDS Database (Aurora MySQL -> 5.6 compatible, utf8 (collation 
> utf8_bin))
> •     Single Process Setup
>            Reporter: Markus Schuch
>            Priority: Major
>
> We see the following {{NullPointerException}} at startup:
> {code}
> [Set priority thread] FATAL org.apache.manifoldcf.crawlerthreads- Error 
> tossed: null
> java.lang.NullPointerException
> at 
> org.apache.manifoldcf.crawler.system.ManifoldCF.writeDocumentPriorities(ManifoldCF.java:1202)
> at 
> org.apache.manifoldcf.crawler.system.SetPriorityThread.run(SetPriorityThread.java:141)
> {code}
> What could be the cause of that?



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