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https://issues.apache.org/jira/browse/SOLR-1529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12770987#action_12770987
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Hoss Man commented on SOLR-1529:
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I'm not at a machine where i can try to reproduce this, but i want to try and
understand the severity ... looking at LogUPdateProcessorFactory via viewvc, I
believe what this bug is reporting is that if a single request includes more
then 8 (maxNumToLog) deleteByQuery directives, w/o including any deleteById
directives, then the logger will generate an NPE. (regardless of how many docs
were deleted)
Which means something like this would probably be a way to recreate it in the
example...
{noformat}
java -Ddata=args -jar post.jar
"<delete><query>X</query><query>X</query><query>X</query><query>X</query><query>X</query><query>X</query><query>X</query><query>X</query><query>X</query></delete>"
{noformat}
... and adding a single <id> entry (even if bogus, or possibly blank) would
work arround the problem....
{noformat}
java -Ddata=args -jar post.jar
"<delete><query>X</query><query>X</query><query>X</query><query>X</query><query>X</query><query>X</query><query>X</query><query>X</query><query>X</query><id
/></delete>"
java -Ddata=args -jar post.jar
"<delete><query>X</query><query>X</query><query>X</query><query>X</query><query>X</query><query>X</query><query>X</query><query>X</query><query>X</query><id>NOT_A_REAL_ID</id></delete>"
{noformat}
...is that all correct?
Questions should influence whether we consider this a show stopper for 1.4...
* Does the update succeed in spite of the NPE, or does the entire update fail?
* Is this bug new in 1.4, or will it also occur in 1.3 (skimming viewvc for
the 1.3 tag it looks like this bug has been around for a while)
> NullPointerException in LogUpdateProcessorFactory.java when deleting by query
> *only*
> ------------------------------------------------------------------------------------
>
> Key: SOLR-1529
> URL: https://issues.apache.org/jira/browse/SOLR-1529
> Project: Solr
> Issue Type: Bug
> Affects Versions: 1.4
> Reporter: Asmodean
> Fix For: 1.5
>
> Attachments: logger.patch
>
>
> The problem occurs when a RequestUpdate has deletions that are all *byQuery
> (as opposed to *byId). The variable 'deletes' is in this case never
> initialized and will cause a NullPointerException in some cases (where the
> number of deletions are high enough).
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