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https://issues.apache.org/jira/browse/GEODE-3021?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16045217#comment-16045217
 ] 

ASF subversion and git services commented on GEODE-3021:
--------------------------------------------------------

Commit d49e87969a6535e67b00c5ddbfba6915063e4f2e in geode's branch 
refs/heads/release/1.2.0 from [~huynhja]
[ https://git-wip-us.apache.org/repos/asf?p=geode.git;h=d49e879 ]

GEODE-3021: Any call after the first to setPdxStringFlag should no-op

  * The flag isIndexedPdxKeysFlagSet is now checked before setting pdx string 
flag

(cherry picked from commit f34d04754f27ad8f577ba54d0d0f18880322eaf7)


> OQL Index isIndexedPdxKeys potential concurrency issue
> ------------------------------------------------------
>
>                 Key: GEODE-3021
>                 URL: https://issues.apache.org/jira/browse/GEODE-3021
>             Project: Geode
>          Issue Type: Bug
>          Components: querying
>            Reporter: Jason Huynh
>            Assignee: Jason Huynh
>             Fix For: 1.3.0
>
>
> The boolean isIndexedPdxKeys is set in a synchronized method.  However 
> multiple threads could be making a call to this method, the last caller would 
> set the flag based on it's key, either true or false, but the previous 
> callers could have meant to set it to the opposite.
> This method sets isIndexedPdxKeysFlagSet afterwards and hopes that callers to 
> this method check this flag first.  However, again, multiple threads could 
> have checked this flag, seen it as false, and then all attempted to call the 
> synchronized method.  
> The solution is to probably check the isIndexedPdxKeysFlagSet flag in the 
> method also.  That way, if another thread had already completed 
> setPdxStringFlag(), the next call would be a no-op.
> The current issue will lead to possible class cast exceptions from String to 
> PdxString or vice versa



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