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https://issues.apache.org/jira/browse/CASSANDRA-2869?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13063993#comment-13063993
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Brandon Williams commented on CASSANDRA-2869:
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Looks like we can remove UDFCONTEXT_SCHEMA_KEY_PREFIX now too, no?
> CassandraStorage does not function properly when used multiple times in a
> single pig script due to UDFContext sharing issues
> ----------------------------------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-2869
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2869
> Project: Cassandra
> Issue Type: Bug
> Components: Contrib
> Affects Versions: 0.7.2
> Reporter: Grant Ingersoll
> Assignee: Jeremy Hanna
> Attachments: 2869.txt
>
>
> CassandraStorage appears to have threading issues along the lines of those
> described at http://pig.markmail.org/message/oz7oz2x2dwp66eoz due to the
> sharing of the UDFContext.
> I believe the fix lies in implementing
> {code}
> public void setStoreFuncUDFContextSignature(String signature)
> {
> }
> {code}
> and then using that signature when getting the UDFContext.
> From the Pig manual:
> {quote}
> setStoreFunc!UDFContextSignature(): This method will be called by Pig both in
> the front end and back end to pass a unique signature to the Storer. The
> signature can be used to store into the UDFContext any information which the
> Storer needs to store between various method invocations in the front end and
> back end. The default implementation in StoreFunc has an empty body. This
> method will be called before other methods.
> {quote}
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