[teiid-issues] [JBoss JIRA] (TEIID-2946) NPE with a join and a dup_remove child

[Steven Hawkins (JIRA)]

Steven Hawkins created TEIID-2946:
-------------------------------------

             Summary: NPE with a join and a dup_remove child
                 Key: TEIID-2946
                 URL: https://issues.jboss.org/browse/TEIID-2946
             Project: Teiid
          Issue Type: Bug
          Components: Query Engine
    Affects Versions: 8.7
            Reporter: Steven Hawkins
            Assignee: Steven Hawkins
            Priority: Critical
             Fix For: 8.7.1, 8.8


A plan structure such as:

{code}
JoinNode ... [CROSS JOIN]
   ...
   SortNode ... [DUP_REMOVE] 
{code}
Will cause an NPE during prefetch:

{code}
28 Apr 2014 05:35:28,574 ERROR [org.teiid.PROCESSOR] (http-CA31/141.202.65.31:30804-2) eA83y/9ZGnji TEIID30019 Unexpected exception for request eA83y/9ZGnji.6: java.lang.NullPointerException

  at org.teiid.query.processor.relational.SourceState.prefetch(SourceState.java:203)

  at org.teiid.query.processor.relational.JoinNode.prefetch(JoinNode.java:231)

  at org.teiid.query.processor.relational.JoinNode.nextBatchDirect(JoinNode.java:223)
{code}

This is an oversight in that we generally are expecting an equi-join (which would incorporate the dup removal processing) or marking the dup remove as dup remove sort (the fully blocking variant).



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