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https://issues.apache.org/jira/browse/LENS-382?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14349897#comment-14349897
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Amareshwari Sriramadasu commented on LENS-382:
----------------------------------------------
+1
> NPE in JoinResolver for wrong chains
> ------------------------------------
>
> Key: LENS-382
> URL: https://issues.apache.org/jira/browse/LENS-382
> Project: Apache Lens
> Issue Type: Bug
> Components: cube
> Affects Versions: 2.0
> Reporter: Amareshwari Sriramadasu
> Assignee: Sushil Mohanty
> Fix For: 2.1
>
> Attachments: LENS-382.patch
>
>
> We have seen NPE in JoinResolver mostly with wrong join chains defined in
> schema. But it should give proper error out than NPE.
> Here is the stacktrace :
> {noformat}
> 03 Mar 2015 04:56:20,798 [QuerySubmitter] WARN
> org.apache.lens.driver.cube.RewriteUtil - Driver :
> org.apache.lens.driver.hive.HiveDriver Skipped for the query rewriting due to
> java.lang.NullPointerException
> at
> org.apache.lens.cube.parse.JoinResolver$AutoJoinContext.pruneAllPathsForCandidateDims(JoinResolver.java:667)
> at
> org.apache.lens.cube.parse.CandidateTableResolver.rewriteContext(CandidateTableResolver.java:77)
> at
> org.apache.lens.cube.parse.CubeQueryRewriter.rewrite(CubeQueryRewriter.java:181)
> at
> org.apache.lens.cube.parse.CubeQueryRewriter.rewrite(CubeQueryRewriter.java:165)
> at
> org.apache.lens.cube.parse.CubeQueryRewriter.rewrite(CubeQueryRewriter.java:176)
> at
> org.apache.lens.driver.cube.RewriteUtil.rewriteQuery(RewriteUtil.java:239)
> at
> org.apache.lens.server.query.QueryExecutionServiceImpl.rewriteAndSelect(QueryExecutionServiceImpl.java:954)
> at
> org.apache.lens.server.query.QueryExecutionServiceImpl.access$800(QueryExecutionServiceImpl.java:71)
> at
> org.apache.lens.server.query.QueryExecutionServiceImpl$QuerySubmitter.run(QueryExecutionServiceImpl.java:460)
> at java.lang.Thread.run(Thread.java:701)
> {noformat}
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