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https://issues.apache.org/jira/browse/LENS-95?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14258971#comment-14258971
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Jaideep Dhok commented on LENS-95:
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[~raghavendra.singh] Can you put up some of the queries where this is failing?
The stack trace is out of date.
> NPE from replaceChainedColumns for some queries
> -----------------------------------------------
>
> Key: LENS-95
> URL: https://issues.apache.org/jira/browse/LENS-95
> Project: Apache Lens
> Issue Type: Bug
> Reporter: Raghavendra Singh
> Assignee: Jaideep Dhok
> Fix For: 2.0
>
>
> {CODE}
> org.apache.lens.api.LensException: Rewriting failed, cause :null
> at
> org.apache.lens.driver.cube.RewriteUtil.rewriteQuery(RewriteUtil.java:278)
> at
> org.apache.lens.server.query.QueryExecutionServiceImpl.rewriteAndSelect(QueryExecutionServiceImpl.java:967)
> at
> org.apache.lens.server.query.QueryExecutionServiceImpl.access$800(QueryExecutionServiceImpl.java:89)
> at
> org.apache.lens.server.query.QueryExecutionServiceImpl$QuerySubmitter.run(QueryExecutionServiceImpl.java:476)
> at java.lang.Thread.run(Thread.java:701)
> Caused by: java.lang.NullPointerException
> at
> org.apache.lens.cube.parse.AliasReplacer.replaceChainedColumns(AliasReplacer.java:116)
> at
> org.apache.lens.cube.parse.AliasReplacer.rewriteContext(AliasReplacer.java:73)
> at
> org.apache.lens.cube.parse.CubeQueryRewriter.rewrite(CubeQueryRewriter.java:186)
> at
> org.apache.lens.cube.parse.CubeQueryRewriter.rewrite(CubeQueryRewriter.java:170)
> at
> org.apache.lens.cube.parse.CubeQueryRewriter.rewrite(CubeQueryRewriter.java:181)
> at
> org.apache.lens.driver.cube.RewriteUtil.rewriteQuery(RewriteUtil.java:249)
> ... 4 more
> {CODE}
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