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https://issues.apache.org/jira/browse/SPARK-1367?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Armbrust resolved SPARK-1367.
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Resolution: Fixed
> NPE when joining Parquet Relations
> ----------------------------------
>
> Key: SPARK-1367
> URL: https://issues.apache.org/jira/browse/SPARK-1367
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Reporter: Michael Armbrust
> Assignee: Andre Schumacher
> Priority: Blocker
> Fix For: 1.0.0
>
>
> {code}
> test("self-join parquet files") {
> val x = ParquetTestData.testData.subquery('x)
> val y = ParquetTestData.testData.newInstance.subquery('y)
> val query = x.join(y).where("x.myint".attr === "y.myint".attr)
> query.collect()
> }
> {code}
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