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Posted to issues@spark.apache.org by "Eric Liang (JIRA)" <ji...@apache.org> on 2016/09/28 03:18:20 UTC

[jira] [Created] (SPARK-17701) Refactor DataSourceScanExec so its sameResult call does not compare strings

Eric Liang created SPARK-17701:
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             Summary: Refactor DataSourceScanExec so its sameResult call does not compare strings
                 Key: SPARK-17701
                 URL: https://issues.apache.org/jira/browse/SPARK-17701
             Project: Spark
          Issue Type: Improvement
            Reporter: Eric Liang


Currently, RowDataSourceScanExec and FileSourceScanExec rely on a "metadata" string map to implement equality comparison, since the RDDs they depend on cannot be directly compared. This has resulted in a number of correctness bugs around exchange reuse, e.g. SPARK-17673 and SPARK-16818.

To make these comparisons less brittle, we should refactor these classes to compare constructor parameters directly instead of relying on the metadata map.



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