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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