Gengliang Wang dd8f6b1ce8 [SPARK-25541][SQL][FOLLOWUP] Remove overriding filterKeys in CaseInsensitiveMap ... ## What changes were proposed in this pull request? As per the discussion in https://github.com/apache/spark/pull/22553#pullrequestreview-159192221, override `filterKeys` violates the documented semantics. This PR is to remove it and add documentation. Also fix one potential non-serializable map in `FileStreamOptions`. The only one call of `CaseInsensitiveMap`'s `filterKeys` left is c3c45cbd76/sql/hive/src/main/scala/org/apache/spark/sql/hive/execution/HiveOptions.scala (L88-L90) But this one is OK. ## How was this patch tested? Existing unit tests. Closes #22562 from gengliangwang/SPARK-25541-FOLLOWUP. Authored-by: Gengliang Wang <gengliang.wang@databricks.com> Signed-off-by: Wenchen Fan <wenchen@databricks.com>		2018-09-27 19:53:13 +08:00
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benchmarks	[SPARK-25481][SQL][TEST] Refactor ColumnarBatchBenchmark to use main method	2018-09-26 20:40:10 -07:00
src	[SPARK-25541][SQL][FOLLOWUP] Remove overriding filterKeys in CaseInsensitiveMap	2018-09-27 19:53:13 +08:00
pom.xml	[SPARK-25436] Bump master branch version to 2.5.0-SNAPSHOT	2018-09-15 16:24:02 -07:00