Imran Rashid created SPARK-12560:
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Summary: SqlTestUtils.stripSparkFilter needs to copy utf8strings
Key: SPARK-12560
URL: https://issues.apache.org/jira/browse/SPARK-12560
Project: Spark
Issue Type: Test
Components: SQL
Reporter: Imran Rashid
Priority: Minor
{{SqlTestUtils.stripSparkFilter}} needs to make copies of the UTF8Strings, eg.,
with {{FromUnsafeProjection}} to avoid returning duplicates of the same row
(see SPARK-9459).
Right now, this isn't causing any problems, since the parquet string predicate
pushdown is turned off (see SPARK-11153). However I ran into this while trying
to get the predicate pushdown to work with a different version of parquet.
Without this fix, there were errors like:
{noformat}
[info] !== Correct Answer - 4 == == Spark Answer - 4 ==
[info] ![1] [2]
[info] [2] [2]
[info] ![3] [4]
[info] [4] [4] (QueryTest.scala:127)
{noformat}
I figure its worth making this change now while I ran into it. PR coming
shortly
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