impala/testdata/workloads/perf-regression/perf-regression_pairwise.csv at c076f098d46292fec98eb3431ca292ed229c678d

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Jim Apple 7fc739f6d6 IMPALA-2897: Fix equality comparisons on null build-side rows.

If a hash table stores null build-side rows, then it must treat null
expressions in build side rows as being equal. Otherwise, long collision
chains can accumulate, as rows with the same nulls will have the same
hash values but not compare equal.

Equality between build rows and probe rows stays the same.

Change-Id: I5f11addca7dc97408f6eb89de5082657333d17b9
Reviewed-on: http://gerrit.cloudera.org:8080/1956
Reviewed-by: Jim Apple <jbapple@cloudera.com>
Tested-by: Internal Jenkins

2016-02-03 20:46:32 +00:00

346 B

Raw Blame History

1	# Generated File.
2	file_format: text, dataset: tpch, compression_codec: none, compression_type: none
3	file_format: seq, dataset: tpch, compression_codec: def, compression_type: block
4	file_format: seq, dataset: tpch, compression_codec: gzip, compression_type: record
5	file_format: text, dataset: tpch, compression_codec: lzo, compression_type: block

346 B Raw Blame History

346 B

Raw Blame History