[Impala-ASF-CR] IMPALA-7659: Populate NULL count while computing column stats

["Bharath Vissapragada (Code Review)" <ge...@cloudera.org>]

Bharath Vissapragada has uploaded a new patch set (#6) to the change originally created by piotr.findeisen@gmail.com. ( http://gerrit.cloudera.org:8080/11565 )

Change subject: IMPALA-7659: Populate NULL count while computing column stats
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IMPALA-7659: Populate NULL count while computing column stats

It was disabled for performance reasons (IMPALA-1003) and this patch
re-enables it since a lot of codegen improvements have happened since
then.

This patch switches the aggregation to use the CASE conditional instead
of IF since the former has proper codegen support (IMPALA-7655).

Tests: Updated the affected tests to include the null counts.

Change-Id: Ic68f8b4c3756eb1980ce299a602a7d56db1e507a
---
M fe/src/main/java/org/apache/impala/analysis/ComputeStatsStmt.java
M fe/src/test/java/org/apache/impala/catalog/PartialCatalogInfoTest.java
M fe/src/test/java/org/apache/impala/catalog/local/LocalCatalogTest.java
M testdata/workloads/functional-planner/queries/PlannerTest/subquery-rewrite.test
M testdata/workloads/functional-query/queries/QueryTest/alter-table-set-column-stats.test
M testdata/workloads/functional-query/queries/QueryTest/alter-table.test
M testdata/workloads/functional-query/queries/QueryTest/compute-stats-decimal.test
M testdata/workloads/functional-query/queries/QueryTest/compute-stats-incremental.test
M testdata/workloads/functional-query/queries/QueryTest/compute-stats-keywords.test
M testdata/workloads/functional-query/queries/QueryTest/compute-stats.test
M testdata/workloads/functional-query/queries/QueryTest/hbase-compute-stats-incremental.test
M testdata/workloads/functional-query/queries/QueryTest/hbase-compute-stats.test
M testdata/workloads/functional-query/queries/QueryTest/show-stats.test
13 files changed, 1,291 insertions(+), 1,306 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/65/11565/6
-- 
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Ic68f8b4c3756eb1980ce299a602a7d56db1e507a
Gerrit-Change-Number: 11565
Gerrit-PatchSet: 6
Gerrit-Owner: Anonymous Coward <pi...@gmail.com>
Gerrit-Reviewer: Anonymous Coward <pi...@gmail.com>
Gerrit-Reviewer: Bharath Vissapragada <bh...@cloudera.com>
Gerrit-Reviewer: Impala Public Jenkins <im...@cloudera.com>
Gerrit-Reviewer: Paul Rogers <pa...@yahoo.com>
Gerrit-Reviewer: Tim Armstrong <ta...@cloudera.com>
Gerrit-Reviewer: Vuk Ercegovac <ve...@cloudera.com>