Alex Behm has uploaded a new patch set (#4).

Change subject: IMPALA-4270: Gracefully fail unsupported queries with mt_dop > 
0.
......................................................................

IMPALA-4270: Gracefully fail unsupported queries with mt_dop > 0.

MT_DOP > 0 is only supported for plans without distributed joins
or table sinks. Adds validation to fail unsupported queries
gracefully in planning.

For scans in queries that are executable with MT_DOP > 0 we either
use the optimized MT scan node BE implementation (only Parquet), or
we use the conventional scan node with num_scanner_threads=1.

TODO: Still need to add end-to-end tests.

Change-Id: I91a60ea7b6e3ae4ee44be856615ddd3cd0af476d
---
M be/src/exec/exec-node.cc
M common/thrift/PlanNodes.thrift
M fe/src/main/java/org/apache/impala/analysis/Analyzer.java
M fe/src/main/java/org/apache/impala/planner/HdfsScanNode.java
M fe/src/main/java/org/apache/impala/planner/Planner.java
M fe/src/main/java/org/apache/impala/planner/PlannerContext.java
M fe/src/main/java/org/apache/impala/planner/SingleNodePlanner.java
M fe/src/test/java/org/apache/impala/planner/PlannerTest.java
M fe/src/test/java/org/apache/impala/planner/PlannerTestBase.java
A 
testdata/workloads/functional-planner/queries/PlannerTest/mt-dop-validation.test
10 files changed, 308 insertions(+), 33 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/77/4677/4
-- 
To view, visit http://gerrit.cloudera.org:8080/4677
To unsubscribe, visit http://gerrit.cloudera.org:8080/settings

Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I91a60ea7b6e3ae4ee44be856615ddd3cd0af476d
Gerrit-PatchSet: 4
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Alex Behm <alex.b...@cloudera.com>
Gerrit-Reviewer: Alex Behm <alex.b...@cloudera.com>
Gerrit-Reviewer: Marcel Kornacker <mar...@cloudera.com>

Reply via email to