Tim Armstrong has uploaded a new patch set (#10). Change subject: IMPALA-5160: adjust spill buffer size based on planner estimates ......................................................................
IMPALA-5160: adjust spill buffer size based on planner estimates Scale down the buffer size in hash joins and hash aggregations if estimates indicate that the build side of the join is small. This greatly reduces minimum memory requirements for joins in some common cases, e.g. small dimension tables. Currently this is not plumbed through to the backend and only takes effect in planner tests. Testing: Added targeted planner tests for small/mid/large/unknown memory requirements for aggregations and joins. Change-Id: I57b5b4c528325d478c8a9b834a6bc5dedab54b5b --- M fe/src/main/java/org/apache/impala/common/RuntimeEnv.java M fe/src/main/java/org/apache/impala/planner/AggregationNode.java M fe/src/main/java/org/apache/impala/planner/AnalyticEvalNode.java M fe/src/main/java/org/apache/impala/planner/HashJoinNode.java M fe/src/main/java/org/apache/impala/planner/PlanNode.java M fe/src/main/java/org/apache/impala/planner/SortNode.java A fe/src/main/java/org/apache/impala/util/BitUtil.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/spillable-buffer-sizing.test 10 files changed, 986 insertions(+), 39 deletions(-) git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/63/6963/10 -- To view, visit http://gerrit.cloudera.org:8080/6963 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-MessageType: newpatchset Gerrit-Change-Id: I57b5b4c528325d478c8a9b834a6bc5dedab54b5b Gerrit-PatchSet: 10 Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-Owner: Tim Armstrong <[email protected]> Gerrit-Reviewer: Alex Behm <[email protected]> Gerrit-Reviewer: Dan Hecht <[email protected]> Gerrit-Reviewer: Tim Armstrong <[email protected]>
