Joe McDonnell has submitted this change and it was merged. ( http://gerrit.cloudera.org:8080/13545 )
Change subject: IMPALA-8630: Hash the full path when calculating consistent remote placement ...................................................................... IMPALA-8630: Hash the full path when calculating consistent remote placement Consistent remote placement currently uses the relative filename within a partition for the consistent hash. If the relative filenames for different partitions have a simple naming scheme, then multiple partitions may have files of the same name. This is true for some tables written by Hive (e.g. in our minicluster the tpcds.store_sales has this problem). This can lead to unbalanced placement of remote ranges. This adds a partition_path_hash to the THdfsFileSplit and THdfsFileSplitGeneratorSpec, calculated in the frontend (which has all of the partition information). The scheduler hashes this in addition to the relative path. Testing: - Added several new scheduler tests that verify the consistent remote scheduling sees blocks with different relative paths, partition paths, or offsets as distinct. - Ran core tests Change-Id: I46c739fc31af539af2b3509e2a161f4e29f44d7b Reviewed-on: http://gerrit.cloudera.org:8080/13545 Reviewed-by: Joe McDonnell <joemcdonn...@cloudera.com> Tested-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com> --- M be/src/scheduling/scheduler-test-util.cc M be/src/scheduling/scheduler-test-util.h M be/src/scheduling/scheduler-test.cc M be/src/scheduling/scheduler.cc M common/thrift/PlanNodes.thrift M fe/src/main/java/org/apache/impala/planner/HdfsScanNode.java M fe/src/test/java/org/apache/impala/planner/ExplainTest.java 7 files changed, 332 insertions(+), 55 deletions(-) Approvals: Joe McDonnell: Looks good to me, approved Impala Public Jenkins: Verified -- To view, visit http://gerrit.cloudera.org:8080/13545 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: merged Gerrit-Change-Id: I46c739fc31af539af2b3509e2a161f4e29f44d7b Gerrit-Change-Number: 13545 Gerrit-PatchSet: 14 Gerrit-Owner: Joe McDonnell <joemcdonn...@cloudera.com> Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com> Gerrit-Reviewer: Joe McDonnell <joemcdonn...@cloudera.com> Gerrit-Reviewer: Lars Volker <l...@cloudera.com> Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com> Gerrit-Reviewer: Todd Lipcon <t...@apache.org>
