Vuk Ercegovac has posted comments on this change. ( http://gerrit.cloudera.org:8080/10543 )
Change subject: IMPALA-6119: Fix issue with multiple partitions sharing same location ...................................................................... Patch Set 18: (1 comment) http://gerrit.cloudera.org:8080/#/c/10543/18/fe/src/main/java/org/apache/impala/catalog/HdfsTable.java File fe/src/main/java/org/apache/impala/catalog/HdfsTable.java: http://gerrit.cloudera.org:8080/#/c/10543/18/fe/src/main/java/org/apache/impala/catalog/HdfsTable.java@1435 PS18, Line 1435: HdfsPartition partition: partitionMap_.values() > In my opinion the insert path is the performance critical rather than the d yes, I think drop partitions complexity should be O(<num of total partitions>)... the equiv db plan you'll be using, if you want to think in those terms, is an index-nested loop where you build an index on the delete side, and probe with each partition. -- To view, visit http://gerrit.cloudera.org:8080/10543 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: comment Gerrit-Change-Id: I2a54bc8224bcefe65b83de2df58bb84629f2aa4a Gerrit-Change-Number: 10543 Gerrit-PatchSet: 18 Gerrit-Owner: Gabor Kaszab <[email protected]> Gerrit-Reviewer: Bharath Vissapragada <[email protected]> Gerrit-Reviewer: Gabor Kaszab <[email protected]> Gerrit-Reviewer: Michael Brown <[email protected]> Gerrit-Reviewer: Sailesh Mukil <[email protected]> Gerrit-Reviewer: Vuk Ercegovac <[email protected]> Gerrit-Reviewer: Zoltan Borok-Nagy <[email protected]> Gerrit-Comment-Date: Tue, 26 Jun 2018 18:11:05 +0000 Gerrit-HasComments: Yes
