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Hudson commented on HIVE-1694: ------------------------------ Integrated in Hive-trunk-h0.21 #949 (See [https://builds.apache.org/job/Hive-trunk-h0.21/949/]) HIVE-1694. Accelerate GROUP BY execution using indexes (Prajakta Kalmegh via jvs) jvs : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1170007 Files : * /hive/trunk/common/src/java/org/apache/hadoop/hive/conf/HiveConf.java * /hive/trunk/data/files/lineitem.txt * /hive/trunk/data/files/tbl.txt * /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/index/AggregateIndexHandler.java * /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/index/HiveIndex.java * /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/index/bitmap/BitmapIndexHandler.java * /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/index/compact/CompactIndexHandler.java * /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/metadata/Hive.java * /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/IndexUtils.java * /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/Optimizer.java * /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/index * /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/index/RewriteCanApplyCtx.java * /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/index/RewriteCanApplyProcFactory.java * /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/index/RewriteGBUsingIndex.java * /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/index/RewriteParseContextGenerator.java * /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/index/RewriteQueryUsingAggregateIndex.java * /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/index/RewriteQueryUsingAggregateIndexCtx.java * /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/physical/index/IndexWhereProcessor.java * /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/physical/index/IndexWhereTaskDispatcher.java * /hive/trunk/ql/src/test/queries/clientpositive/ql_rewrite_gbtoidx.q * /hive/trunk/ql/src/test/results/clientpositive/ql_rewrite_gbtoidx.q.out > Accelerate GROUP BY execution using indexes > ------------------------------------------- > > Key: HIVE-1694 > URL: https://issues.apache.org/jira/browse/HIVE-1694 > Project: Hive > Issue Type: New Feature > Components: Indexing, Query Processor > Affects Versions: 0.7.0 > Reporter: Nikhil Deshpande > Assignee: Prajakta Kalmegh > Fix For: 0.9.0 > > Attachments: HIVE-1694.1.patch.txt, HIVE-1694.2.patch.txt, > HIVE-1694.3.patch.txt, HIVE-1694.4.patch, HIVE-1694.5.patch, > HIVE-1694.6.patch, HIVE-1694.7.patch, HIVE-1694.7.patch, > HIVE-1694_2010-10-28.diff, demo_q1.hql, demo_q2.hql > > > The index building patch (Hive-417) is checked into trunk, this JIRA issue > tracks supporting indexes in Hive compiler & execution engine for SELECT > queries. > This is in ref. to John's comment at > https://issues.apache.org/jira/browse/HIVE-417?focusedCommentId=12884869&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#action_12884869 > on creating separate JIRA issue for tracking index usage in optimizer & query > execution. > The aim of this effort is to use indexes to accelerate query execution (for > certain class of queries). E.g. > - Filters and range scans (already being worked on by He Yongqiang as part of > HIVE-417?) > - Joins (index based joins) > - Group By, Order By and other misc cases > The proposal is multi-step: > 1. Building index based operators, compiler and execution engine changes > 2. Optimizer enhancements (e.g. cost-based optimizer to compare and choose > between index scans, full table scans etc.) > This JIRA initially focuses on the first step. This JIRA is expected to hold > the information about index based plans & operator implementations for above > mentioned cases. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira