Wang Xixu has uploaded this change for review. ( 
http://gerrit.cloudera.org:8080/19166


Change subject: [IndexSkip][Optimization] Efficiently support predicates on 
non-prefix key components
......................................................................

[IndexSkip][Optimization] Efficiently support predicates on non-prefix key 
components

This patch implements index skip scan approach in the case when there
exists an equality predicate on any of the non-first
primary key columns.

It continues the work of https://gerrit.cloudera.org/c/10983/
See document:
https://kudu.apache.org/2018/09/26/index-skip-scan-optimization-in-kudu.html

Change-Id: Ie294dc8455e558f3d0b093eee69ec3830f5edbce
---
M src/kudu/cfile/cfile_reader.cc
M src/kudu/cfile/cfile_reader.h
M src/kudu/common/encoded_key.cc
M src/kudu/common/encoded_key.h
M src/kudu/common/partial_row.h
M src/kudu/tablet/CMakeLists.txt
M src/kudu/tablet/cfile_set.cc
M src/kudu/tablet/cfile_set.h
A src/kudu/tablet/index_skipscan-test.cc
9 files changed, 981 insertions(+), 4 deletions(-)



  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/66/19166/1
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: Ie294dc8455e558f3d0b093eee69ec3830f5edbce
Gerrit-Change-Number: 19166
Gerrit-PatchSet: 1
Gerrit-Owner: Wang Xixu <[email protected]>

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