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Posted to reviews@kudu.apache.org by "Todd Lipcon (Code Review)" <ge...@cloudera.org> on 2017/01/11 09:45:54 UTC
[kudu-CR] KUDU-1751: Change default INT and BINARY encodings
Hello Adar Dembo, Kudu Jenkins,
I'd like you to reexamine a change. Please visit
http://gerrit.cloudera.org:8080/5169
to look at the new patch set (#7).
Change subject: KUDU-1751: Change default INT and BINARY encodings
......................................................................
KUDU-1751: Change default INT and BINARY encodings
* Change INT incodings to BIT_SHUFFLE
BIT_SHUFFLE is a better default than PLAIN since it's much more compact
and generally performs better.
* Change BINARY encodings to DICT_ENCODING
This is the default in Parquet, and we've seen that it's a common reason
that Kudu performs poorly. This automatically falls back to
non-dict-encoded for high-cardinality data.
Change-Id: I32db89337026eb6be13333ff450a6cb2b2862f7a
---
M src/kudu/cfile/cfile-test.cc
M src/kudu/cfile/type_encodings.cc
2 files changed, 12 insertions(+), 12 deletions(-)
git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/69/5169/7
--
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I32db89337026eb6be13333ff450a6cb2b2862f7a
Gerrit-PatchSet: 7
Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-Owner: Todd Lipcon <to...@apache.org>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Dan Burkert <da...@apache.org>
Gerrit-Reviewer: David Ribeiro Alves <dr...@apache.org>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Todd Lipcon <to...@apache.org>