impala-reviews mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Dimitris Tsirogiannis (Code Review)" <ger...@cloudera.org>
Subject [Impala-ASF-CR] IMPALA-5500: Reduce catalog update topic size
Date Wed, 28 Jun 2017 20:37:34 GMT
Hello Tim Armstrong,

I'd like you to reexamine a change.  Please visit

    http://gerrit.cloudera.org:8080/7268

to look at the new patch set (#9).

Change subject: IMPALA-5500: Reduce catalog update topic size
......................................................................

IMPALA-5500: Reduce catalog update topic size

Problem: IMPALA-4029 introduced the use of the flatbuffers serialization
libary for storing file and block metadata. That change reduced the
effectiveness of the Thrift compaction protocol (when
--compact_catalog_topic is used), thereby causing a 2X increase in
catalog update topic size when the compact protocol is used.

Fix: LZ4 compress the catalog topic updates before sent to the
statestore when --compact_catalog_topic is set to true.

Results: ~4X reduction in catalog update topic size

Change-Id: I2f725cd8596205e6101d5b56abf08125faa30b0a
---
M be/src/catalog/catalog-server.cc
M be/src/catalog/catalog-util.cc
M be/src/catalog/catalog-util.h
M be/src/service/impala-server.cc
A tests/custom_cluster/test_compact_catalog_updates.py
5 files changed, 136 insertions(+), 5 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/68/7268/9
-- 
To view, visit http://gerrit.cloudera.org:8080/7268
To unsubscribe, visit http://gerrit.cloudera.org:8080/settings

Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I2f725cd8596205e6101d5b56abf08125faa30b0a
Gerrit-PatchSet: 9
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Dimitris Tsirogiannis <dtsirogiannis@cloudera.com>
Gerrit-Reviewer: Alex Behm <alex.behm@cloudera.com>
Gerrit-Reviewer: Dimitris Tsirogiannis <dtsirogiannis@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <tarmstrong@cloudera.com>

Mime
View raw message