You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@tez.apache.org by "Tsuyoshi Ozawa (JIRA)" <ji...@apache.org> on 2015/07/08 17:14:05 UTC
[jira] [Created] (TEZ-2605) [Umbrella] CPU optimizations for
hotspots
Tsuyoshi Ozawa created TEZ-2605:
-----------------------------------
Summary: [Umbrella] CPU optimizations for hotspots
Key: TEZ-2605
URL: https://issues.apache.org/jira/browse/TEZ-2605
Project: Apache Tez
Issue Type: Improvement
Reporter: Tsuyoshi Ozawa
There are some CPU hotpots when processing large data when IO is highly optimized:
1. Sort : memory access to compare with 2 values can be bottleneck.
2. Aggregation : hash construction for UnorderedPartitionedKVWriter can be bottleneck.
3. Filter : memory access to compare the key values with given condition.
This issue is a umbrella jira for CPU optmizations at Tez side.
Related works:
Alphasort: http://dl.acm.org/citation.cfm?id=615237
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)