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Posted to issues@hive.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2019/04/01 17:58:05 UTC
[jira] [Work logged] (HIVE-21279) Avoid moving/rename operation in
FileSink op for SELECT queries
[ https://issues.apache.org/jira/browse/HIVE-21279?focusedWorklogId=221382&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-221382 ]
ASF GitHub Bot logged work on HIVE-21279:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 01/Apr/19 17:57
Start Date: 01/Apr/19 17:57
Worklog Time Spent: 10m
Work Description: jdere commented on pull request #582: Hive 21386: Extend the fetch task enhancement done in HIVE-21279 to make it work with query result cache
URL: https://github.com/apache/hive/pull/582#discussion_r270975672
##########
File path: ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java
##########
@@ -15072,13 +15093,13 @@ private boolean queryTypeCanUseCache() {
return false;
}
- if (qb.getParseInfo().isAnalyzeCommand()) {
- return false;
- }
+ if (qb.getParseInfo().isAnalyzeCommand()) {
Review comment:
What are these whitespace changes for? Was the nesting bad before?
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Issue Time Tracking
-------------------
Worklog Id: (was: 221382)
Time Spent: 40m (was: 0.5h)
> Avoid moving/rename operation in FileSink op for SELECT queries
> ---------------------------------------------------------------
>
> Key: HIVE-21279
> URL: https://issues.apache.org/jira/browse/HIVE-21279
> Project: Hive
> Issue Type: Improvement
> Components: Query Planning
> Reporter: Vineet Garg
> Assignee: Vineet Garg
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0
>
> Attachments: HIVE-21279.1.patch, HIVE-21279.10.patch, HIVE-21279.11.patch, HIVE-21279.12.patch, HIVE-21279.13.patch, HIVE-21279.2.patch, HIVE-21279.3.patch, HIVE-21279.4.patch, HIVE-21279.5.patch, HIVE-21279.6.patch, HIVE-21279.7.patch, HIVE-21279.8.patch, HIVE-21279.9.patch
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> Currently at the end of a job FileSink operator moves/rename temp directory to another directory from which FetchTask fetches result. This is done to avoid fetching potential partial/invalid files by failed/runway tasks. This operation is expensive for cloud storage. It could be avoided if FetchTask is passed on set of files to read from instead of whole directory.
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