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Posted to issues@hive.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2020/07/08 10:36:00 UTC
[jira] [Work logged] (HIVE-23805) ValidReadTxnList need not be
constructed multiple times in AcidUtils::getAcidState
[ https://issues.apache.org/jira/browse/HIVE-23805?focusedWorklogId=455997&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-455997 ]
ASF GitHub Bot logged work on HIVE-23805:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 08/Jul/20 10:35
Start Date: 08/Jul/20 10:35
Worklog Time Spent: 10m
Work Description: pvargacl opened a new pull request #1224:
URL: https://github.com/apache/hive/pull/1224
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Issue Time Tracking
-------------------
Worklog Id: (was: 455997)
Remaining Estimate: 0h
Time Spent: 10m
> ValidReadTxnList need not be constructed multiple times in AcidUtils::getAcidState
> -----------------------------------------------------------------------------------
>
> Key: HIVE-23805
> URL: https://issues.apache.org/jira/browse/HIVE-23805
> Project: Hive
> Issue Type: Improvement
> Reporter: Rajesh Balamohan
> Assignee: Peter Varga
> Priority: Major
> Attachments: Screenshot 2020-07-06 at 4.53.44 PM.png
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> [https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/io/AcidUtils.java#L1273]
> [https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/io/AcidUtils.java#L1286]
>
> {code:java}
> String s = conf.get(ValidTxnList.VALID_TXNS_KEY);
>
>
> if(!Strings.isNullOrEmpty(s)) {
>
> ...
> ...
> validTxnList.readFromString(s);
>
>
> } {code}
>
>
> !Screenshot 2020-07-06 at 4.53.44 PM.png|width=610,height=621!
> AM spends good amount of CPU parsing the same validtxnlist multiple times.
>
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