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Posted to issues@hive.apache.org by "Peter Varga (Jira)" <ji...@apache.org> on 2020/07/08 10:35:00 UTC
[jira] [Assigned] (HIVE-23805) ValidReadTxnList need not be
constructed multiple times in AcidUtils::getAcidState
[ https://issues.apache.org/jira/browse/HIVE-23805?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Peter Varga reassigned HIVE-23805:
----------------------------------
Assignee: Peter Varga
> 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
>
>
> [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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