Rajesh Balamohan created HIVE-23805:
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Summary: 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
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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