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https://issues.apache.org/jira/browse/HIVE-3904?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Phabricator updated HIVE-3904:
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Attachment: HIVE-3904.D7959.1.patch
navis requested code review of "HIVE-3904 [jira] Replace hashmaps in
JoinOperators to array".
Reviewers: JIRA
DPAL-1960 Replace maps in JoinOperators to array
Join operator has many HashMaps that maps tag to some internal
value(ExprEvals, OIs, etc.) and theses are accessed 5 or more times per an
object, which is seemed unnecessary overhead.
TEST PLAN
EMPTY
REVISION DETAIL
https://reviews.facebook.net/D7959
AFFECTED FILES
ql/src/java/org/apache/hadoop/hive/ql/exec/AbstractMapJoinOperator.java
ql/src/java/org/apache/hadoop/hive/ql/exec/CommonJoinOperator.java
ql/src/java/org/apache/hadoop/hive/ql/exec/HashTableSinkOperator.java
ql/src/java/org/apache/hadoop/hive/ql/exec/JoinOperator.java
ql/src/java/org/apache/hadoop/hive/ql/exec/JoinUtil.java
ql/src/java/org/apache/hadoop/hive/ql/exec/MapJoinOperator.java
ql/src/java/org/apache/hadoop/hive/ql/exec/SMBMapJoinOperator.java
ql/src/java/org/apache/hadoop/hive/ql/exec/SkewJoinHandler.java
ql/src/java/org/apache/hadoop/hive/ql/plan/JoinDesc.java
MANAGE HERALD DIFFERENTIAL RULES
https://reviews.facebook.net/herald/view/differential/
WHY DID I GET THIS EMAIL?
https://reviews.facebook.net/herald/transcript/19161/
To: JIRA, navis
> Replace hashmaps in JoinOperators to array
> ------------------------------------------
>
> Key: HIVE-3904
> URL: https://issues.apache.org/jira/browse/HIVE-3904
> Project: Hive
> Issue Type: Improvement
> Components: Query Processor
> Reporter: Navis
> Assignee: Navis
> Priority: Trivial
> Attachments: HIVE-3904.D7959.1.patch
>
>
> Join operator has many HashMaps that maps tag to some internal
> value(ExprEvals, OIs, etc.) and theses are accessed 5 or more times per an
> object, which is seemed unnecessary overhead.
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