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https://issues.apache.org/jira/browse/HIVE-4250?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Phabricator updated HIVE-4250:
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Attachment: HIVE-4250.D9807.1.patch
omalley requested code review of "HIVE-4250 [jira] Closing lots of
RecordWriters is slow".
Reviewers: JIRA
add threadpool for close writers
In FileSinkOperator, all of the RecordWriters are closed sequentially. For
queries with a lot of dynamic partitions this can add substantially to the task
time. For one query in particular, after processing all of the records in a few
minutes the reduces spend 15 minutes closing all of the RC files.
TEST PLAN
EMPTY
REVISION DETAIL
https://reviews.facebook.net/D9807
AFFECTED FILES
ql/src/java/org/apache/hadoop/hive/ql/exec/FileSinkOperator.java
MANAGE HERALD RULES
https://reviews.facebook.net/herald/view/differential/
WHY DID I GET THIS EMAIL?
https://reviews.facebook.net/herald/transcript/23415/
To: JIRA, omalley
> Closing lots of RecordWriters is slow
> -------------------------------------
>
> Key: HIVE-4250
> URL: https://issues.apache.org/jira/browse/HIVE-4250
> Project: Hive
> Issue Type: New Feature
> Components: Serializers/Deserializers
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Attachments: HIVE-4250.D9807.1.patch
>
>
> In FileSinkOperator, all of the RecordWriters are closed sequentially. For
> queries with a lot of dynamic partitions this can add substantially to the
> task time. For one query in particular, after processing all of the records
> in a few minutes the reduces spend 15 minutes closing all of the RC files.
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