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https://issues.apache.org/jira/browse/KAFKA-5093?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16027541#comment-16027541
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ASF GitHub Bot commented on KAFKA-5093:
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GitHub user hachikuji opened a pull request:
https://github.com/apache/kafka/pull/3160
KAFKA-5093: Avoid loading full batch data when possible when iterating
FileRecords
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/hachikuji/kafka KAFKA-5093
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/3160.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #3160
----
commit a453e37032a8e0db7dde69f2c76d22070cabe80a
Author: Jason Gustafson <ja...@confluent.io>
Date: 2017-05-27T07:56:55Z
KAFKA-5093: Avoid loading full batch data when possible when iterating
FileRecords
----
> Load only batch header when rebuilding producer ID map
> ------------------------------------------------------
>
> Key: KAFKA-5093
> URL: https://issues.apache.org/jira/browse/KAFKA-5093
> Project: Kafka
> Issue Type: Sub-task
> Reporter: Jason Gustafson
> Priority: Blocker
> Labels: exactly-once
> Fix For: 0.11.0.0
>
>
> When rebuilding the producer ID map for KIP-98, we unnecessarily load the
> full record data into memory when scanning through the log. It would be
> better to only load the batch header since it is all that is needed.
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