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https://issues.apache.org/jira/browse/KAFKA-4734?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15852646#comment-15852646
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ASF GitHub Bot commented on KAFKA-4734:
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GitHub user becketqin opened a pull request:
https://github.com/apache/kafka/pull/2501
KAFKA-4734; Trim the time index on old segments
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/becketqin/kafka KAFKA-4734
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/2501.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 #2501
----
commit c77900a66ab9464f54fdb828299d57589e7939bd
Author: Jiangjie Qin <[email protected]>
Date: 2017-02-04T06:39:00Z
KAFKA-4734; Trim the time index on old segments
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> timeindex on old segments not trimmed to actual size
> -----------------------------------------------------
>
> Key: KAFKA-4734
> URL: https://issues.apache.org/jira/browse/KAFKA-4734
> Project: Kafka
> Issue Type: Improvement
> Affects Versions: 0.10.1.0
> Reporter: Jun Rao
> Assignee: Jiangjie Qin
>
> When upgrading from 0.9.0 to 0.10.1, the broker creates empty .timeindex
> files on old log segments without trimming them. So, on disk, you will see
> .timeindex files with preallocated size.
> -rw-r--r-- 1 junrao wheel 10485756 Feb 3 15:15
> 00000000000000000000.timeindex
> -rw-r--r-- 1 junrao wheel 10485756 Feb 3 15:15
> 00000000000000000960.timeindex
> -rw-r--r-- 1 junrao wheel 10485756 Feb 3 15:15
> 00000000000000001920.timeindex
> -rw-r--r-- 1 junrao wheel 10485756 Feb 3 15:15
> 00000000000000002880.timeindex
> -rw-r--r-- 1 junrao wheel 10485756 Feb 3 15:15
> 00000000000000003840.timeindex
> -rw-r--r-- 1 junrao wheel 10485760 Feb 3 15:15 00000000000000004800.index
> -rw-r--r-- 1 junrao wheel 10485756 Feb 3 15:15
> 00000000000000004800.timeindex
> If the broker is restarted again, all .timeindex files (except for the one on
> the active segment) are trimmed to 0 size. It would be better if we do that
> in the first place.
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