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https://issues.apache.org/jira/browse/KAFKA-1646?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14504171#comment-14504171
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Honghai Chen commented on KAFKA-1646:
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Added KIP here and send out the email, will wait for 2 days to see if there is
any issue.
https://cwiki.apache.org/confluence/display/KAFKA/KIP-20+-+Enable+log+preallocate+to+improve+consume+performance+under+windows+and+some+old+Linux+file+system
http://mail-archives.apache.org/mod_mbox/kafka-dev/201504.mbox/%3Cb1f1db2cb51645f6b459c252abae6641%40HKNPR30MB018.064d.mgd.msft.net%3E
> Improve consumer read performance for Windows
> ---------------------------------------------
>
> Key: KAFKA-1646
> URL: https://issues.apache.org/jira/browse/KAFKA-1646
> Project: Kafka
> Issue Type: Improvement
> Components: log
> Affects Versions: 0.8.1.1
> Environment: Windows
> Reporter: xueqiang wang
> Assignee: xueqiang wang
> Labels: newbie, patch
> Attachments: Improve consumer read performance for Windows.patch,
> KAFKA-1646-truncate-off-trailing-zeros-on-broker-restart-if-bro.patch,
> KAFKA-1646.patch, KAFKA-1646_20141216_163008.patch,
> KAFKA-1646_20150306_005526.patch, KAFKA-1646_20150312_200352.patch,
> KAFKA-1646_20150414_035415.patch, KAFKA-1646_20150414_184503.patch
>
>
> This patch is for Window platform only. In Windows platform, if there are
> more than one replicas writing to disk, the segment log files will not be
> consistent in disk and then consumer reading performance will be dropped down
> greatly. This fix allocates more disk spaces when rolling a new segment, and
> then it will improve the consumer reading performance in NTFS file system.
> This patch doesn't affect file allocation of other filesystems, for it only
> adds statements like 'if(Os.iswindow)' or adds methods used on Windows.
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