GitHub user redbaron opened a pull request:
https://github.com/apache/kafka/pull/43
Finer locking in log append
This patch adds finer locking when appending to log. It breaks
global append lock into 2 sequential and 1 parallel phase.
Basic idea is to allow every thread to "reserve" offsets in non
overlapping ranges, then do compression in parallel and then
"commit" write to log in the same order offsets where reserved.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/redbaron/kafka finer-lock-in-log-append
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/43.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 #43
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commit e1e4cf6685e3b5ca7900635a11a8a0be80a569a5
Author: Maxim Ivanov <ivanov.ma...@gmail.com>
Date: 2015-02-08T18:41:06Z
Finer locking in log append
This patch adds finer locking when appending to log. It breaks
global append lock into 2 sequential and 1 parallel phase.
Basic idea is to allow every thread to "reserve" offsets in non
overlapping ranges, then do compression in parallel and then
"commit" write to log in the same order offsets where reserved.
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