[
https://issues.apache.org/jira/browse/BOOKKEEPER-429?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13809305#comment-13809305
]
Hadoop QA commented on BOOKKEEPER-429:
--------------------------------------
Testing JIRA BOOKKEEPER-429
Patch
[0001-BOOKKEEPER-429-Provide-separate-read-and-write-threa.patch|https://issues.apache.org/jira/secure/attachment/12611103/0001-BOOKKEEPER-429-Provide-separate-read-and-write-threa.patch]
downloaded at Wed Oct 30 16:12:19 UTC 2013
----------------------------
{color:green}+1 PATCH_APPLIES{color}
{color:green}+1 CLEAN{color}
{color:green}+1 RAW_PATCH_ANALYSIS{color}
. {color:green}+1{color} the patch does not introduce any @author tags
. {color:green}+1{color} the patch does not introduce any tabs
. {color:green}+1{color} the patch does not introduce any trailing spaces
. {color:green}+1{color} the patch does not introduce any line longer than
120
. {color:green}+1{color} the patch does adds/modifies 3 testcase(s)
{color:green}+1 RAT{color}
. {color:green}+1{color} the patch does not seem to introduce new RAT
warnings
{color:green}+1 JAVADOC{color}
. {color:green}+1{color} the patch does not seem to introduce new Javadoc
warnings
{color:green}+1 COMPILE{color}
. {color:green}+1{color} HEAD compiles
. {color:green}+1{color} patch compiles
. {color:green}+1{color} the patch does not seem to introduce new javac
warnings
{color:green}+1 FINDBUGS{color}
. {color:green}+1{color} the patch does not seem to introduce new Findbugs
warnings
{color:red}-1 TESTS{color}
. Tests run: 886
. Tests failed: 0
. Tests errors: 3
. The patch failed the following testcases:
.
{color:green}+1 DISTRO{color}
. {color:green}+1{color} distro tarball builds with the patch
----------------------------
{color:red}*-1 Overall result, please check the reported -1(s)*{color}
The full output of the test-patch run is available at
. https://builds.apache.org/job/bookkeeper-trunk-precommit-build/526/
> Provide separate read and write threads in the bookkeeper server
> ----------------------------------------------------------------
>
> Key: BOOKKEEPER-429
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-429
> Project: Bookkeeper
> Issue Type: Improvement
> Components: bookkeeper-server
> Affects Versions: 4.2.0
> Reporter: Aniruddha
> Assignee: Aniruddha
> Fix For: 4.3.0
>
> Attachments:
> 0001-BOOKKEEPER-429-Provide-separate-read-and-write-threa.patch,
> BK-429.patch, BOOKKEEPER-429.diff, BOOKKEEPER-429.diff
>
>
> The current bookkeeper server is single threaded. The same thread handles
> reads and writes. When reads are slow (possibly because of excessive seeks),
> add entry operations suffer in terms of latencies. Providing separate read
> and write threads helps in reducing add entry latencies and increasing
> throughput even when we're facing slow reads. Having a single read thread
> also results in low disk utilization because seeks can't be ordered
> efficiently by the OS. Multiple read threads would help in improving the read
> throughput.
> Discussion on this can be found at
> http://mail-archives.apache.org/mod_mbox/zookeeper-bookkeeper-dev/201209.mbox/%3ccaolhydqpzn-v10zynfwud_h0qzrxtmjgttx7a9eofohyyty...@mail.gmail.com%3e
> Reviewboard : https://reviews.apache.org/r/7560/
--
This message was sent by Atlassian JIRA
(v6.1#6144)
