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https://issues.apache.org/jira/browse/BOOKKEEPER-592?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13659244#comment-13659244
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Hadoop QA commented on BOOKKEEPER-592:
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Testing JIRA BOOKKEEPER-592
Patch
[BOOKKEEPER-592.patch|https://issues.apache.org/jira/secure/attachment/12583428/BOOKKEEPER-592.patch]
downloaded at Thu May 16 04:55:43 UTC 2013
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{color:green}+1 PATCH_APPLIES{color}
{color:green}+1 CLEAN{color}
{color:red}-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:red}-1{color} the patch contains 2 line(s) longer than 120
characters
. {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: 848
. Tests failed: 0
. Tests errors: 2
. The patch failed the following testcases:
.
{color:green}+1 DISTRO{color}
. {color:green}+1{color} distro tarball builds with the patch
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{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/341/
> allow application to recommend ledger data locality
> ---------------------------------------------------
>
> Key: BOOKKEEPER-592
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-592
> Project: Bookkeeper
> Issue Type: Improvement
> Reporter: Ming Ma
> Assignee: Sijie Guo
> Fix For: 4.3.0
>
> Attachments: BOOKKEEPER-592.patch
>
>
> For application like hbase WAL, it will be useful if application like hbase
> can give a hint to bk about application's preferred ledger location. In that
> way, application can fail over to specific machines where one of the ledger
> replica is located; the recovery time will be faster. Another scenario is
> hbase's support for hot standby region server where read request can be
> served from a different machine other than the active region server. That
> requires the hot standby region server to read from ledger. If the ledger is
> on the same machine as standby region server, the performance will be better.
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