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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-16056) Ambari support for bucket caching parameter - hbase.bucketcache.ioengine
Date Tue, 26 Apr 2016 20:51:13 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-16056?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15258899#comment-15258899
] 

Hudson commented on AMBARI-16056:
---------------------------------

SUCCESS: Integrated in Ambari-trunk-Commit #4742 (See [https://builds.apache.org/job/Ambari-trunk-Commit/4742/])
AMBARI-16056. Ambari support for bucket caching parameter - (smohanty: [http://git-wip-us.apache.org/repos/asf?p=ambari.git&a=commit&h=e6fc15dfcdab59d306ac7aef9b60770cf147f832])
* ambari-server/src/test/python/stacks/2.0.6/configs/default_with_bucket.json
* ambari-server/src/main/resources/common-services/HBASE/0.96.0.2.0/package/scripts/params_linux.py
* ambari-server/src/main/resources/common-services/HBASE/0.96.0.2.0/package/scripts/hbase.py
* ambari-server/src/test/python/stacks/2.0.6/HBASE/test_hbase_master.py


> Ambari support for bucket caching parameter - hbase.bucketcache.ioengine
> ------------------------------------------------------------------------
>
>                 Key: AMBARI-16056
>                 URL: https://issues.apache.org/jira/browse/AMBARI-16056
>             Project: Ambari
>          Issue Type: Bug
>          Components: stacks
>            Reporter: Nitin Verma
>            Assignee: Nitin Verma
>              Labels: newbie, patch
>             Fix For: 2.4.0, 2.2-next
>
>         Attachments: AMBARI-16056.patch, ambari_bucket_cache (1).diff
>
>
> In order to utilize SSD as a L2 (bucket) cache, we specify a file location to hbase.bucketcache.ioengine
parameter.
> hbase.bucketcache.ioengine=file:<filepath>
> The directory location specified to the above parameter could be non-existent or non-accessible.
> Since ambari-agent runs with root permissions, the proposed change here is to read the
'hbase.bucketcache.ioengine' parameter from hbase configuration and see if it points to a
file location (by looking at file: prefix). 
> In case ioengine points to a file, ambari-agent should create the underlying directory
and assign appropriate permissions to hbase:hadoop user.
> Activity



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