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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-16056) Ambari support for bucket caching parameter - hbase.bucketcache.ioengine
Date Sat, 23 Apr 2016 02:25:12 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-16056?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15255053#comment-15255053
] 

Hadoop QA commented on AMBARI-16056:
------------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12800267/ambari_bucket_cache%20%281%29.diff
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:red}-1 tests included{color}.  The patch doesn't appear to include any new or modified
tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:red}-1 core tests{color}.  The test build failed in ambari-server 

Test results: https://builds.apache.org/job/Ambari-trunk-test-patch/6622//testReport/
Console output: https://builds.apache.org/job/Ambari-trunk-test-patch/6622//console

This message is automatically generated.

> 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: New Feature
>          Components: ambari-agent
>            Reporter: Nitin Verma
>              Labels: newbie, patch
>         Attachments: 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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