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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14960) Fallback to using default RPCControllerFactory if class cannot be loaded
Date Thu, 10 Dec 2015 06:31:10 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14960?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15050176#comment-15050176

Anoop Sam John commented on HBASE-14960:

Ya am fine.. Was just saying..  Only thing is we should document the fact that it might fall
back to def factory.. 

Only comment from my side is to have a WARN log always. (debug enabled or not )  That will
be better.

> Fallback to using default RPCControllerFactory if class cannot be loaded
> ------------------------------------------------------------------------
>                 Key: HBASE-14960
>                 URL: https://issues.apache.org/jira/browse/HBASE-14960
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Enis Soztutar
>            Assignee: Enis Soztutar
>             Fix For: 2.0.0, 1.2.0, 1.3.0
>         Attachments: hbase-14960_v1.patch, hbase-14960_v2.patch, hbase-14960_v3.patch
> In Phoenix + HBase clusters, the hbase-site.xml configuration will point to a custom
rpc controller factory which is a Phoenix-specific one to configure the priorities for index
and system catalog table. 
> However, sometimes these Phoenix-enabled clusters are used from pure-HBase client applications
resulting in ClassNotFoundExceptions in application code or MapReduce jobs. Since hbase configuration
is shared between Phoenix-clients and HBase clients, having different configurations at the
client side is hard. 
> We can instead try to load up the RPCControllerFactory from conf, and if not found, fallback
to the default one (in case this is a pure HBase client). In case Phoenix is already in the
classpath, it will work as usual. 
> This does not affect the rpc scheduler factory since it is only used at the server side.

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