[jira] Commented: (HBASE-919) Master and Region Server should not use HTable

["stack (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12638689#action_12638689 ] 

stack commented on HBASE-919:
-----------------------------

This issue was uncovered because of way HMaster now refuses to let out the root location till all regions deployed?  HBASE-918?

Would there ever be functionality in HTable that is not in HConnectionManager regards retries or table-level manipulations that an HMaster or an HRS might exploit?


> Master and Region Server should not use HTable
> ----------------------------------------------
>
>                 Key: HBASE-919
>                 URL: https://issues.apache.org/jira/browse/HBASE-919
>             Project: Hadoop HBase
>          Issue Type: Sub-task
>          Components: master, regionserver
>    Affects Versions: 0.18.0
>            Reporter: Jim Kellerman
>            Assignee: Jim Kellerman
>            Priority: Blocker
>             Fix For: 0.18.1, 0.19.0
>
>
> The master and region servers should NEVER use a HTable. HTable is only for client side use. During cluster startup, for example, there is not enough initialized for an HTable to work in either the master or a region server.
> The master and region server should therefore only use HConnectionManager and even there should only use very basic operations like getHRegionConnection.

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