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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18448) Added support for refreshing HFiles through API and shell
Date Fri, 28 Jul 2017 04:35:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16104438#comment-16104438
] 

Anoop Sam John commented on HBASE-18448:
----------------------------------------

I believe u can do this with out any addition to HBase code base. Adding such a public API
(which does not make much sense for most of the users) is a worrying point.
How u can do this is via CP Endpoints.  The EPs will run parallely on each of the Region instance
and u can invoke it from client side. (Pls refer AggregationClient , Aggregate.proto and related
classes.  Also pls refer BulkDeleteEP.)

Any way you are using  Store#refreshStoreFiles() API.  You can see this interface is already
exposed to CPs.  So in the EP impl (there u will get ref to Region instance) u can get stores
in that region and call this API.

See Region#getStores().

> Added support for refreshing HFiles through API and shell
> ---------------------------------------------------------
>
>                 Key: HBASE-18448
>                 URL: https://issues.apache.org/jira/browse/HBASE-18448
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 2.0.0, 1.3.1
>            Reporter: Ajay Jadhav
>            Assignee: Ajay Jadhav
>            Priority: Minor
>             Fix For: 1.4.0
>
>         Attachments: HBASE-18448.branch-1.001.patch, HBASE-18448.branch-1.002.patch
>
>
> In the case where multiple HBase clusters are sharing a common rootDir, even after flushing
the data from
> one cluster doesn't mean that other clusters (replicas) will automatically pick the new
HFile. Through this patch,
> we are exposing the refresh HFiles API which when issued from a replica will update the
in-memory file handle list
> with the newly added file.
> This allows replicas to be consistent with the data written through the primary cluster.




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