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From "Phil Yang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16505) Add AsyncRegion interface to pass deadline and support async operations
Date Fri, 02 Sep 2016 03:33:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15457388#comment-15457388

Phil Yang commented on HBASE-16505:

In the first step, we may not use new thread. We may just use the interface like this:
asyncRegion.get(context, get);
The first line is still blocking, and second line will return the result immediately. The
only goal is pass a context with deadline for HBASE-16492.

The reason to change the interface to async( instead of add a context first and then change
it to async) is to prevent changing it another time. The interface is important so we may
reduce the time of changing.

In the second step, we can make it truly non-blocking, we not only do the get logic in another
thread pool, but also use another thread pool to getResult and send response to client.

> Add AsyncRegion interface to pass deadline and support async operations
> -----------------------------------------------------------------------
>                 Key: HBASE-16505
>                 URL: https://issues.apache.org/jira/browse/HBASE-16505
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Phil Yang
>            Assignee: Phil Yang
>         Attachments: HBASE-16505-v1.patch
> If we want to know the correct setting of timeout in read/write path, we need add a new
parameter in operation-methods of Region.

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