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https://issues.apache.org/jira/browse/HBASE-15921?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15509525#comment-15509525
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Duo Zhang commented on HBASE-15921:
-----------------------------------

https://github.com/Apache9/hbase/blob/asynclocator/hbase-client/src/main/java/org/apache/hadoop/hbase/client/async/ZKAsyncRegistry.java

The async zookeeper registry, based on curator.

As the current locateRegionInMeta uses reversed scan, I think we need to find a 
slow but simple way to implement it first. Otherwise we need to implement 
asynchronous scan even if we only want to implement a AsyncTable with only get 
operation support...

Thanks.

> Add first AsyncTable impl and create TableImpl based on it
> ----------------------------------------------------------
>
>                 Key: HBASE-15921
>                 URL: https://issues.apache.org/jira/browse/HBASE-15921
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Jurriaan Mous
>            Assignee: Jurriaan Mous
>         Attachments: HBASE-15921.demo.patch, HBASE-15921.patch, 
> HBASE-15921.v1.patch
>
>
> First we create an AsyncTable interface with implementation without the Scan 
> functionality. Those will land in a separate patch since they need a refactor 
> of existing scans.
> Also added is a new TableImpl to replace HTable. It uses the AsyncTableImpl 
> internally and should be a bit faster because it does jump through less hoops 
> to do ProtoBuf transportation. This way we can run all existing tests on the 
> AsyncTableImpl to guarantee its quality.



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