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https://issues.apache.org/jira/browse/HBASE-15921?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15506952#comment-15506952
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Yu Li commented on HBASE-15921:
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Well, in our implementation, we use sync call to get region location and then
issue the async call to the target RS with callback. We assume region locating
is a low-cost step and for long running client like in streaming the location
will be cached with a big chance. Makes sense?
> 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.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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