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https://issues.apache.org/jira/browse/HBASE-9534?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jesse Yates updated HBASE-9534:
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Summary: Short-Circuit Coprocessor HTable writes when on the same server
(was: Short-Circuit Coprocess HTable writes when on same server)
> Short-Circuit Coprocessor HTable writes when on the same server
> ---------------------------------------------------------------
>
> Key: HBASE-9534
> URL: https://issues.apache.org/jira/browse/HBASE-9534
> Project: HBase
> Issue Type: Bug
> Reporter: Jesse Yates
> Assignee: Jesse Yates
> Labels: coprocessors, performance, regionserver
> Fix For: 0.98.0
>
> Attachments: hbase-9534-trunk-v0.patch
>
>
> Coprocessors currently create a full HTable when they want to write. However,
> we know that coprocessors must run from within an HBase server (either master
> or RS). For the master, its rare that we are going to be doing performance
> sensitive operations, but RS calls could be very time-intensive.
> Therefore, we should be able to tell when a call from a CP attempts to talk
> to the RS on which it lives and just short-circuit to calling that RS, rather
> than going the long way around (which does the full marshalling/unmarshalling
> of data, as well as going over the loopback interface).
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