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https://issues.apache.org/jira/browse/HBASE-2002?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12918234#action_12918234
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HBase Review Board commented on HBASE-2002:
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Message from: "Andrew Purtell" <[email protected]>
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src/main/java/org/apache/hadoop/hbase/client/Batch.java
<http://review.cloudera.org/r/816/#comment4956>
Could be setCause
src/main/java/org/apache/hadoop/hbase/client/Exec.java
<http://review.cloudera.org/r/816/#comment4957>
Agree, subpackage would be a pain but Javadoc can make it explicit for sure.
src/main/java/org/apache/hadoop/hbase/client/Exec.java
<http://review.cloudera.org/r/816/#comment4955>
Only one instance of a given Coprocessor class can be bound to a region at
a time.
src/main/java/org/apache/hadoop/hbase/client/ExecResult.java
<http://review.cloudera.org/r/816/#comment4958>
This is pretty generic but currently has no other use, correct.
src/main/java/org/apache/hadoop/hbase/client/Scan.java
<http://review.cloudera.org/r/816/#comment4959>
We should be getting rid of RowRange, right?
src/main/java/org/apache/hadoop/hbase/rest/client/RemoteHTable.java
<http://review.cloudera.org/r/816/#comment4960>
Good, likewise for exec() as below.
- Andrew
> Coprocessors: Client side support
> ---------------------------------
>
> Key: HBASE-2002
> URL: https://issues.apache.org/jira/browse/HBASE-2002
> Project: HBase
> Issue Type: Sub-task
> Reporter: Andrew Purtell
> Assignee: Gary Helmling
> Fix For: 0.90.0
>
>
> "High-level call interface for clients. Unlike RPC, calls addressed to rows
> or ranges of rows. Coprocessor client library resolves to actual locations.
> Calls across multiple rows automatically split into multiple parallelized
> RPCs"
> Generic multicall RPC facility which incorporates this and
> multiget/multiput/multidelete and parallel scanners.
> Group and batch RPCs by region server. Track and retry outstanding RPCs. Ride
> over region relocations.
> Support addressing by explicit region identifier or by row key or row key
> range.
> Include a facility for merging results client side.
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