[
https://issues.apache.org/jira/browse/HBASE-2946?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12924751#action_12924751
]
HBase Review Board commented on HBASE-2946:
-------------------------------------------
Message from: "Jonathan Gray" <[email protected]>
-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
http://review.cloudera.org/r/1088/
-----------------------------------------------------------
(Updated 2010-10-25 15:06:49.931026)
Review request for hbase, stack and khemani.
Changes
-------
Changes from Ryan and Prakash reviews.
We could use a nice test of this concurrent w/ snapshotting, flushing, etc... I
don't have much time to do that now but would like to get this committed. It
works in general and does not change anything in the existing
incrementColumnValue call, it's only the Increment that skips the snapshot
check.
Trying to get this committed so we can push it out to some clusters and start
hammering it.
Summary
-------
Adds a new Increment class that allows multiple columns (each w/ own increment
amount) in a single row being incremented in one call.
The big wins here are being able to do multiple columns in a row in a single
RPC and having it be appended/synced to the WAL in a single call.
The current trade-off is that you lose atomicity to readers (ie. this does not
currently use RWCC). Eventually it could but for the current use case I am
building this for, it's okay like this.
This addresses bug HBASE-2946.
http://issues.apache.org/jira/browse/HBASE-2946
Diffs (updated)
-----
trunk/src/main/java/org/apache/hadoop/hbase/client/HTable.java 1026935
trunk/src/main/java/org/apache/hadoop/hbase/client/HTableInterface.java
1026935
trunk/src/main/java/org/apache/hadoop/hbase/client/Increment.java
PRE-CREATION
trunk/src/main/java/org/apache/hadoop/hbase/io/HbaseObjectWritable.java
1026935
trunk/src/main/java/org/apache/hadoop/hbase/ipc/HRegionInterface.java 1026935
trunk/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java 1026935
trunk/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
1026935
trunk/src/main/java/org/apache/hadoop/hbase/regionserver/MemStore.java
1026935
trunk/src/main/java/org/apache/hadoop/hbase/regionserver/Store.java 1026935
trunk/src/main/java/org/apache/hadoop/hbase/rest/client/RemoteHTable.java
1026935
trunk/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSide.java
1026935
Diff: http://review.cloudera.org/r/1088/diff
Testing
-------
Added TestFromClientSide.testIncrement() which adds some client-side tests of
Increment (and mixing w/ original icv call). That passes and most the way
through a test suite run.
Thanks,
Jonathan
> Increment multiple columns in a row at once
> -------------------------------------------
>
> Key: HBASE-2946
> URL: https://issues.apache.org/jira/browse/HBASE-2946
> Project: HBase
> Issue Type: New Feature
> Components: client, regionserver
> Reporter: Jonathan Gray
> Assignee: Jonathan Gray
>
> Currently there is no way to do multiple increments to a single row in one
> RPC. This jira is about adding an HTable and HRegionInterface method to
> increment multiple columns within a single row at once.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
