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https://issues.apache.org/jira/browse/HBASE-3584?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13188740#comment-13188740
]
[email protected] commented on HBASE-3584:
------------------------------------------------------
bq. On 2012-01-18 21:18:16, Amitanand Aiyer wrote:
bq. >
http://svn.apache.org/repos/asf/hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java,
line 4187
bq. > <https://reviews.apache.org/r/3481/diff/4/?file=68814#file68814line4187>
bq. >
bq. > @Lars: Sorry about the late question. I would like to understand the
following case.
bq. >
bq. > What if we crash in between this loop?
bq. >
bq. > Is it possible that we have persisted half the WALEdits, but not
gotten to the rest?
bq. >
bq. > I am concerned, that if that were the case (hopefully not) then on
RS restart, we will replay, a partial list of mutations from "arm".
bq. >
bq. >
bq. >
bq. >
Yes, which is why I filed, implemented, and committed HBASE-5203, which fixes
the problem for real :)
- Lars
-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/3481/#review4445
-----------------------------------------------------------
On 2012-01-13 17:11:21, Lars Hofhansl wrote:
bq.
bq. -----------------------------------------------------------
bq. This is an automatically generated e-mail. To reply, visit:
bq. https://reviews.apache.org/r/3481/
bq. -----------------------------------------------------------
bq.
bq. (Updated 2012-01-13 17:11:21)
bq.
bq.
bq. Review request for hbase.
bq.
bq.
bq. Summary
bq. -------
bq.
bq. Add API for atomic row mutations to HBase (currently Put and Delete).
bq.
bq. Client API would look like this:
bq. Delete d = new Delete(ROW);
bq. Put p = new Put(ROW);
bq. ...
bq. AtomicRowMutation arm = new AtomicRowMutation(ROW);
bq. arm.add(p);
bq. arm.add(d);
bq. myHtable.mutateAtomically(arm);
bq.
bq.
bq. This addresses bug HBASE-3584.
bq. https://issues.apache.org/jira/browse/HBASE-3584
bq.
bq.
bq. Diffs
bq. -----
bq.
bq.
http://svn.apache.org/repos/asf/hbase/trunk/src/main/java/org/apache/hadoop/hbase/client/AtomicRowMutation.java
PRE-CREATION
bq.
http://svn.apache.org/repos/asf/hbase/trunk/src/main/java/org/apache/hadoop/hbase/client/HTable.java
1231172
bq.
http://svn.apache.org/repos/asf/hbase/trunk/src/main/java/org/apache/hadoop/hbase/client/HTableInterface.java
1231172
bq.
http://svn.apache.org/repos/asf/hbase/trunk/src/main/java/org/apache/hadoop/hbase/coprocessor/CoprocessorHost.java
1231172
bq.
http://svn.apache.org/repos/asf/hbase/trunk/src/main/java/org/apache/hadoop/hbase/io/HbaseObjectWritable.java
1231172
bq.
http://svn.apache.org/repos/asf/hbase/trunk/src/main/java/org/apache/hadoop/hbase/ipc/HRegionInterface.java
1231172
bq.
http://svn.apache.org/repos/asf/hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
1231172
bq.
http://svn.apache.org/repos/asf/hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
1231172
bq.
http://svn.apache.org/repos/asf/hbase/trunk/src/main/java/org/apache/hadoop/hbase/rest/client/RemoteHTable.java
1231172
bq.
http://svn.apache.org/repos/asf/hbase/trunk/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSide.java
1231172
bq.
http://svn.apache.org/repos/asf/hbase/trunk/src/test/java/org/apache/hadoop/hbase/coprocessor/TestRegionObserverInterface.java
1231172
bq.
http://svn.apache.org/repos/asf/hbase/trunk/src/test/java/org/apache/hadoop/hbase/regionserver/TestAtomicOperation.java
1231172
bq.
bq. Diff: https://reviews.apache.org/r/3481/diff
bq.
bq.
bq. Testing
bq. -------
bq.
bq. * Simple functional test: TestFromClientSide.testAtomicRowMutation
bq. * Multithreaded stress test:
TestAtomicOperation.testAtomicMutationMultiThreads
bq. * coprocessor test: TestRegionObserverInterface.testAtomicRowMutation
bq. * manual testing
bq.
bq.
bq. Thanks,
bq.
bq. Lars
bq.
bq.
> Allow atomic put/delete in one call
> -----------------------------------
>
> Key: HBASE-3584
> URL: https://issues.apache.org/jira/browse/HBASE-3584
> Project: HBase
> Issue Type: New Feature
> Components: client, coprocessors, regionserver
> Reporter: ryan rawson
> Assignee: Lars Hofhansl
> Fix For: 0.94.0
>
> Attachments: 3584-final.txt, 3584-v1.txt, 3584-v3.txt
>
>
> Right now we have the following calls:
> put(Put)
> delete(Delete)
> increment(Increments)
> But we cannot combine all of the above in a single call, complete with a
> single row lock. It would be nice to do that.
> It would also allow us to do a CAS where we could do a put/increment if the
> check succeeded.
> -----
> Amendment:
> Since Increment does not currently support MVCC it cannot be included in an
> atomic operation.
> So this for Put and Delete only.
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