...@gmail.com
To: user user@hbase.apache.org,
Date: 04/27/2013 10:31 AM
Subject:Re: checkAnd...
found the checkAndIncrement Jira -
HBASE-6712https://issues.apache.org/jira/browse/HBASE-6712
.
Would be nice to have also checkandAppend.
Any ideas how to solve to the use case I
How about this one : https://issues.apache.org/jira/browse/HBASE-8542
Best Regards,
Raymond Liu
-Original Message-
From: Lior Schachter [mailto:lior...@gmail.com]
Sent: Thursday, May 16, 2013 1:18 AM
To: user
Subject: Re: checkAnd...
yes, I believe this will cover most
Why not go whole hog and create checkAndMultiMutate (for all varieties of
mutation) (all on the same row)?
Thanks,
Mike
From: Lior Schachter lior...@gmail.com
To: user user@hbase.apache.org,
Date: 04/27/2013 10:31 AM
Subject:Re: checkAnd...
found the checkAndIncrement Jira
Hi,
We have a simple HBase schema:
row key = subscriber id.
Column family A = counters - all kinds of aggregations.
Events records have a UUID, in some scenarios we might get duplicate
events. We should not count the duplicates.
A possible solution was to keep event ids as qualifiers in another
Yep.
You can write a RegionObserver which take all event qualifiers with a time
stamp larger than a certain grace period, sum it up, add it to the current
value of the Count qualifier and emits an updated Count qualifier.
I wrote something very similar for us at Akamai and it improved throughput
Take a look at the following method in HRegionServer:
public boolean checkAndPut(final byte[] regionName, final byte[] row,
final byte[] family, final byte[] qualifier, final byte[] value,
final Put put) throws IOException {
You can create checkAndIncrement() in a similar way.
Hi Ted,
Thanks for the prompt response.
I've already had a look at HRegionServer.checkAndPut and the implementation
looks quite straight forward.
That's why I was wondering why the other 2 methods are not available...or
planned (couldn't find Jira).
Seems like a useful functionality.
Anyhow, I'm
Hi Ted,
Will it be a good idea to add it? Should we open a JIRA and implement
checkANDIncrement? Might be pretty simple.
JM
2013/4/27 Ted Yu yuzhih...@gmail.com:
Take a look at the following method in HRegionServer:
public boolean checkAndPut(final byte[] regionName, final byte[] row,
found the checkAndIncrement Jira -
HBASE-6712https://issues.apache.org/jira/browse/HBASE-6712
.
Would be nice to have also checkandAppend.
Any ideas how to solve to the use case I described ?
On Sat, Apr 27, 2013 at 4:46 PM, Jean-Marc Spaggiari
jean-m...@spaggiari.org wrote:
Hi Ted,
Will
It would be nice to know a bit more about your schema.
How many tables do you use in the scenario you described ? One for user
(counter), one for event ? Or just one table for all related information ?
bq. to have an event_id qualifier for each incoming event
Would you store the event_id
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