El mié, 21-07-2010 a las 09:39 -0700, Jean-Daniel Cryans escribió:
So you would buffer edits going to the same row? Unless you have your
own write-ahead-log, you'd likely lose data on node failure.
But WRT your question, 5 cells with different timestamps is as costly
to store/query as 5
Hi,
(summarized from http://bit.ly/lilynosqlout)
slightly over a year ago, we set out on a course to investigate what content
applications would encounter in this new era where data has moved from a
liability and cost to an opportunity - if you have the infrastructure to
scale. We decided to
Congrats on making the 'PoA' release lads. Keep on doing the good stuff.
St.Ack
On Thu, Jul 22, 2010 at 3:20 AM, Steven Noels stev...@outerthought.org wrote:
Hi,
(summarized from http://bit.ly/lilynosqlout)
slightly over a year ago, we set out on a course to investigate what content
Hi Guys,
I've been doing some data insertion from HDFS to HBase and the performance
seems to be really bad. It took about 3 hours to insert 15 GB of data. The
mapreduce job is launched from one machine which grabs data from HDFS and
insert them into an HTable located at 3 other machines (1
Hi,
The situation is fairly complex and there is no super clear answer.
Here are some facts:
- Thrift requires the use of a shared-infrastructure client/server app
that is another scaling factor
- Thrift servers live a long time and thus can more effective amortize
the HTable cache across
I think you meant LeaseExpiredException.
Here the lines preceding previous log:
2010-07-22 06:50:06,856 DEBUG org.apache.hadoop.hbase.regionserver.HRegion:
Updates disabled for region, no outstanding scanners on
Yes, then you should really look at using the write buffer.
J-D
On Thu, Jul 22, 2010 at 3:22 PM, HAN LIU ha...@andrew.cmu.edu wrote:
Thanks J-D.
The only place where I create an HTable is in the constructor of my Mapper.
The constructor is called only once for each map task right?
Han
anyone able to share their experience, thoughts on the 'smallest' production
HBase cluster in operation?Thinking there may be some point in the # Nodes
scale where one transitions from/to that's silly to that's actually more
like it.
Anyone out there with a small HBase cluster in operation
Hi.
Todd and Jonathan mentioned in last HUG that there are some reliability
testing tools for HBase flying around between developers.
Could you point me where I can find them? (As far as I know Gremlins is
one of them.)
Thanks,
Mingjie
I checked time on related servers.
There wasn't significant lag.
On Thu, Jul 22, 2010 at 9:04 PM, Ted Yu yuzhih...@gmail.com wrote:
Here is the master log snippet:
http://pastebin.com/fyzSb2pv
10.201.8.208 is sjc1-hadoop4.sjc1.carrieriq.com
sjc1-hadoop0.sjc1.carrieriq.com is hadoop namenode
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