> before the particular one.
>
>
> On Mon, Jan 21, 2013 at 4:22 AM, Michael Segel >wrote:
>
> > If its the same class and its not a patch, then the first class loaded
> > wins.
> >
> > So if you have a Class Foo and HBase has a Class Foo, your code will
&g
class loaded
> wins.
>
> So if you have a Class Foo and HBase has a Class Foo, your code will never
> see the light of day.
>
> Perhaps I'm stating the obvious but its something to think about when
> working w Hadoop.
>
> On Jan 19, 2013, at 3:36 AM, Eugeny Moroz
ter filter's
getHint method) know exactly where to go?
On Sat, Jan 19, 2013 at 5:16 PM, Ted wrote:
> In your original email you said the first key looked like start key of a
> region, can you verify that ?
>
> Thanks
>
> On Jan 19, 2013, at 1:36 AM, Eugeny Morozov
> wrot
3:56 AM, Ted Yu wrote:
> To my knowledge CDH-4.1.2 is based on HBase 0.92.x
>
> Looks like you were using patch from HBASE-6509 which was integrated to
> trunk only.
> Please confirm.
>
> Copying Alex who wrote the patch.
>
> Cheers
>
> On Fri, Jan 18, 2013 at
Hi, folks!
HBase, Hadoop, etc version is CDH-4.1.2
I'm using custom FuzzyRowFilter, which I get from
http://blog.sematext.com/2012/08/09/consider-using-fuzzyrowfilter-when-in-need-for-secondary-indexes-in-hbase/and
suddenly after quite a time we found that it starts loosing data.
Basically the i
looks like it's enough
to get contention =)
On Thu, Dec 20, 2012 at 10:51 PM, lars hofhansl wrote:
> Cool.
>
> You probably made it less likely that your scanners will scan the same
> HFile in parallel.
>
> -- Lars
>
>
>
> ________
wrote:
> You might have run into HBASE-7336.
> (Not available in any official release, yet)
>
> If you're using 0.94 (and probably 0.92) you can just apply this patch
> (it's save and simple).
>
>
>
>
> From: Eugeny Morozov
&
Hello!
We faced an issue recently that the more map tasks are completed, the
longer it takes to complete one more map task.
In our architecture we have two scanners to read the table. The first one,
which is called 'outer' scanner is reading table and filter some rowkeys.
These rowkeys are used a
Anil,
you could've also get some benefit from using HBaseTestingUtility. It is
able to run HBase cluster in standalone mode all-in-one JVM. Of course it
requires to have some code to create tables, assign coprocessor to table
and populate it with data. And then run client code against it.
All of
Chris,
In this case nothing scared actually happens.
* If partitions are the same, then HBase simply copies all your HFiles
during bulkloading procedure.
* If partitions are changed, then it still copies them, but in addition,
some of these files (according to number of split regions) would be al
I'd suggest to think about manual major compactions and splits. Using
manual compactions and bulkload allows to split HFiles manually. Like if
you would like to read last 3 months more often that all others data, then
you could have three HFiles for each month and one HFile for whole other
stuff. U
Hi!
Sure, you do, but don't forget to sort all KV pairs before put them into
context. Or else you'd get some "unsorted" expection.
If you have them completely the same and you need to reduce number of same
lines you could use Combiner, but their behavior is not deterministic, so
basically there i
; That is why I want to do some management of regions to get better load
> balance based on large queries.
>
> Hope it makes sense to you.
>
> Best Wishes
> Dan Han
>
>
> On Wed, Sep 26, 2012 at 3:19 PM, Eugeny Morozov
> wrote:
>
> > Dan,
> >
> > I have
Dan,
I have additional questions.
What is the access pattern of your queries? I mean that f.e. PrefixFilters
have to be applied for all KeyValue pairs in HFiles, which could be slow.
Or f.e. scanner setCaching option is able to decrease number of network
hops to get data from RegionServer.
Additi
Hi, Elazar,
I've found that MRUnit is pretty convenient way to test MR jobs.
On the other hand there is HBaseTestingUtility, which is helpful to run
miniCluster.
Hope this helps.
On Mon, Sep 24, 2012 at 8:43 PM, Elazar Leibovich wrote:
> Is there a way similar to miniserver to test map reduce
n a public web server.
>
> I don't have much to contribute except than to point to a recent
> conversation that you can find here:
> http://comments.gmane.org/gmane.comp.java.hadoop.hbase.user/28722
>
> Hope this helps,
>
> J-D
>
> On Fri, Sep 21, 2012 at 5:03 AM
Hello!
It is known and I saw it in the code that time range set by
scan.setTimeRange is used to filter out HFiles for further scan.
Which means that speed of following scanner.next must be almost zero in
case if I set time range far away in future. I am sure that I do not have
HFiles that fall int
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