Thanks for quick response
That was a silly mistake. Sorry about that. But now I get the following
error
Exception in thread "main" java.lang.NoClassDefFoundError:
com/google/common/collect/Multimap
at org.apache.hadoop.hbase.mapreduce.Driver.main(Driver.java:43)
at sun.reflect.Nat
Use ./hadoop jar /usr/local/hbase-0.92.1-security/hbase-0.92.1-security.jar
rowcounter
Thanks & Regards,
Gopinathan A
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This e-mail and attachments contain confidential information from HUAWEI,
which is intend
Thanks Doug. I have gone through this and theoretically kind of understood
it. But after setting up the cluster, I was not able to make out that where
is RegionServer and where I can find that.
Would really seek help in future from you guys.Thanks a lot!!
Doug Meil-2 wrote:
>
>
> Hi there-
>
Thanks Ram!!
So, there are 3 datanodes in the cluster. Is there any way to find out that
whether these datanodes are served by one RegionServer or more? where can we
see that?
Thanks again..
Ramkrishna.S.Vasudevan wrote:
>
> See response inline.
>
>> -Original Message-
>> From: AnExplo
Oh! Nice! I really like the secondary index approach. A bit manual,
but at least I can tweak it the way I want...
Thanks for the reply!
Seems that I will have to read again the section about the timestamp
because it might be very helpful for me.
Regarding the key, for me it's a MD5 of a long str
Thanks Alan.
I was not sure what "row1" on the example was for... So I will go that
way. And the example is perfect this it will be done in Java too.
Usually I'm inserting about 40 000 rows at a time. Should I do 40 000
calls to put? Or is there any "bulkinsert" method?
2012/6/12, Alan Chaney :
Hi Jean-Marc,
I reply in your text.
Le 12/06/2012 23:42, Jean-Marc Spaggiari a écrit :
> Hi,
>
> I have read all the documentation here
> http://hbase.apache.org/book/book.html and I now have few questions.
>
> I currently have a mysql table with millions of lines (4 for now, but
> it's growing b
On 6/12/2012 2:42 PM, Jean-Marc Spaggiari wrote:
Here is what the table looks like:
+--+--+--+-+-+---+
| Field| Type | Null | Key | Default | Extra |
+--+--+--+-+-+---+
| IDLow| bigint(
Hi,
I have read all the documentation here
http://hbase.apache.org/book/book.html and I now have few questions.
I currently have a mysql table with millions of lines (4 for now, but
it's growing by 4 millions a month). It's running on a fast computer,
but it's still way to slow when it's time to
?Inferred sigh of despair? Was it that obvious? :-)
I'm not sure what hardware you're running on so its hard to say.
Here's the problem... On each DN, you're running a DN and a RS. Assuming that
you're not going to run a TT or do any M/R to push/pull data in and out of
HBase.
You don't have
Hey guys,
I had a similar problem a week ago and could not solve the problem in a clean
way.
I restarted the master and region servers so everything could work again.
As Ram said, I think the best solution is to update HBase, which is not very
easy but
still the best option we found.
Regards,
P
Using the API to create the splits worked. The data is now evenly spread
across all the regions.
However every time I tried to create a table the HBase master crashed. I
used the class listed here http://pastebin.com/i1yFVEwj as follows:
./hbase CreateTable
The table gets created but HBase maste
As one picture could give more than thousand words...check out the first figure
on
http://www.larsgeorge.com/search?q=HBase+Architecture
It's the best figure I know to understand how Hadoop(here HDFS) and HBase are
related to each other.
Von: AnExplorer
No, this isn't on EC2 and yes, its (supposed to be) production. Please
elaboration on your inferred sigh of dispair
On 12 June 2012 15:48, Michael Segel wrote:
> Ok...
>
> Please tell me that this isn't a production system.
>
> Is this on EC2?
>
> On Jun 12, 2012, at 6:55 AM, Simon Kelly wro
Ok...
Please tell me that this isn't a production system.
Is this on EC2?
On Jun 12, 2012, at 6:55 AM, Simon Kelly wrote:
> Thanks Michael
>
> I'm 100% sure its not the UUID distribution that's causing the problem. I'm
> going to try us the API to create the table and see if that changes thi
Hi Shashwat,
I just figured that my issue already got addressed on this list:
http://www.mail-archive.com/user@hbase.apache.org/msg12722.html
It seems to be related to IPV6 configuration. So I disabled it.
Regarding SSH, it's working passwordless as requested with both
localhost and the host name
Did you configure ssh?? if yes check if you can ssh
what is your computer name you can get it using hostname at terminal. it
should give you the name you are specifying the hosts file.
On Tue, Jun 12, 2012 at 5:57 PM, Jean-Marc Spaggiari <
jean-m...@spaggiari.org> wrote:
> Hi,
>
> I'm new on HB
Hi there-
You probably should at least read this part of the RefGuide for an introŠ
http://hbase.apache.org/book.html#architecture
Š welcome to HBase!
On 6/12/12 5:48 AM, "AnExplorer" wrote:
>
>Hi..I am new to Hbase. Can anyone please suggest that one HRegionServer
>means
>one DataNode? C
Hi,
I'm new on HBase and I'm trying to follow the "Quick Start" steps, but
I'm facing some issues.
I read a bit more of the documentation, and tried to update my hosts
file but it's still not working.
It seems the server is started, but it's not able to reach himself.
Here is my hostfile:
phen
Thanks Michael
I'm 100% sure its not the UUID distribution that's causing the problem. I'm
going to try us the API to create the table and see if that changes things.
The reason I want to pre-split the table is that HBase doesn't handle the
initial load to a single regionserver and I can't start
See response inline.
> -Original Message-
> From: AnExplorer [mailto:satishtha...@gmail.com]
> Sent: Tuesday, June 12, 2012 5:05 PM
> To: hbase-u...@hadoop.apache.org
> Subject: RE: one HRegionServer means one DataNode?
>
>
> Thanks for the response Ram!! It is pretty much clear to me no
Ok,
Now that I'm awake, and am drinking my first cup of joe...
If you just generate UUIDs you are not going to have an even distribution.
Nor are they going to be truly random due to how the machines are generating
their random numbers.
But this is not important in solving your problem
Th
Thanks for the response Ram!! It is pretty much clear to me now that
RegionServers are part of HBase and Datanodes are part of HDFS. Actually I
have a query - I had setup a hadoop cluster with one master and 3 slaves.
Are these three slaves called RegionServer? And if yes How many data nodes
are t
Hi Simon,
I might be wrong but I'm pretty sure the splits file you specify is assumed to
be full of strings. So even though they look like bytes they're being
interpreted as the string value (like '\x00') instead of the actual byte \x00.
The only way I could get the byte representation of int
Hi Pradeep,
Many changes have happened from the version that you are specifying upto the
recent version. So may be you can try out latest versions.
Regards
Ram
> -Original Message-
> From: Pradeep Gopaluni [mailto:pradeep.gopal...@gmail.com]
> Sent: Tuesday, June 12, 2012 4:35 PM
> To:
Hi,
We are using HBASE 0.90.3 and Hadoop 0.20.205 for our cluster. Today, we
have observed that the HBASE master was stuck because of zombie
regionservers that was responding to ping but was stuck.
The logs show that the master tried to re-assign its regions from an
overloaded (ServerA) and one
Hi
Region Server is not DataNode.
DataNodes are part of HDFS. RegionServers are part of HBase. HBase uses
HDFS to store data and in the process of storing data DataNodes are used by
HDFS. DataNodes are the actual machines where the data resides.
Regards
Ram
> -Original Message-
> F
Hi..I am new to Hbase. Can anyone please suggest that one HRegionServer means
one DataNode? Can there be multiple data nodes in one
HRegionServer??:confused:
--
View this message in context:
http://old.nabble.com/one-HRegionServer-means-one-DataNode--tp33998720p33998720.html
Sent from the HBase
Hello,
I'm a bit stuck repairing a faulty table (on Hbase 0.92.1-cdh4.0.0, Hadoop
2.0.0-cdh4.0.0)
There is a region in transition that doesn't finish:
Region State
bf2025f4bc154914b5942af4e72ea063
counter_traces,1329773878.35_766a0b4df75e4381a686fbc07db9e333,1339425291230.bf2025f4bc154914b5
Yes, I'm aware that UUID's are designed to be unique and not evenly
distributed but I wouldn't expect a big gap in their distribution either.
The other thing that is really confusing me is that the regions splits
aren't lexicographical sorted. Perhaps there is a problem with the way I'm
specifying
UUIDs are unique but not necessarily random and even in random samplings, you
may not see an even distribution except over time.
Sent from my iPhone
On Jun 12, 2012, at 3:18 AM, "Simon Kelly" wrote:
> Hi
>
> I'm getting some unexpected results with a pre-split table where some of
> the regio
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