Please check that you have created 'testtable' before running this program.
thanks
ashish
On Thu, Sep 22, 2011 at 12:08 PM, vamshi krishna wrote:
> Hi ,
> i am trying to cretae and write data to a table in hbase. For that i am
> using hadoop-0.20.2 and hbase -0.90.4 single machine and pseudo dis
Hi ,
i am trying to cretae and write data to a table in hbase. For that i am
using hadoop-0.20.2 and hbase -0.90.4 single machine and pseudo distributed
mode. In eclipse helios, i write on e samll program
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration
Thanks for your suggestions! I think I go the route with a custom XML
property file and using the -conf switch when starting the MR-job.
Thanks again for your support. Much appreciated!
Regards,
Thomas
-Original Message-
From: Doug Meil [mailto:doug.m...@explorysmedical.com]
Sent: Donne
On Wed, Sep 21, 2011 at 12:54 PM, Douglas Campbell wrote:
> if a family's block size is smaller than some of the keyvalues in the family,
> can those keyvalues be held in the cache?
>
A block will be size of the KV if the KV is > blocksize.
IIRC, this KV that is > blocksize will go into the bloc
The bit about 1ms ping times sounds a bit good to me but Dan below
says is better.
St.Ack
On Wed, Sep 21, 2011 at 6:21 PM, Daniel Washburn
wrote:
>
> On Sep 21, 2011, at 1:51 PM, Bogdan Ghidireac wrote:
>
>>> HBase and HDFS are not made to span datacenters.
>>
>> Yes, I know. I think the correct
On Sep 21, 2011, at 1:51 PM, Bogdan Ghidireac wrote:
>> HBase and HDFS are not made to span datacenters.
>
> Yes, I know. I think the correct terminology is 3 availability zones
> within the same region (ping between them is about 1ms)
[snip]
>>
>> Is my assumption correct? Should I open a JI
If you need to pass args to a mapper-task for example, using the
Configuration object (as Stack suggested) is a common pattern. But just
don't stick anything huge in there because that config is apparently
copied repeatedly in the MR framework.
On 9/21/11 12:09 PM, "Stack" wrote:
>On Wed,
Additionally, see this...
http://hbase.apache.org/book.html#secondary.indexes
On 9/21/11 12:00 PM, "Stack" wrote:
>Have you searched this lists' archives? A quick search on the net
>seems to turn up relevant articles. Here is an older implementation
>that you might study for ideas:
>http
Hmm... Interesting perspective. From my point of view, if you add a node to an
odd-numbered set, the reliability of the system will decrease. This is easiest
to see between 1 and 2 nodes. For 2 nodes, if either node fails the whole
system dies. P(A*B) < P(A) -- adding the second node can onl
You'd probably have more of an issue with the amount of memory on 32 bit
instance types. ~1.7gb.
On Wed, Sep 21, 2011 at 12:45 PM, Ronen Itkin wrote:
> It is a strange setup - I agree.
> The thing is that is it running on AMAZON EC2 - and basically it all I have
> right now.
>
> Does anyone el
Is there any relation between cache blocks and family blocks?
Specifically,
if a family's block size is smaller than some of the keyvalues in the family,
can those keyvalues be held in the cache?
Are the blocks in the cache designed to be the same size as the family's blocks?
What is in a b
It is a strange setup - I agree.
The thing is that is it running on AMAZON EC2 - and basically it all I have
right now.
Does anyone else has experienced different issues with that king of setup?
On Wed, Sep 21, 2011 at 6:56 PM, Stack wrote:
> On Wed, Sep 21, 2011 at 7:32 AM, Ronen Itkin wrote
Hi ,
Our environment
hbase 90.2 (10 machine)
We have 10 machine grid:
master has 48G ram
slaves machine has 16G ram.
Region Server process has 4G ram
Zookeeper process has 2G ram
We have 4map/2reducer per machine
We write from m/r job to hbase (2 jobs a day).
1) We run
> HBase and HDFS are not made to span datacenters.
Yes, I know. I think the correct terminology is 3 availability zones
within the same region (ping between them is about 1ms)
> You could paste the thread dump
This is the full stacktrace:
Full thread dump Java HotSpot(TM) 64-Bit Server VM (20.1
I pored over a few JIRAs and this looks like an issue many of you might have
seen already. I am not sure. Do let me know if you guys have.
We are currently having some problems with our cluster. I had pointed it out
briefly in a mail titled "Unassigned holes in tables".
We use a patched versio
Also, look at the 'Tool' interface.
On Sep 21, 2011, at 9:09 AM, Stack wrote:
> On Wed, Sep 21, 2011 at 1:05 AM, Steinmaurer Thomas
> wrote:
>> when writing/executing a self-written MR-Job. How are you guys handle
>> custom properties? As command-line arguments when starting the MR-job or
>> via
On Sep 20, 2011, at 8:37 AM, Buttler, David wrote:
> Wait, you do realize that you have to have a majority of zookeeper nodes
> alive for zookeeper to work, right? That means that you get lower
> reliability with two nodes than one node: if either node goes down, zookeeper
> will give up. Th
On Wed, Sep 21, 2011 at 1:05 AM, Steinmaurer Thomas
wrote:
> when writing/executing a self-written MR-Job. How are you guys handle
> custom properties? As command-line arguments when starting the MR-job or
> via a property file?
>
Command-line args works or passing w/ -D if your main is using
Gen
On Wed, Sep 21, 2011 at 1:07 AM, Bogdan Ghidireac wrote:
> I have an HBase 0.90.3 fleet with more than 100 hosts distributed
> across 3 datacenters.
> Yesterday, we experienced some network issues
> for several minutes and the region servers from one data center lost
> the connectivity with the na
Have you searched this lists' archives? A quick search on the net
seems to turn up relevant articles. Here is an older implementation
that you might study for ideas:
https://github.com/hbase-trx/hbase-transactional-tableindexed
St.Ack
On Wed, Sep 21, 2011 at 6:08 AM, Arsalan Bilal wrote:
> I w
On Wed, Sep 21, 2011 at 7:32 AM, Ronen Itkin wrote:
> Is that a problem having HBase HMaster 32bit server working with 64bit
> HRegion servers?
> Can it cause problems? are there any known issues about this case?
>
That is a strange setup. If there are issues running this way, I
cannot think wha
Hi,
Thanks for previous assistance!
I have a question regarding HBase 32bit/64bit.
Is that a problem having HBase HMaster 32bit server working with 64bit
HRegion servers?
Can it cause problems? are there any known issues about this case?
Thank!!
--
*
Ronen Itkin*
Taykey | www.taykey.com
I want to implement *secondary indexes *in* HBase-0.90.1-cdh3u0**.
*I know that there is no native support available in Hbase.
But can you tell me any other way to implement this? Can you refer any
tutorial regarding this?*
*
--
Best Regards,
Arsalan Bilal
Hi Guys,
Issue is resolved, I exported poxy with username and password and it worked fine
-Stuti
From: Stuti Awasthi
Sent: Wednesday, September 21, 2011 4:44 PM
To: user@hbase.apache.org
Subject: Hbase : Failed setting up proxy interface
Hi,
I have 3 nodes cluster. Each hostname resolve to IP co
Hi,
I have 3 nodes cluster. Each hostname resolve to IP correctly . Each machine is
able to ping each other as well as passwordless SSH is also working fine.
I wanted to start regionserver on all 3 machines so I updated conf/regionserver
file with hostname of different machine.
Firewall is off in
Hi Jack,
I understood this concept. The DFS client is directly connected to
the datanodes in hdfs and perform the read/write block data with communicate
with the namenode by client protocol . Is there is no direct involvement of
namenode in the HBase operation ?
Thanks
R.Shanm
Hello,
I have an HBase 0.90.3 fleet with more than 100 hosts distributed
across 3 datacenters. Yesterday, we experienced some network issues
for several minutes and the region servers from one data center lost
the connectivity with the namenode. They started the shutdown sequence
but about 20 host
Hello,
I have an HBase 0.90.3 fleet with more than 100 hosts distributed
across 3 datacenters. Yesterday, we experienced some network issues
for several minutes and the region servers from one data center lost
the connectivity with the namenode. They started the shutdown sequence
but about 20 host
Hello,
when writing/executing a self-written MR-Job. How are you guys handle
custom properties? As command-line arguments when starting the MR-job or
via a property file?
Thanks!
Regards,
Thomas
The master will detect that RS is down by periodically checking a
zookeeper ( it will say in the master log, znode expired ). After, it
will check to see if there is anything in /hbase/.logs directory for
that region server, if something is found, master will replay the log
records and 'push' them
Hi All,
I am running the HBase in fully distributed mode. I used the HBase
0.90.2 version . I have one doubt , that one is what will happen when the
Region server is crashed ?
If the one region is managed by one region server then what will happen after
the crash of the region se
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