Hi,
Can we update a particular record in hbase? If we can pls help in sharing the
command.
Regards,
Rams
Nothing is updated in place in HBase. All write operation create new versions.
Have a look at this: http://hbase.apache.org/book.html#datamodel
- Original Message -
From: Ramasubramanian ramasubramanian.naraya...@gmail.com
To: user@hbase.apache.org
Cc:
Sent: Wednesday, September 12,
HTable is the usual java interface to interact with a table in HBase. You
can see the api for that here:
http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/client/HBaseAdmin.html
The Ref guide has a more comprehensive overview of the client here:
http://hbase.apache.org/book/client.html
On
You can use the shell too
http://wiki.apache.org/hadoop/Hbase/Shell
Update is again a put. Incase of multiple version support the older values
could be retained.
Regards,
Samar
On 13/09/12 12:04 PM, Elliott Clark ecl...@stumbleupon.com wrote:
HTable is the usual java interface to interact with
You might find it along with your hbase log files. The file name would be
same as your other log file except that it would be a .out file.
Regards,
Samar
On 13/09/12 10:18 AM, Xiang Hua bea...@gmail.com wrote:
hi,
where can i fidn the GC log?
I am a newcomer.
Thanks!
beatls
On Wed,
Hi，
pls give some advice for adding a datanode.
can we add a datanode without shutdown cluster.
Thanks!
beatls
yes, region server is included. as well as datanode.
On Thu, Sep 13, 2012 at 4:50 PM, samar kumar samar.opensou...@gmail.comwrote:
Do you mean Region server??
On 13/09/12 2:04 PM, Xiang Hua bea...@gmail.com wrote:
Hi，
pls give some advice for adding a datanode.
can we add a datanode
Hi there, I don't know the specifics of your environment, but ...
http://hbase.apache.org/book.html#perf.reading
11.8.2. Scan Attribute Selection
Š describes paying attention to the number of columns you are returning,
particularly when using HBase as a MR source. In short, returning only
the
In my case, I am not feeding hbase result to mapred, it's just pure hbase
scan, returning all columns vs two columns makes huge difference to me.
On 13 September 2012 15:29, Doug Meil doug.m...@explorysmedical.com wrote:
Hi there, I don't know the specifics of your environment, but ...
Not sure of your schema...
Each column family is in a separate collection of StoreFiles. Scan all will
read all these files whereas your second scan will only read the StoreFiles
associated with column family cf (difference if you have multiple column
families). Additionally, pushing a large
Hi,
I saw an issue about using filter in scan on shell was reported as fixed in
version 0.92.0 from (https://issues.apache.org/jira/browse/HBASE-3817), but
it seems using a filter still makes the hbase shell disfunctioning in
0.92.1. Can anyone else reproduce this issue?
Script to reproduce
The folks at wizecommerce have kindly offered to host a meetup down in
San Mateo on the evening of 10/29.
Are you all up for a user meetup at the end of October after Hadoop World?
If so, I'll stick it up in meetup.
If you are interested in presenting, write me off list and we'll get
you signed
Your HBase team are pleased to announce the release of HBase 0.92.2.
Download it from your favorite Apache mirror [1].
I am trying to push the artifacts to maven repo.
HBase 0.92.2 is a bug fix release. For a complete list of changes, see the
release notes [2].
If upgrading from 0.90.x to
No, there's no sorted dimension. This would be a full table scan over
40M rows. This assumes the following:
1) your regions are evenly distributed across a four node cluster
2) unique combinations of month * scene are small enough to fit into memory
3) you chunk it up on the client side and run
Hi all,
I'm using HBase replication between two clusters running CDH3u3 and I
recently noticed that a replicated column family was lagging by more than
a day... that is, it required more than 24 hours for a Put to replicate
from master to slave. The root cause of the lag appears to be swapping
On Thu, Sep 13, 2012 at 11:44 AM, Ted Yu yuzhih...@gmail.com wrote:
https://issues.apache.org/jira/secure/ReleaseNote.jspa?version=12319888styleName=HtmlprojectId=12310753https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=12310753version=12318551
Of those two links, one is 0.92.2
The best metric at the moment is hbase.replication.sizeOfLogQueue
published through JMX. If your have Ganglia, opentsdb or Cacti you can
graph how many logs per server need to be replicated and then you'll
have a good idea of how much data needs to be replicated.
If it goes up to more than 2 per
This is a great answer, I can see that particular ganglia metric sharply
increased when the issue began. Thanks much.
One followup question:
Can a distressed slave cluster cause performance issues on the master
cluster? It appears our performance problem was occurring on the slave
peer, but
Thanks for pointing out J-D.
On Thu, Sep 13, 2012 at 2:05 PM, Jean-Daniel Cryans jdcry...@apache.orgwrote:
On Thu, Sep 13, 2012 at 11:44 AM, Ted Yu yuzhih...@gmail.com wrote:
https://issues.apache.org/jira/secure/ReleaseNote.jspa?version=12319888styleName=HtmlprojectId=12310753
Hello,
I am trying to set up HBase at pseudo-distributed mode on my Macbook.
I was able to installed hadoop and HBase and started the nodes.
$JPS
5417 TaskTracker
5083 NameNode
5761 HRegionServer
5658 HMaster
6015 Jps
5613 HQuorumPeer
5171 DataNode
5327 JobTracker
5262 SecondaryNameNode
Regards, Jason.
Answers in line
On 09/13/2012 06:42 PM, Jason Huang wrote:
Hello,
I am trying to set up HBase at pseudo-distributed mode on my Macbook.
I was able to installed hadoop and HBase and started the nodes.
$JPS
5417 TaskTracker
5083 NameNode
5761 HRegionServer
5658 HMaster
6015 Jps
Hi,
not root user can not find all the hadoop process.
1. root use find all the process, below:
[root@hadoop1 ~]# jps
17452 SecondaryNameNode
18266 Main
7759 Jps
32095 QuorumPeerMain
17108 JobTracker
16955 TaskTracker
17566 HMaster
17177 NameNode
17765 HRegionServer
19424 ThriftServer
From jps' man page:
DESCRIPTION
The jps tool lists the instrumented HotSpot Java Virtual
Machines (JVMs) on the target system. The tool is limited to reporting
information on JVMs for which it has
the access permissions.
So normally it only shows you your own processes if you're
Hi,
When I use C++ to call 0.92 HBase java APIs, it failed to log in. I tried
similar operation by directly using Java Api, and they succeed.
So, is there any difference between using java api through JNI with directly
calling the same java api??
Can anyone help me out? Thank you very much.
CLASSPATH issue?
Says:
unable to find LoginModule class:
org/apache/hadoop/security/UserGroupInformation$HadoopLoginModule
St.Ack
On Thu, Sep 13, 2012 at 8:50 PM, Lu, Wei w...@microstrategy.com wrote:
Hi,
When I use C++ to call 0.92 HBase java APIs, it failed to log in. I tried
similar
Hi Stack,
Do you have similar meets anywhere in India? Bangalore maybe?
Thanks,
Arati
On Thu, Sep 13, 2012 at 11:14 PM, Stack st...@duboce.net wrote:
The folks at wizecommerce have kindly offered to host a meetup down in
San Mateo on the evening of 10/29.
Are you all up for a user meetup
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