I've been reading the book definitive guide and hbase in action a
little. I found this question from Cloudera that I'm not sure after
looking some benchmarks and documentations from HBase. Could someone
explain me a little about? . I think that when you do a large scan you
should disable the
We operate a solution that stores large amounts of data in HBASE that needs
to be available for online access.
For efficient scanning, there are three pieces of data encoded in row keys
(in particular a time dimension) and for other reasons some columns hold
JSON encoded data.
Currently,
Hi Demai,
I thought making the client communicate with Central Server
frequently may not be efficient. In case of replication, I can do that
periodically in bulk.
On 7 April 2014 22:00, Demai Ni nid...@gmail.com wrote:
I looks to me that. You like to have the small clusters
Hello,
i have one table in Hbase with 250GB of data and have problem while using
Hbase REST scanner.
What i do is:
1. calling http://server:20550/table/scanner
with POST and Content-Type: text/xml
Scanner endRow=value2 startRow=value1 batch=100/Scanner
2. then getting header location and
Hi,
I have one region server which needs to be rebooted for server
maintenance. The server hosts both the hadoop and hbase
slave(hadoop2-hbase 0.96). What is the recommended steps to reboot it
without impacting hbase service?
Hi Rural,
Decomission the node, stop the processes, and reboot. You can look at the
scripts in bin/ to help you with that. Like bin/graceful_stop.sh.
JM
2014-04-09 9:57 GMT-04:00 Rural Hunter ruralhun...@gmail.com:
Hi,
I have one region server which needs to be rebooted for server
You can use bin/graceful_stop.sh to stop the region server process.
# Move regions off a server then stop it. Optionally restart and reload.
# Turn off the balancer before running this script.
After that, you can stop hadoop (datanode, etc)
On Wed, Apr 9, 2014 at 7:57 AM, Rural Hunter
Please take a look at http://www.n10k.com/blog/blockcache-101/
For D, hbase.regionserver.global.memstore.size is specified in terms of
percentage of heap. Unless you enable HBASE-5349 'Automagically tweak
global memstore and block cache sizes based on workload'
On Wed, Apr 9, 2014 at 12:24 AM,
Thanks. What if I'm not able to login the region server(both ssh and
local)? I have to reboot and check the server because of this serious
problem.
于 2014/4/9 22:01, Ted Yu 写道:
You can use bin/graceful_stop.sh to stop the region server process.
# Move regions off a server then stop it.
Actually I have to do a hard reboot. Let me provide more info about the
problem: Except the ssh service(ssh error is:
ssh_exchange_identification: Connection closed by remote host) and local
login problem, other services are running fine on the server(including
http/ftp/hbase/hadoop etc).
于
Hum.
Disable load balancer, and move all the regions manually to other hosts
using the shell? Then hard restart it?
JM
2014-04-09 10:26 GMT-04:00 Rural Hunter ruralhun...@gmail.com:
Actually I have to do a hard reboot. Let me provide more info about the
problem: Except the ssh service(ssh
Rural:
Take a look at:
http://hbase.apache.org/book.html#decommission
especially 15.3.1.1
On Wed, Apr 9, 2014 at 8:28 AM, Jean-Marc Spaggiari jean-m...@spaggiari.org
wrote:
Hum.
Disable load balancer, and move all the regions manually to other hosts
using the shell? Then hard restart it?
Pretty interested the link, I'll keep it in my favorites.
On 09/04/14 16:07, Ted Yu wrote:
Please take a look at http://www.n10k.com/blog/blockcache-101/
For D, hbase.regionserver.global.memstore.size is specified in terms of
percentage of heap. Unless you enable HBASE-5349 'Automagically
Manthosh,
not sure doing replication periodically is the right way to go. I assume
you will manually start/stop replication from Master?
anyway, if it fits your business needs, give it a shoot. Let's know how it
goes.
Cheers.
Demai
On Wed, Apr 9, 2014 at 6:10 AM, Manthosh Kumar T
Hi
I downloaded and installed hortonworks sandbox 2.0 for virtualbox.
HBase version is: 0.96.0.2.0.6.0-76-hadoop2,
re6d7a56f72914d01e55c0478d74e5cfd3778f231
[hbase@sandbox twitbase-master]$ cat /etc/hosts
# Do not remove the following line, or various programs
# that require network
On Wednesday, April 9, 2014 6:18:35 AM UTC-7, Juraj jiv wrote:
Hello,
i have one table in Hbase with 250GB of data and have problem while using
Hbase REST scanner.
What i do is:
1. calling http://server:20550/table/scanner
with POST and Content-Type: text/xml
Scanner endRow=value2
Hi,
I try to chance my HBase 0.98.1 split policy to be
ConstantSizeRegionSplitPolicy so I have updated my hbase-site.xml do be
this:
property
namehbase.regionserver.region.split.policy/name
valueorg.apache.hadoop.hbase.regionserver.ConstantSizeRegionSplitPolicy/value
/property
Then on
I'm currently running into an issue on my local setup where my application is
unable to connect to the hbase table but I'm successfully able to query the
table using hbase shell.
I'm using HTable client to make the connection and would expect to get an
error after certain retries when it's unable
Ok. From the logs, I can clearly see that my settings are not getting use:
2014-04-09 15:35:03,737 DEBUG [MemStoreFlusher.0]
regionserver.IncreasingToUpperBoundRegionSplitPolicy: ShouldSplit because
info size=2242479890, sizeToCheck=2147483648, regionsWithCommonTable=2
I will try to figure why
Hello all,
When I take a snapshot on cluster 1, copy it to cluster 2 using ExportSnapshot
utility, what permissions should I set on the snapshot to be able to clone it
into a new table? I matched the permissions of the external snapshot to the
permissions of any local snapshots on cluster 2
The Jira says it's enabled by auto. Is there an official explaining this
feature?
On Wednesday, April 9, 2014, Ted Yu yuzhih...@gmail.com wrote:
Please take a look at http://www.n10k.com/blog/blockcache-101/
For D, hbase.regionserver.global.memstore.size is specified in terms of
percentage
Didn't quite get what you mean, Asaf.
If you're talking about HBASE-5349, please read release note of HBASE-5349.
By default, memstore min/max range is initialized to memstore percent:
globalMemStorePercentMinRange = conf.getFloat(
MEMSTORE_SIZE_MIN_RANGE_KEY,
Can you give us some more detail such as:
the HBase release you're using
the stack trace of permission error
I assume you have read 15.8.7 and 15.8.8 of:
http://hbase.apache.org/book.html#ops.snapshots
Cheers
On Wed, Apr 9, 2014 at 3:08 PM, Artem Ervits are9...@nyp.org wrote:
Hello all,
Have you modified pom.xml of twitbase ?
If not, this is the dependency you get:
dependency
groupIdorg.apache.hbase/groupId
artifactIdhbase/artifactId
version0.92.1/version
0.92.1 and 0.96.0 are not compatible.
Cheers
On Wed, Apr 9, 2014 at 10:58 AM, Margusja mar...@roo.ee
I read it thanks. I'm getting privilege access exception hbase user on write
permission. I don't have the exception handy. I will supply it shortly. I'm
using 0.96.1.1 on hadoop 2.
Artem Ervits
Data Analyst
New York Presbyterian Hospital
- Original Message -
From: Ted Yu
2014-03-21 11:35:36,998 FATAL [master:server:6] master.HMaster: Unhandled
exception. Starting shutdown.
org.apache.hadoop.security.AccessControlException: Permission denied:
user=hbase, access=WRITE, inode=/apps:hdfs:hdfs:drwxr-xr-x
at
You can either give user hbase write access to /apps, or use another
directory where user hbase can write to.
Cheers
On Wed, Apr 9, 2014 at 6:28 PM, Artem Ervits are9...@nyp.org wrote:
2014-03-21 11:35:36,998 FATAL [master:server:6] master.HMaster:
Unhandled exception. Starting shutdown.
Does hbase-regionserver log have some error message?
On Thu, Apr 10, 2014 at 3:27 AM, kanwal kanwal...@gmail.com wrote:
I'm currently running into an issue on my local setup where my application
is
unable to connect to the hbase table but I'm successfully able to query the
table using hbase
No. Couldn't find any error in the log.
On Wed, Apr 9, 2014 at 10:26 PM, Shengjun Xin [via Apache HBase]
ml-node+s679495n4058051...@n3.nabble.com wrote:
Does hbase-regionserver log have some error message?
On Thu, Apr 10, 2014 at 3:27 AM, kanwal [hidden
29 matches
Mail list logo
