(req) unsubscribe

list, I'd like to unsubscribe this mail list. thanks. -- *Ric Dong *

How can I set heap size for HBase?

Dear All, I wonder how I can set heap size for HBase and what is the suitable portion compared to whole memory size? And the other question is that how many memory size I need to give to Java when I run HBase, as I sometimes got out of memory problems. Thanks! Yong

Re: How can I set heap size for HBase?

Hi Yong, First, you might want to take a look at that: http://wiki.apache.org/hadoop/Hbase/FAQ_Operations#A1 for the out of memory issue. Regardin which size to assign to HBase, take a look at the very short one: http://hbase.apache.org/book/performance.html#perf.os The more you can give it,

Re: (req) unsubscribe

On Sun, Mar 10, 2013 at 11:35 PM, dong.yajun dongt...@gmail.com wrote: list, I'd like to unsubscribe this mail list. For how to unsubscribe, see: http://hbase.apache.org/mail-lists.html

Re: Welcome our newest Committer Anoop

Congrats and welcome. On Mon, Mar 11, 2013 at 2:21 AM, Nicolas Liochon nkey...@gmail.com wrote: Congrats, Anoop! On Mon, Mar 11, 2013 at 5:35 AM, rajeshbabu chintaguntla rajeshbabu.chintagun...@huawei.com wrote: Contratulations Anoop!

Writable as a OutValue of a mapper

Hi Hbase, I have an issue using a mapper. I'd like to either emit a Put or a Delete in the same map function. I've specified Writable.class as the outputValueClass but i have a type mismatch : expected Writable, received Put ( or Delete ). Is there a way to deal with this issue ? Sincerely, G.

Re: Writable as a OutValue of a mapper

Put extends Mutation Can you try using Mutation.class ? BTW What HBase version are you using ? Cheers On Mon, Mar 11, 2013 at 11:42 AM, Gaetan Deputier g...@ividence.com wrote: Hi Hbase, I have an issue using a mapper. I'd like to either emit a Put or a Delete in the same map function.

HBase and Data Integrity

I have some questions for HBase DB: How to ensure data integrity? Are there methods ensure the integrity? Does HBase primary key? or alternatives Foreign key? Referential Integrity? How are the ACID properties to be implemented? Ever Thanks for a possible feedback best

Re: HBase void check(Put p) any example?

Which HBase version are you using ? Can you be a little specific about the constraint you're considering ? Thanks On Mon, Mar 11, 2013 at 1:24 PM, viv1d sb.h...@gmail.com wrote: I'm looking for an example of the constraints in HBase with void check (put p), this is indeed possible, but

Re: HBase and Data Integrity

On Mon, Mar 11, 2013 at 1:25 PM, viv1d sb.h...@gmail.com wrote: I have some questions for HBase DB: How to ensure data integrity? Are there methods ensure the integrity? Does HBase primary key? or alternatives Foreign key? Referential Integrity? How are the ACID

Re: HBase and Data Integrity

Hi SB, I have written a few blog posts about various topics. For ACID and consistency questions this might help: http://hadoop-hbase.blogspot.com/2012/03/acid-in-hbase.html As a general quick introduction this might be of help:

Re: HBase void check(Put p) any example?

use the last HBase Version! I've read something about constraints and also what found http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/constraint/Constraint.html but unfortunately I do not have a code sample to validate that such data or the like, in which data integrity plays a role?

Hbase Thrift DemoClient.php bug

hiya installed thrift and hbase. and testing php with hbase. i tested apache thrift 0.90 and 1.0-dev with hbase 0.94.2 and hbase 0.94.5 's Hbase.thrift $ php DemoClient.php failed like below html head titleDemoClient/title /head body pre scanning tables... found: cars found: demo_table

Re: Hbase Thrift DemoClient.php bug

Thanks for reporting this. Mind opening a jira ? On Mar 11, 2013, at 7:13 PM, jung moor...@gmail.com wrote: hiya installed thrift and hbase. and testing php with hbase. i tested apache thrift 0.90 and 1.0-dev with hbase 0.94.2 and hbase 0.94.5 's Hbase.thrift $ php DemoClient.php

region server down when scanning using mapreduce

Hi, When we use mapreduce to dump data from a pretty large table on hbase. One region server crash and then another. Mapreduce is deployed together with hbase. 1) From log of the region server, there are both next and multi operations on going. Is it because there is write/read conflict that

Re: region server down when scanning using mapreduce

did you closed block cache when you used mr dump？ On Mar 12, 2013 1:06 PM, Lu, Wei w...@microstrategy.com wrote: Hi, When we use mapreduce to dump data from a pretty large table on hbase. One region server crash and then another. Mapreduce is deployed together with hbase. 1) From log of

RE: region server down when scanning using mapreduce

No, does block cache matter? Btw, the mr dump is a mr program we implemented rather than the hbase tool. Thanks -Original Message- From: Azuryy Yu [mailto:azury...@gmail.com] Sent: Tuesday, March 12, 2013 1:18 PM To: user@hbase.apache.org Subject: Re: region server down when scanning

Re: region server down when scanning using mapreduce

please read here http://hbase.apache.org/book.html (11.8.5. Block Cache) to get some background of block cache. On Tue, Mar 12, 2013 at 1:31 PM, Lu, Wei w...@microstrategy.com wrote: No, does block cache matter? Btw, the mr dump is a mr program we implemented rather than the hbase tool.

Regionserver goes down while endpoint execution

Hi, I have a table in hbase which has more than 5GB of data, it is distributed at 101 regions at 5 regionservers. When I execute an endpoint which is supposed to fetch a column qualifier value using an endpoint RPC client, the region server goes down. The hbase master log says Can't connect to