HBase: How to delete region

Re: bug report: opening hbase region takes too long , making the region not available for more than
August 19, 2010 11:38:45 AM
Jonathan: We saw similar issue using HBASE 0.20.6 with HBASE-2473 Caused by: org.apache.hadoop.hbase.client.NoServerForRegionException: No server address listed in .META. for region HB_INC_POST_0818-ERROR_SAMPLES-1282193650093,,1282193650831 at…

hbase region server/region information
June 6, 2011 10:12:40 PM
Hi, I just loaded a bunch of data into Hbase , and want to know the number of regions created, the region servers they are assigned to, and the region size being managed by each region server. Are there any tools/utilities I can use to quickly…

Could I delete a region of table like bulk import ?
October 13, 2010 08:26:44 AM
Hi all, Since HBase has bulk import, could hbase delete a whole region ? Currently I have to do a scan operation then get the row id and invoke delete operation for each row id, this inefficiency. And internally, one region is just some hdfs…

Created] (ZOOKEEPER-1079) 'Create' command in Hbase make a table in Hbase but send 'Delete' request
May 29, 2011 01:45:06 AM
'Create' command in Hbase make a table in Hbase but send 'Delete' request to Zookeeper !!! , "when use 'Create' in Hbase==> Got user-level KeeperException... type:delete" And cause zookeper make Nonode Exception....

scan specific hbase region
October 20, 2010 05:24:36 AM
Hi , I am running hbase scan on daily basis. HBase table become bigger and as a result it takes to more time to scan it , but actually I don't need to scan all the table. Most of the time I need to scan partial data of it. The question is: is…

Initial region loads in hbase..
August 27, 2010 07:02:46 PM
Hi guys, A couple of days back, I had posted a problem on regions taking too much time to load when I restart Hbase.. I have a table that has around 80 K regions on 650 nodes (!) .. I was checking the logs in the master and I notice that the…

HBase 0.90.0 region servers dying
February 16, 2011 02:41:32 AM
Hi, We have a newly setup a cluster of 5 nodes, each with 16 GB rams. We use HBase 0.90.0 on top of Hadoop from CDH3. When testing HBase under heavy load generated bu YCSB, we consistently see region servers dying silently, without any logs or…

Re: HBase querying across region servers
April 28, 2011 05:12:58 PM
(please don't write back personally unless it's really personal) That's all fine, rows are always contained in a single region. By state I meant if you created some fancy filter yourself and decided to keep some state where the filtering of one…

HBase unable to find region servers
April 25, 2011 08:21:50 AM
Hello friends, I was using a hadoop cluster of apache hadoop (version 0.20.2) with apache hbase-0.20.6(2 regionservers) and apache zookeeper 3.3.1 (cluster of 2). I ran into problems when I replaced the apache hadoop 0.20.2 with CDH3(cloudera…

HBase unable to find region servers
April 25, 2011 05:10:36 AM
Hello friends, I was using a hadoop cluster of apache hadoop (version 0.20.2) with apache hbase-0.20.6(2 regionservers) and apache zookeeper 3.3.1 (cluster of 2). I ran into problems when I replaced the apache hadoop 0.20.2 with CDH3(cloudera…

Error Installing Hbase Region Server
October 27, 2010 04:11:06 AM
Hi I am trying to install the region server but i run the following command, its giving error. Here is the output. roo### @app1:/etc/hbase/conf# apt-get -y install hadoop-hbase-regionserver Reading package lists... Done Building dependency tree…

Hbase Region Server Heap Size
November 8, 2010 03:16:13 AM
Hi Does anybody know how to increase the heap size of region servers?

Question regarding region scans in HBase integration
September 11, 2010 09:01:28 PM
I was trying to spend a little time this weekend catching up with the current state of HBase integration for Hive. One thing that I haven't seen mentioned is how exactly Hive scans an HBase table during a SELECT. Does Hive have logic that…

Hbase insertion process cause to region server down.
November 8, 2010 09:52:55 AM
Hi , I run map/reduce job which from reducers writes to hbase. I have to write 8-9 million raws. My environment: 5 servers dual core , 8G ram. HDFS -- 9TB hadoop has 1000 heap_size , hbase has 2000 heap_size zookeeper has 1000…

hbase admin console shows strange region server's name
March 10, 2011 10:15:07 AM
Hi , We are in process of installations hbase 0.90.1. We compiled source code of hadoop-append and changed it in the distribution of hbase We succeeded to run some tests using only hadoop (map/reduce jobs) but , after starting hbase…

Delete from hbase
March 8, 2011 09:27:10 AM
Hi , We inserting ~ 10 million raws per day to hbase. We are using hbase 0.20.3 and going to use 0.90.1. Currently we delete raws in a such way ................ public void delete(HTable t, byte[] row) throws IOException { Delete del…

org.apache.hadoop.hbase.client.NoServerForRegionException: Timed out trying to locate root region
September 19, 2010 09:10:08 AM
Hi, I'm trying to run the java client using the remote client API vs a remote machine on which HBase is configured to work in a semi-distributed mode. When I run the sell on the remote machine everything works just fine (I can create tables set…

Delete whole table HBase
June 5, 2011 03:11:00 AM
Hello all, I have a quick question: Isn't there a method to delete a whole table in the HBase client? As I can see, a Delete object is only able to delete rows, families or columns: Delete(byte[] row) Create a Delete operation for the…

Re: hbase doesn't delete data older than TTL in old regions
September 15, 2010 07:50:49 PM
I artificially set TTL to 10 minutes so that I can get the results quicker, and I don't have to wait for one day to get results. the TTL is set to 600 seconds ( equals 10 minutes) when I did the testing. In real application, TTL will be set to…

Re: hbase doesn't delete data older than TTL in old regions
September 15, 2010 07:29:58 PM
Yeah, indeed the TTL feature is not broken. It works as "advertised" if you understand how HBase internals work. But we can accommodate the expectations communicated on this thread, it sounds reasonable. - Andy --- On Wed, 9/15/10, Ryan…