Grokbase Groups HBase user May 2009

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73 discussions - 351 posts

  • Hi! I am running HBase 0.19.2, r771918 on top of Hadoop 0.19.1, r745977. When I stress the system with lots of uploaded data it often happens a Regionserver gets overloaded and is lost by the ...
    Kirill ShabunovKirill Shabunov
    May 21, 2009 at 6:16 pm
    Jun 4, 2009 at 7:10 am
  • Hello, I've been running some tests using HTable.lockRow but I think it is not performing well. One of my tests is quite simple: run several threads that will execute the following lines for the same ...
    Guilherme GermoglioGuilherme Germoglio
    May 8, 2009 at 11:30 pm
    May 18, 2009 at 3:34 pm
  • Hi All, I am a newbie to hbase. I am able to setup hbase in pseudo-distributed mode and I have also done with its integration from Java. ( java client class and hbase were on same system ) Now, I ...
    May 14, 2009 at 7:33 am
    Jul 8, 2009 at 6:08 am
  • HBase 0.19.3 is now available for download: This release addresses 14 issues found since the release of 0.19.2. See the release notes for details: ...
    May 28, 2009 at 12:59 am
    Jun 2, 2009 at 9:42 pm
  • All, I'm just getting started with HBASE 0.19.1. I am running it on a five node Linux cluster. Everything seen to be working well. I can successfully manipulate tables via the shell. I cannot, ...
    May 26, 2009 at 11:58 pm
    May 30, 2009 at 9:41 pm
  • Hi there, Thought I would run a count 'table-name' to see how many records are in a table. The count didn't work so I went and took a look in the regionserver log file and see the below. Now, to be ...
    Sasha DolgySasha Dolgy
    May 15, 2009 at 8:54 am
    May 20, 2009 at 7:33 am
  • Hey all, I'm loading data from a DB into HBase. I have a single java process iterating over a ResultSet. After about 10,000 rows i do a BatchUpdate. I've changed the Heap size of both Hadoop & HBase ...
    May 15, 2009 at 8:11 pm
    May 19, 2009 at 5:18 pm
  • Hi, I have been asekd to automate the following processes in HBase: - Script to add/remove regionservers and datanodes from a cluster when cluster is live - Script to handle master node failure - ...
    Ninad RautNinad Raut
    May 14, 2009 at 6:47 am
    May 17, 2009 at 7:10 am
  • Hi there, I had a single-node cluster up and running. And yesterday the node crashed for unknown reason, and when I restart it, everything appears to work except that all the tables are LOST( UI says ...
    Yabo-Arber XuYabo-Arber Xu
    May 25, 2009 at 4:05 am
    May 31, 2009 at 4:47 pm
  • I have seen several pages (most over a year old) which make reference to building lucene indexes against hbase, is there any updated documentation which can be used to do this, or an old document ...
    Jamie JohnsonJamie Johnson
    May 16, 2009 at 8:04 pm
    May 18, 2009 at 5:21 am
  • I am a Hbase/hadoop beginner. As an initial test, I am trying to import about 120GB of records into one big table in HBase (replication level 2). I have a HBase master and a Hadoop namenode running ...
    Alexandra AlecuAlexandra Alecu
    May 13, 2009 at 5:56 pm
    May 14, 2009 at 5:31 pm
  • Hi there, I have the following table created, with indexes. {NAME = 'foo', IS_ROOT = 'false', IS_META = 'false', FAMILIES = [{NAME = 'entry', BLOOMFILTER = 'false', COMPRESSION = 'NONE', VERSIONS = ...
    Sasha DolgySasha Dolgy
    May 13, 2009 at 10:51 pm
    May 13, 2009 at 11:35 pm
  • Hi, I was trying to create secondary indexes on hbase table. i used the below reference to create the table. and i got successfully created. reference: ...
    Rakhi KhatwaniRakhi Khatwani
    May 29, 2009 at 8:25 am
    Jun 1, 2009 at 7:41 pm
  • Hi, I am using HBase for development of a system for my research project. I have a few questions regarding some recent API and Class changes in HBase which I suppose are to be released in HBase 0.20. ...
    Sudipto DasSudipto Das
    May 29, 2009 at 2:02 am
    May 31, 2009 at 11:20 pm
  • Hi, I've been experimenting row scanning in hbase recently, following advice from One thing I notice is ...
    Xinan WuXinan Wu
    May 29, 2009 at 1:47 am
    May 29, 2009 at 4:23 am
  • Hi, I wanna set up a cluster of 5 nodes in such a way that node1 - master node2 - secondary namenode node3 - slave node4 - slave node5 - slave How do we go about that? there is no property in ...
    Rakhi KhatwaniRakhi Khatwani
    May 14, 2009 at 1:04 pm
    May 19, 2009 at 5:04 pm
  • Hello all, Our company has been looking into Hadoop & HBase, and has decided to put up a test cluster. I've got Hadoop (0.19.1) with HBase cluster up and running on 4 boxes. Currently we store our ...
    May 12, 2009 at 10:03 pm
    May 14, 2009 at 12:31 am
  • Hi All, I a newbie to hbase, my question is how HBase internally manages data, what data structre it uses to store and manage data. Please help. Thanks in advance. -- View this message in context: ...
    May 6, 2009 at 7:27 am
    May 8, 2009 at 4:04 am
  • Unfortunately, a BatchUpdate object does not get this field updated upon Htable.commit(), if it was left unset (it remains set to its default LATEST_TIMESTAMP, on 0.19.1). Could that be done? This ...
    Bob SchulzeBob Schulze
    May 25, 2009 at 4:31 pm
    May 26, 2009 at 3:39 pm
  • hi colleagues, I am doing batup insert on a 20 nodes cluster. Unfortunately the data are inserted to the last region (sequential insert), I have already applied the Hbase-1058 patch before the batch ...
    11 Nov.11 Nov.
    May 12, 2009 at 8:46 am
    May 14, 2009 at 3:38 am
  • Hi everyone, I'm working on a project in which we need a distributed inverted index, and are getting some fair results using HBase and Hadoop (Crawlers - Document Repository (HBase) --M/R- Document ...
    Menno LuitenMenno Luiten
    May 8, 2009 at 12:25 pm
    May 8, 2009 at 3:15 pm
  • Hi, I started to experiment hbase-0.20 trunk code today and imported about 6GB data using native JAVA API. I occationally get RetriesExhaustedException exception during importing and it's usually ...
    Xinan WuXinan Wu
    May 30, 2009 at 2:11 am
    Jun 2, 2009 at 6:56 pm
  • Hello, I just needed to remove 8 machines from our 33 node cluster. (hadoop-0.19.1, hbase-0.19.2) The first 4 nodes I decommissioned in hadoop with the exclude-file and hbase running. After 4 hours I ...
    Mat HofschenMat Hofschen
    May 27, 2009 at 2:55 pm
    May 28, 2009 at 6:17 pm
  • Xudong Du, While I appreciate answering HBase questions, I prefer to do that on the HBase users mailing list for everyone's benefit. Your problem seems to be that the HDFS Namenode is running but you ...
    Jean-Daniel CryansJean-Daniel Cryans
    May 27, 2009 at 12:02 pm
    May 27, 2009 at 5:34 pm
  • Hi, I want to get a design perspective here as to what will be the advantages of seperating region servers and compute node(to run mapreduce tasks) Will seperating datanodes from computes node reduce ...
    Ninad RautNinad Raut
    May 14, 2009 at 9:56 am
    May 17, 2009 at 7:09 am
  • Hi All, What is the ideal set up for HDFS and HBase? Do I install my HBase regionservers on the same machines that have HDFS datanodes? Or, is it better to separate all of them? Thanks, Harold
    Harold LimHarold Lim
    May 12, 2009 at 4:59 pm
    May 12, 2009 at 6:26 pm
  • Hi, I have started to work with hadoop and hbase recently. I want to know how to store and retrieve data and perform query on stored data by using hbase. Is there any tutorial available for this ...
    Muhammad MudassarMuhammad Mudassar
    May 29, 2009 at 1:15 pm
    May 29, 2009 at 11:41 pm
  • Hi, In the HBase shell wiki page it states the following: "Your script can lean on the methods provided by the HBase Shell." Can anyone provide a link or an example of how this would be done? I am ...
    Norbert AntunesNorbert Antunes
    May 26, 2009 at 10:39 pm
    May 27, 2009 at 12:07 pm
  • What do people think? It'd probably be in San Francisco. It'd have to be a little early because a bunch of us will be heading south for the Thanks, ...
    May 19, 2009 at 10:09 pm
    May 19, 2009 at 10:10 pm
  • I'd like to run an efficient table get() methods and retrieve about a 1000 rows where each row includes about 4 columns (around 20 bytes per cell) with several versions per column. I assume the ...
    Yair Even-ZoharYair Even-Zohar
    May 17, 2009 at 6:18 pm
    May 19, 2009 at 5:32 am
  • Hi, Was wondering if anyone can shed light on the following debug message I'm seeing: 2009-05-13 06:35:48,417 DEBUG [Thread-3] ( message.MessageQueue: Queue size = 0 2009-05-13 ...
    Sasha DolgySasha Dolgy
    May 13, 2009 at 10:24 am
    May 13, 2009 at 3:30 pm
  • I'm running hadoop 0.20.0 and I used svn to get the hbase trunk as of today (May 9). I did an 'ant package' in the hbase trunk, configured it for 5 nodes, distributed it to them, and started up my ...
    Tom SantosTom Santos
    May 9, 2009 at 11:22 pm
    May 10, 2009 at 8:44 am
  • Hi all! How to get all rowkey values in HBase? Thanks! Best, Nguyen
    May 7, 2009 at 4:17 am
    May 7, 2009 at 4:09 pm
  • Hi, Have a question, I see the hbase shell allows me to create multiple columns... is it optimal for me to insert a small set of data in every row and scale it to billions of row? the problem is the ...
    May 29, 2009 at 6:36 pm
    Jun 1, 2009 at 3:34 am
  • HBase will be represented by Ryan Rawson on a free full day meetup covering "open source, distributed, non relational databases" on June 11th in San Francisco. The idea is that the event will give ...
    Johan OskarssonJohan Oskarsson
    May 12, 2009 at 3:45 pm
    May 13, 2009 at 9:34 am
  • This year's Hadoop Summit ( is confirmed for June 10th at the Santa Clara Marriott, and is now open for registration. We have a packed agenda, with ...
    Ajay AnandAjay Anand
    May 5, 2009 at 9:15 pm
    May 12, 2009 at 5:20 pm
  • Hey there, I've been working with Hadoop for about a year now, and have recently been tasked with our new metadata storange and analysis platform. I'm looking for your advice into what I should ...
    May 11, 2009 at 10:57 pm
    May 12, 2009 at 12:37 am
  • Hello all, I am currently testing some MR job which does a form of a naive join on a HBase table with itself or a Hadoop file with itself. My findings are that HBase table has a huge overhead (in ...
    Eran BergmanEran Bergman
    May 11, 2009 at 12:41 pm
    May 11, 2009 at 4:38 pm
  • Can we increase the priority of Hbase-52 please? This feature is essential to anybody who uses the versions as an additional dimension in Hbase. Using versions allows us to view hbase not only as a ...
    Yair Even-ZoharYair Even-Zohar
    May 11, 2009 at 10:24 am
    May 11, 2009 at 3:35 pm
  • Hi, I have a couple of small issues regarding hadoop/hbase 1. i wanna scan a table, but the table is really huge. so i want the result of the scan to some file so that i can analyze it. how do we go ...
    Rakhi KhatwaniRakhi Khatwani
    May 6, 2009 at 10:09 am
    May 11, 2009 at 6:09 am
  • HBase 0.19.2 is now available for download 17 issues have been fixed since hbase 0.19.1. Release notes are available here: ** ...
    May 9, 2009 at 5:53 pm
    May 9, 2009 at 7:05 pm
  • All, Please pardon if this question has been asked before. For I have done a lot of google'ing on this subject and have been having trouble finding the exact answer to my query. In short: is it ...
    Andrew WhartonAndrew Wharton
    May 28, 2009 at 8:06 pm
    May 28, 2009 at 8:49 pm
  • Hi all, With HBASE-1304, it's time to normalize and review our filter API. Here are a few givens: - all calls must be byte[] offset,int offset, int length - maybe we can have calls for KeyValue ...
    Ryan RawsonRyan Rawson
    May 27, 2009 at 6:29 am
    May 27, 2009 at 10:54 pm
  • Hey all, I'm trying to find some up-to-date hardware advice for building a Hadoop cluster. I've only been able to dig up the following links. Given Moore's law, these are already out of date: ...
    Patrick AngelesPatrick Angeles
    May 27, 2009 at 1:50 pm
    May 27, 2009 at 7:39 pm
  • Questions such as these are better asked on the HBase user mailing list. See for how to subscribe. There is also an IRC channel on ...
    Jim Kellerman (POWERSET)Jim Kellerman (POWERSET)
    May 20, 2009 at 3:21 pm
    May 22, 2009 at 9:55 am
  • Hi I am running map reduce row count program to count number of rows in my HBase table. It is giving the following exception: 09/05/21 10:31:47 INFO hdfs.DFSClient: ...
    Puri, AseemPuri, Aseem
    May 21, 2009 at 5:10 am
    May 21, 2009 at 3:58 pm
  • Hi All, I am able to setup hbase with hadoop in pseudo distributed mode. Now, I am not able to find good tutorial on net for setting up hbase in multinode cluster. Please help. -- View this message ...
    May 20, 2009 at 1:34 pm
    May 20, 2009 at 6:18 pm
  • The next Bay Area Hadoop User Group meeting is scheduled for Wednesday, May 20th at Yahoo! 700 First Avenue, Sunnyvale, Building E, Class room 10 from 6:00-7:30 pm. Please note that the location has ...
    Ajay AnandAjay Anand
    May 13, 2009 at 8:14 pm
    May 20, 2009 at 4:35 pm
  • Hi All, I am able to play with tables ( add, update, insert etc. ) from a java class using HTable, BatchUpdate apis. Is there are any apis to directly execute hql queries from a java program, just ...
    May 20, 2009 at 10:25 am
    May 20, 2009 at 10:33 am
  • Hi, I am trying to stop start region server remotely but I am getting a error log saying "connection to node1/ from an unknown user: closed" ssh [email protected] ...
    Ninad RautNinad Raut
    May 18, 2009 at 10:27 am
    May 19, 2009 at 5:10 am
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70 users for May 2009

Stack: 70 posts Ryan Rawson: 26 posts Llpind: 24 posts Andrew Purtell: 22 posts Sasha Dolgy: 14 posts Guilherme Germoglio: 13 posts Monty123: 13 posts Ninad Raut: 12 posts Jean-Daniel Cryans: 11 posts Billy Pearson: 7 posts Gcr44: 7 posts Alexandra Alecu: 5 posts Ajay Anand: 4 posts Bradford Stephens: 4 posts John Ellis (MELBOURNE-AU): 4 posts Kirill Shabunov: 4 posts Nitay: 4 posts Puri, Aseem: 4 posts Qian, Ling: 4 posts Rakhi Khatwani: 4 posts
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