Grokbase Groups HBase user July 2009

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125 discussions - 610 posts

  • Hi all , I wanted to run HBase in standalone mode to check my Hbase MR programs ... I have dl a built version of hbase-0.20. and i have hadoop 0.19.3 "I have set JAVA_HOME in both of them" .. then i ...
    Bharath vissapragadaBharath vissapragada
    Jul 23, 2009 at 6:45 am
    Jul 23, 2009 at 6:02 pm
  • So.. what's the recommendation for zookeeper? should I run zookeeper nodes on the same region servers? should I run zookeeper nodes external to the region servers? how much memory should I give ...
    Fernando PadillaFernando Padilla
    Jul 14, 2009 at 9:56 pm
    Jul 21, 2009 at 6:39 am
  • Hi All, I am testing 0.20.0-alpha, r785472 and am coming up with an issue I can't seem to figure out. I am accessing hbase from php via thrift. The php script is pulling data from our pgsql server ...
    Hegner, TravisHegner, Travis
    Jul 9, 2009 at 2:17 pm
    Jul 20, 2009 at 1:16 pm
  • Hi all , I want to join(similar to relational databases join) two tables in HBase . Can anyone tell me whether it is already implemented in the source ! Thanks in Advance
    Bharath vissapragadaBharath vissapragada
    Jul 15, 2009 at 4:57 am
    Jul 17, 2009 at 3:57 pm
  • The first hbase 0.20.0 release candidate is available for download:< More than 400 ...
    Jul 30, 2009 at 12:32 am
    Aug 7, 2009 at 7:44 pm
  • Hey Guys, What do I need to do to add regionservers? I thought all I had to do was modify the regionservers file. I've added another box, and updated the regionservers file (and Hadoop slaves), ...
    Jul 2, 2009 at 4:15 pm
    Jul 8, 2009 at 4:54 pm
  • Hi, Does anyone can tell me the benefit of Column-oriented data modal? Thank you Fleming 宏明 --------------------------------------------------------------------------- TSMC PROPERTY This email ...
    Jul 31, 2009 at 5:52 am
    Jul 31, 2009 at 6:31 pm
  • Hi all, 1. In this configuration property: <property <name hbase.hstore.compactionThreshold</name <value 3</value <description If more than this number of HStoreFiles in any one HStore (one ...
    Jul 10, 2009 at 3:58 am
    Jul 27, 2009 at 4:09 am
  • Hi all, I have a 70G sparsely populated tab file (74 columns) to load into 2 column families in a single HBase table. I am running on my tiny dev cluster (4 mac minis, 4G ram, each running all Hadoop ...
    Tim robertsonTim robertson
    Jul 22, 2009 at 12:38 pm
    Jul 23, 2009 at 6:14 pm
  • Hi all, I have one simple doubt in hbase , Suppose i use a scanner to iterate through all the rows in the hbase and process the data in the table corresponding to those rows .Is the processing of ...
    Bharath vissapragadaBharath vissapragada
    Jul 22, 2009 at 4:43 am
    Jul 22, 2009 at 4:44 pm
  • Hi, It looks like HTablePool is designed to have one instance of HTablePool per table. I am confused by the static map inside HTablePool class. If we can instantiate one HTablePool per table, what's ...
    Vaibhav PuranikVaibhav Puranik
    Jul 10, 2009 at 1:48 am
    Jul 14, 2009 at 6:19 pm
  • Hi All, I am getting the "Pass a Delete or a Put" exception from my reducer tasks (, even though I am actually passing a put... for(int i = 0; i < idList.size(); i++) { Put ...
    Hegner, TravisHegner, Travis
    Jul 25, 2009 at 2:14 pm
    Jul 28, 2009 at 8:11 pm
  • Hi all, I wanted to implement TableMap interface so that "map" function can emit <Text,Text .. I wrote the code as follows ...
    Bharath vissapragadaBharath vissapragada
    Jul 24, 2009 at 10:00 am
    Jul 27, 2009 at 8:50 am
  • Hi all, I am pretty new to HBase so forgive me if this seems like a silly question. Each row in my Hbase table is a geographical location that is related to other locations. For e.g. one relationship ...
    Ishaaq ChandyIshaaq Chandy
    Jul 3, 2009 at 7:11 am
    Jul 16, 2009 at 3:26 pm
  • Hi, I am running hbase on single node and my hbase-site seetings are as follows: <configuration <property <name hbase.rootdir</name <value hdfs://</value <description The ...
    Muhammad MudassarMuhammad Mudassar
    Jul 14, 2009 at 1:47 pm
    Jul 15, 2009 at 9:14 am
  • Hi all, Im new to hbase API .. can anyone tell me how to add a "row" to an existing hbase table . I saw Batchupdate class which only modifies existing "rows". i also checked out Htable and HBaseAdmin ...
    Bharath vissapragadaBharath vissapragada
    Jul 7, 2009 at 5:44 pm
    Sep 8, 2009 at 6:27 pm
  • So.. are hbase libraries on some maven repository somewhere?? So I can simply depend on it?
    Fernando PadillaFernando Padilla
    Jul 30, 2009 at 2:46 am
    Jul 30, 2009 at 6:00 pm
  • Hi, We have deployed the latest trunk (yesterday evening 5 pm) on EC2 1 master, 3 region servers. This morning, when I am trying to run client script for querying the table, I am getting following ...
    Vaibhav PuranikVaibhav Puranik
    Jul 24, 2009 at 5:47 pm
    Jul 25, 2009 at 3:01 am
  • Hi all, Generally TableMap.initJob() method takes a "table name" as input to the map while using map-reduce in HBase . Is there a way so that i can use more than 1 table , i.e., input to the map ...
    Bharath vissapragadaBharath vissapragada
    Jul 21, 2009 at 6:35 pm
    Jul 22, 2009 at 5:45 pm
  • Hi I am experiencing the NSRE exception (however, not all NSRE is created equal, so it seems) while scanning TestTable, TestTable is previously populated with sequentialWrite 100x1M records (using ...
    Haijun CaoHaijun Cao
    Jul 19, 2009 at 8:23 pm
    Jul 19, 2009 at 10:34 pm
  • I am having an issue after deleting a row in the HBase 0.20 alpha. After deleting the row using the Delete object, I cannot put a row back that uses the same key as the deleted row. No exceptions ...
    Bryan KellerBryan Keller
    Jul 9, 2009 at 9:43 pm
    Jul 10, 2009 at 9:55 pm
  • Hi, Does anybody have any suggestion/best practices on id/row/key generation for HBase rows? Do people use sequential ids (like rdbms - 1,2,3,4...) or people use strings ids? What id server do you ...
    Vaibhav PuranikVaibhav Puranik
    Jul 8, 2009 at 2:34 pm
    Jul 9, 2009 at 4:09 am
  • Hi there, If I want to save my user's articles, I want to know how to create HBase schema. key value title content create_date U1 t1 c1 d1 U1 t2 c2 d2 U1 t3 c3 d3 After the user sign in,I want to ...
    Jul 31, 2009 at 1:11 am
    Aug 1, 2009 at 9:30 pm
  • Hey, I have a couple tall tables (~ 120M rows each with small columns). I was wondering what type of read performance I can expect using LZO compression? Also, is there a way to enable compression on ...
    Jul 28, 2009 at 9:24 pm
    Jul 29, 2009 at 6:32 pm
  • Hi all , Is there a way , i can get "Scanner" to the part of the table in a specific region server using it's "HOST NAME" ... Eg : suppose i have a table "A" and one of the region servers have ...
    Bharath vissapragadaBharath vissapragada
    Jul 25, 2009 at 9:42 am
    Jul 26, 2009 at 6:30 pm
  • Hi all, (thanks for help on the other thread - I moved this to new one since I was diverging...) Following the instructions on the readme from the trunk (0.20.0) I have in my configuration: ...
    Tim robertsonTim robertson
    Jul 20, 2009 at 5:01 pm
    Jul 21, 2009 at 9:40 am
  • Dears, I've just finished some slides about some cases of designing hbase table schemas. Please have a look here: The cases ...
    Qingyan(Evan) LiuQingyan(Evan) Liu
    Jul 13, 2009 at 6:09 pm
    Jul 16, 2009 at 5:51 pm
  • I'm getting the following error "mapreduce.reduce.class is incompatible with reduce compatability mode " when using: import org.apache.hadoop.mapred.OutputFormat; and setting the reducer output ...
    Yair Even-ZoharYair Even-Zohar
    Jul 14, 2009 at 2:51 pm
    Jul 14, 2009 at 6:18 pm
  • Hi Ramesh, I've had the same problem with Eclipse 3.3 and 3.4. I'm hoping that the just released 3.5 will have it fixed. It always seems to happen when Eclipse tries to auto-complete something from ...
    Dave LathamDave Latham
    Jul 1, 2009 at 2:06 pm
    Jul 30, 2009 at 6:28 pm
  • Hello, I'm sure this is some trivial error, but I a) checked out from svn svn co b) cd in to 0.2 and ran ant and got this error jspc: BUILD ...
    Saptarshi GuhaSaptarshi Guha
    Jul 25, 2009 at 5:14 pm
    Jul 25, 2009 at 5:52 pm
  • Hi Everybody, We have created Spring like classes - *HBaseTemplate, HBaseCallback and HBaseConfigurationFactoryBean* for all the *Spring Framework* fans. This will make it easy to use HBase with ...
    Vaibhav PuranikVaibhav Puranik
    Jul 22, 2009 at 5:29 pm
    Jul 23, 2009 at 5:54 pm
  • Hi all, I am trying to bulk import using my own mapreduce code (doing the insert in my map()). I have modified my to have the following: export ...
    Tim robertsonTim robertson
    Jul 20, 2009 at 4:04 pm
    Jul 20, 2009 at 5:02 pm
  • dears, I'm fresh to hbase. I just checkout hbase trunk rev-792389, and test its performance by means of org.apache.hadoop.hbase.PerformanceEvaluation (Detailed testing results are listed below). It's ...
    Qingyan(Evan) LiuQingyan(Evan) Liu
    Jul 9, 2009 at 9:14 am
    Jul 10, 2009 at 2:46 am
  • Hi, I have just started to work with hbase can any body here tell me how to add a table to the hbase. thanks Muhammad Mudassar
    Muhammad MudassarMuhammad Mudassar
    Jul 8, 2009 at 5:35 am
    Jul 8, 2009 at 7:04 pm
  • Hi list, In current trunk, TableReducer is defined like this: .... public abstract class TableReducer<KEYIN, VALUEIN extends Reducer<KEYIN, VALUEIN, ImmutableBytesWritable, Put .... As VALUEOUT is a ...
    Doğacan GüneyDoğacan Güney
    Jul 7, 2009 at 2:50 pm
    Jul 8, 2009 at 5:39 am
  • Hi, It's the second time it happens. I have a Hadoop job that reads and inserts data into HBase. It works perfectly for a couple of hours and then HBase hangs. I'm using HBase 0.19.3 and Hadoop ...
    Lucas Nazário dos SantosLucas Nazário dos Santos
    Jul 2, 2009 at 2:41 pm
    Jul 3, 2009 at 1:38 am
  • Hello again! Yes, I know some of us are still recovering from OSCON. It's time for another delicious meetup to chat about Hadoop, HBase, Solr, Lucene, and more! UW is quite a pain for us to access ...
    Bradford StephensBradford Stephens
    Jul 27, 2009 at 7:16 pm
    Aug 5, 2009 at 5:38 pm
  • Hi all, Ryan wrote on a different thread: "It should be possible to randomly insert data from a pre-existing data set. There is some work to directly import straight into hfiles and skipping the ...
    Tim robertsonTim robertson
    Jul 27, 2009 at 8:30 pm
    Aug 5, 2009 at 2:58 am
  • Hallo I am running the hadoop version 0.19.1 on a cluster of 4 nodes. The hadoop is working fine. I have installed as well the hbase version 0.19.3 following the guideline in ...
    Xine JarXine Jar
    Jul 27, 2009 at 5:58 pm
    Jul 28, 2009 at 5:28 pm
  • Hi All, We have a cluster with 4 nodes, one for the Master server, and others for Region Server. In our case, there are 3 Downloaders crawling some specific web pages which will be saved in ...
    Angus HeAngus He
    Jul 27, 2009 at 9:48 am
    Jul 28, 2009 at 4:21 am
  • Hi all, I am using a HTable as input to my map jobs and my reducer outputs to another Htable. There are 10 regions of my input HTable. And I have set conf.set("", ...
    Jul 23, 2009 at 11:24 pm
    Jul 27, 2009 at 4:15 am
  • Hi All, Forgive the simple question, as I am pretty new to java development, but what is the recommended way to execute javadoc from the trunk root? Is there a pre-written script to specify the ...
    Travis HegnerTravis Hegner
    Jul 24, 2009 at 6:22 pm
    Jul 24, 2009 at 7:04 pm
  • I've been exploring HBase recently and had originally set up a 0.19 cluster for prototyping, heard that 0.20 has all sorts of performance enhancements and setup another 0.20 cluster on a separate dev ...
    Eric TschetterEric Tschetter
    Jul 24, 2009 at 1:37 am
    Jul 24, 2009 at 5:26 am
  • Hi all , I am new to HBase MR programming . Though i have already used MR on hadoop .. iam facing some difficulties in running my HBase MR job . Details are as follows I have written a file ...
    Bharath vissapragadaBharath vissapragada
    Jul 22, 2009 at 4:57 pm
    Jul 23, 2009 at 5:47 am
  • Hello, I had wrongly assumed that big endian format of integers(or doubles) is lexicographically ordered in the same way as they on the number line, e.g -1 < 1 but ff ff ff ff <= 00 00 00 01 so ...
    Saptarshi GuhaSaptarshi Guha
    Jul 21, 2009 at 12:11 am
    Jul 21, 2009 at 5:23 am
  • I am trying out hbase on my local machine. I ran out of file handles while loading Wikipedia pages into a table as a test: 2009-07-13 18:59:20,223 FATAL ...
    Joel NothmanJoel Nothman
    Jul 13, 2009 at 3:16 pm
    Jul 14, 2009 at 6:43 am
  • Hi I m working on single node hadoop/hbase framework i have created some tables and added some data I want to ask how i can save these tables permanently in hbase as when i restart hbase tables are ...
    Muhammad MudassarMuhammad Mudassar
    Jul 8, 2009 at 1:34 pm
    Jul 10, 2009 at 2:48 pm
  • Hi, I want to disable my table from shell, but it shows region offline. Any ways I can recover from this problem? Thank you Fleming ...
    Jul 8, 2009 at 7:14 am
    Jul 8, 2009 at 8:17 am
  • Hello all, I am using HBase within a Map/Reduce job, and when I run the job, it exits with the following error: 09/07/06 18:34:42 INFO mapred.JobClient: Task Id : ...
    John I. Noecker Jr.John I. Noecker Jr.
    Jul 6, 2009 at 10:41 pm
    Jul 7, 2009 at 4:06 pm
  • Hi, I'm writing my own C++ client for Hbase by making rest calls with libcurl. I have simple set and get working, but have some minor problems that I'm stuck on. One problem is that when I do a put ...
    Adam SilbersteinAdam Silberstein
    Jul 29, 2009 at 8:31 pm
    Jul 31, 2009 at 7:14 pm
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79 users for July 2009

Stack: 70 posts Ryan Rawson: 44 posts Jonathan Gray: 39 posts Bharath vissapragada: 33 posts Jean-Daniel Cryans: 32 posts Tim robertson: 32 posts Andrew Purtell: 25 posts Travis Hegner: 23 posts Y_823910: 20 posts Erik Holstad: 20 posts Llpind: 15 posts Bharath vissapragada: 14 posts Fernando Padilla: 13 posts Vaibhav Puranik: 12 posts Ken Weiner: 11 posts Ninad Raut: 11 posts Saptarshi Guha: 11 posts Angus He: 10 posts Ramesh.Ramasamy: 9 posts Zsongbo: 9 posts
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