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126 discussions - 636 posts

  • Hi all, I'm a brand new user of hbase and hadoop in general. Trying to evaluate hbase for our needs. Question is: why there's BinaryPrefixComparator, but no BinaryRangeComparator, where you specify ...
    Alex VasilenkoAlex Vasilenko
    Feb 9, 2012 at 6:04 pm
    Nov 1, 2013 at 7:25 am
  • while doing map reduce on hbase tables, is it possible to do multiple puts in the reducer? what i want is a way to be able to write multiple rows. if its not possible, then what are the other ...
    T Vinod GuptaT Vinod Gupta
    Feb 28, 2012 at 2:35 pm
    Mar 1, 2012 at 5:29 pm
  • Hi all, We have a 3 node cluster (CD3u2) with the following hardware: RegionServers (+DN + TT) CPU: 2x Intel(R) Xeon(R) CPU E5630 @ 2.53GHz (quad) Disks: 6x250G SATA 5.4K Memory: 24GB Master (+ZK, ...
    Tim RobertsonTim Robertson
    Feb 1, 2012 at 12:52 pm
    Jun 8, 2012 at 1:12 pm
  • Hi, We have a business scenario wherein we need to perform lot of gets for each individual row from a Hbase table. To improve the performance we have used the batch facilities using HTable.batch(...) ...
    Himanish KusharyHimanish Kushary
    Feb 20, 2012 at 6:36 pm
    Feb 28, 2012 at 3:40 am
  • Jacques, Yes. But I still have questions about that. In my system, when users search with a keyword arbitrarily, the query is forwarded to Solr. No any updating operations but appending new indexes ...
    Bing LiBing Li
    Feb 22, 2012 at 5:28 pm
    Feb 23, 2012 at 7:45 pm
  • Dear all, After searching on the Web and asking for help from friends, I noticed that the pseudo distributed configuration in the book, HBase the Definitive Guide, was not complete. Now the ZooKeeper ...
    Bing LiBing Li
    Feb 13, 2012 at 6:10 pm
    Feb 13, 2012 at 7:58 pm
  • Hi, I've got a question about batch read performance in HBase. I've got a nightly job that extracts HBase data (currently upwards of ~300k new rows) added from the previous day. The rows are spread ...
    Jon BenderJon Bender
    Feb 6, 2012 at 4:57 am
    Feb 7, 2012 at 5:25 pm
  • Hello, I read some articles which mention before the client connect to the master node, he will first connect to the zookeeper node and find the location of the root node. So, my question is that the ...
    YonghuYonghu
    Feb 10, 2012 at 11:13 am
    Feb 12, 2012 at 9:21 pm
  • Hi all Recently I have upgraded my cluster from Hbase 0.90.1 to 0.90.4 (using cloudera from cdh3u0 to cdh3u2) Everything was ok till I ran pig extract on the new cluster, from the old cluster ...
    Mikael SitrukMikael Sitruk
    Feb 6, 2012 at 8:34 am
    Feb 20, 2012 at 3:00 pm
  • Hi, Could someone correct the date at http://www.hbasecon.com/ ? Some of us are considering to reserve flight tickets :) Stack sent a mail with Feb 20th as the date, but that site says May 22nd. -- ...
    Dani RayanDani Rayan
    Feb 9, 2012 at 2:04 am
    May 22, 2012 at 6:07 am
  • Dear all, I am a new learner of HBase. I tried to set up my HBase on a pseudo-distributed HDFS. After starting HDFS by running ./start-dfs.sh and ./start-hbase.sh, I started the HBase shell. ./hbase ...
    Bing LiBing Li
    Feb 12, 2012 at 9:01 pm
    Feb 17, 2012 at 4:13 pm
  • Hi~ One customFilter, Override filterKeyValue(KeyValue v). when the filter filterKeyValue a row's first keyValue, it will return "ReturnCode.NEXT_ROW" to jump to next row. But what infact is, the ...
    NNeverNNever
    Feb 21, 2012 at 1:29 pm
    Mar 3, 2012 at 5:37 am
  • Greetings, on a testing platform (running HBase-0.90.3 on top of Hadoop-0.20-append), we did the following : - create a dummy table - put a single row - get this row from the shell - wait a few ...
    Manuel de FerranManuel de Ferran
    Feb 19, 2012 at 12:45 pm
    Feb 22, 2012 at 3:59 pm
  • Hi all, Can anyone elaborate on the pitfalls or implications of running MapReduce using an HFileInputFormat extending FileInputFormat? I'm sure scanning goes through the RS for good reasons (guessing ...
    Tim RobertsonTim Robertson
    Feb 9, 2012 at 8:19 am
    Feb 10, 2012 at 5:06 pm
  • We are on hbase 0.90.4 (cd3u2). We are using the standard hbase export/import for backups. In a test run, our imports ran extremely slow. While a full export of our dataset took about an hour, the ...
    Paul MacklesPaul Mackles
    Feb 20, 2012 at 9:22 pm
    Feb 24, 2012 at 7:28 am
  • Hi there, I checked mvnrepository.com for the 0.92 version of hbase, but it lists only 0.90.5 Has 0.92 been mavenized and released to some repository already? If so, to which? Thanks and cheers, ...
    Ulrich StaudingerUlrich Staudinger
    Feb 7, 2012 at 5:10 pm
    Feb 21, 2012 at 11:11 pm
  • Dear all, I am a new user of HBase. I just finished reading the book, HBase the Definitive Guide. I am implementing a new page sharing system. HBase is a good choice to process big data for me. The ...
    Bing LiBing Li
    Feb 18, 2012 at 2:30 pm
    Feb 18, 2012 at 9:40 pm
  • Hi all, I've been trying to run a battery of tests to really understand our cluster's performance, and I'm employing PerformanceEvaluation to do that (picking up where Tim Robertson left off, ...
    Oliver Meyn (GBIF)Oliver Meyn (GBIF)
    Feb 14, 2012 at 3:57 pm
    Feb 16, 2012 at 9:38 am
  • Hello, I'm getting scanner lease exceptions during mapreduce job [1] after running it for less than 7 minutes. Though I have set hbase.regionserver.lease.period to 600000 (i.e. 10 min) in hbase ...
    Alex BaranauAlex Baranau
    Feb 12, 2012 at 6:42 pm
    Feb 13, 2012 at 4:16 pm
  • Hi, I tried installing hbase on top of hadoop yarn.I get the following error.Any suggestion client1: Exception in thread "main" org.apache.hadoop.ipc.RemoteException: Server IPC version 5 cannot ...
    Raghavendhra rahulRaghavendhra rahul
    Feb 7, 2012 at 9:17 am
    Feb 9, 2012 at 5:43 pm
  • Can anyone provide me with type of bytes used with hbase thrift api.. I read the tutorial and democlient.java but it didnt work out ! So any help plzzzz !! Sent from my iPhone
    Dalia SobhyDalia Sobhy
    Feb 27, 2012 at 10:53 am
    Feb 27, 2012 at 7:19 pm
  • Hi, All I'm new to this email list and hope I can get help from here. My task is to come up with a M/R job in hbase to scan the whole table, find out some data and delete them (delete the whole row), ...
    Haijia ZhouHaijia Zhou
    Feb 21, 2012 at 8:53 pm
    Feb 23, 2012 at 6:37 pm
  • Hi, Lars blog (1) mentions that data locality for the region servers is lost when HBase cluster is restarted. It's also mentioned at the end that work is going in HBase to assign regions to RS taking ...
    Praveen SripatiPraveen Sripati
    Feb 14, 2012 at 1:13 pm
    Feb 22, 2012 at 12:21 am
  • Hi hbasers. A hbase blog regarding coprocessors has been posted to apache blog site. Here is the link: https://blogs.apache.org/hbase/entry/coprocessor_introduction Your comments are welcome. Thanks, ...
    Mingjie LaiMingjie Lai
    Feb 1, 2012 at 8:26 am
    Feb 16, 2012 at 9:12 pm
  • I was increasing the storage on some of my data nodes and thus had to do a restart of the data node. I use cdh3u2 and ran "/etc/init.d/hadoop-0.20-datanode restart" (I don't think this is a cdh ...
    Jeff WhitingJeff Whiting
    Feb 6, 2012 at 6:28 pm
    Feb 7, 2012 at 10:36 pm
  • Hi all, patch to HBASE-4269 removed handling of ScannerTimeoutException from TableRecordReader. Is there a reason for this? We are now seeing a lot of ScannerTimeoutExceptions in our jobs, which were ...
    Jan LukavskýJan Lukavský
    Feb 24, 2012 at 1:08 pm
    May 21, 2012 at 7:29 am
  • Hoping to get an idea from others on this list. Is hbase consulting a good market to focus on these days?
    S AhmedS Ahmed
    Feb 24, 2012 at 7:39 pm
    Mar 2, 2012 at 5:04 am
  • i saw that there is a call for speakers for hbasecon 2012.. i am interested to present from the perspective of somebody using it but not really developing hbase features. so i was wondering if there ...
    T Vinod GuptaT Vinod Gupta
    Feb 23, 2012 at 7:38 pm
    Feb 24, 2012 at 7:23 am
  • Hi, *I want to upgrade our hbase cluster from version 0.20.6 to 0.92, but the hbase book just tell me how to upgrade from version 0.90 to 0.92.* *So I have a doubt that: * *Can I directly upgrade? Or ...
    Jameson LiJameson Li
    Feb 17, 2012 at 4:03 am
    Feb 21, 2012 at 5:03 am
  • Hello, all It's my understanding that it's best practice to colocate thrift on each of the regionservers, and use load balancing to spread queries between them. However, I can't seem to get thrift to ...
    Tomas TilleryTomas Tillery
    Feb 9, 2012 at 7:20 pm
    Feb 10, 2012 at 10:48 pm
  • I have two machine on same network IPs are like *192.168.2.122* and * 192.168.2.133*, suppose hbase (stand alone mode) running on *192.168.2.122, *and i have eclipse or netbeans running on ...
    Shashwat shriparvShashwat shriparv
    Feb 8, 2012 at 2:26 pm
    Feb 9, 2012 at 10:20 am
  • I am trying to connect to an hbase table through a mapper's setup method. But it throws a class not found exception. I have been reading the forums and understood I should be checking if hbase is on ...
    Vrushali CVrushali C
    Feb 8, 2012 at 7:32 am
    Feb 9, 2012 at 6:47 am
  • The Hypertable crew are throwing stones again. See http://highscalability.com/blog/2012/2/7/hypertable-routs-hbase-in-performance-test-hbase-overwhelmed.html if you haven't already. ("Shock! Horror! ...
    StackStack
    Feb 8, 2012 at 4:56 pm
    Feb 9, 2012 at 5:26 am
  • Hi All, I have good experience on Hadoop administration, Pig , Hive and Sqoop. Interested in learning HBase implementations. Could some one please suggest any simple use case to start with ( not a ...
    Srinivas ReddySrinivas Reddy
    Feb 26, 2012 at 6:25 am
    Feb 28, 2012 at 3:16 am
  • Hi all, i have a small basic doubt regarding get() method which is used in HTable. From the hbase book, under 8.3.Client section, i understood that, when ever client sends a request like get(rowKey) ...
    Vamshi KrishnaVamshi Krishna
    Feb 13, 2012 at 6:47 am
    Feb 15, 2012 at 3:11 pm
  • I'm using *HBase-0.92.0rc4*. And there is a problem really confuse me. I defined a CustomFilter to filter some rows, i override the method "* filterRowkey*" to print out which rows the filter has ...
    魏超魏超
    Feb 10, 2012 at 9:14 am
    Feb 13, 2012 at 1:24 am
  • I'm trying to create a time series table that contains a couple of billion rows. It contains daily values for several millions of items. This table will be visible to the outside world, so it should ...
    Paul NickersonPaul Nickerson
    Feb 9, 2012 at 10:12 pm
    Feb 9, 2012 at 11:59 pm
  • Hello All, I am using HBase-0.92.0 and Hadoop-0.23.0 . When attempting to create a table with snappy compression it gets stuck in the PENDING_OPEN state with the following message repeated in the ...
    Peter NaudusPeter Naudus
    Feb 28, 2012 at 9:54 pm
    Apr 23, 2012 at 3:24 pm
  • Greetings, we're planning to move from HBase-0.90.3/Hadoop-0.20-append to HBase-0.92/Hadoop-1.0.0. We did a couple of tests and we have a few questions : on first start, HBase master could not start, ...
    Manuel de FerranManuel de Ferran
    Feb 29, 2012 at 10:05 am
    Mar 2, 2012 at 8:34 am
  • Hiii alll, I decided to share with you my problem, because my professor and colleagues were not able to solve it. First I will tell u my configurations : I made a client and sever for hadoop. The ...
    Dalia SobhyDalia Sobhy
    Feb 29, 2012 at 1:21 pm
    Feb 29, 2012 at 8:10 pm
  • Trying to design a HBase schema for a log processing application. We will get new logs every day. 1) We are thinking we will keep data for each day in separate tables. The table names would be ...
    Something SomethingSomething Something
    Feb 27, 2012 at 6:25 am
    Feb 27, 2012 at 10:30 am
  • I have a up and running Hbase / HDFS installation. Question:How can I ensure that the data is written to HDFS and not the local file system. I am using Pseudo Distributed Hbase installation. The ...
    Admin AbsoftincAdmin Absoftinc
    Feb 24, 2012 at 10:46 am
    Feb 26, 2012 at 3:16 pm
  • Dear all, I created a table as follows. I need to retrieve by the column of "Salary", which is a long type data. Some errors are got as follows. ROW COLUMN+CELL Classmate1 ...
    Bing LiBing Li
    Feb 25, 2012 at 12:25 am
    Feb 25, 2012 at 6:47 am
  • Hello again all, We have had a very successful time with HBase and are now ready to deploy. Our application needs to deal with millions of interactions per day, and is hosted on Amazon. We are ...
    Peter WolfPeter Wolf
    Feb 24, 2012 at 7:21 pm
    Feb 24, 2012 at 10:30 pm
  • Hi, I met with a weird problem when using HBase. There are 3 machines: 1 master and 2 region servers (wlu-rs1/10.27.17.251 and wlu-rs2/10.27.16.11). But when I use "status 'detailed'" to see region ...
    Lu, WeiLu, Wei
    Feb 23, 2012 at 7:50 am
    Feb 24, 2012 at 1:20 am
  • Hi guys, We're currently using 0.90 from the maven repo, and would love to upgrade to 0.92, but can only find a recent 0.92.1 SNAPSHOT release from a few days ago. Are we missing any repos or places ...
    Chris CarterChris Carter
    Feb 22, 2012 at 11:40 pm
    Feb 23, 2012 at 4:25 pm
  • Dear all, After some R n D on schema design in hbase. I am confused how to design corresponding schema of a table in mysql. CREATE TABLE `page_content` ( `crawled_page_id` bigint(20) NOT NULL DEFAULT ...
    Adarsh SharmaAdarsh Sharma
    Feb 22, 2012 at 5:51 am
    Feb 22, 2012 at 6:18 pm
  • Hi, everyone, I often get an NPE during the YCSB load process if timeseries is set and I'm loading lots of records. Here's the syntax I'm using: YCSB Client 0.1 Command line: -load -db ...
    Jean T. AndersonJean T. Anderson
    Feb 18, 2012 at 12:24 am
    Feb 21, 2012 at 5:05 am
  • // I have some sample code (to list hbase tables) that runs on the zookeeper / HMaster node , see below import java.io.IOException; import org.apache.hadoop.conf.Configuration; import ...
    Ryan SmithRyan Smith
    Feb 20, 2012 at 9:11 pm
    Feb 20, 2012 at 10:48 pm
  • Could anyone help Hbase vs MongoDB??
    Dalia SobhyDalia Sobhy
    Feb 18, 2012 at 10:00 pm
    Feb 19, 2012 at 12:24 am
Feb 2012
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134 users for February 2012

Stack: 79 posts Jean-Daniel Cryans: 35 posts Bing Li: 33 posts T Vinod Gupta: 24 posts Doug Meil: 22 posts Ted Yu: 21 posts Dalia Sobhy: 18 posts 魏超: 17 posts Andrew Purtell: 15 posts Bryan Keller: 13 posts Himanish Kushary: 13 posts Jacques: 13 posts Mikael Sitruk: 13 posts Tim Robertson: 12 posts Lars hofhansl: 11 posts Ian Varley: 10 posts Jimmy Xiang: 9 posts Michel Segel: 9 posts Bsnively: 7 posts Harsh J: 7 posts
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