FAQ

Search Discussions

63 discussions - 302 posts

  • Hi, all As I understand, I can stop a region server and a data node in a cluster "semi-transparently" for clients, i. e. the requests handled by the region server at that time will fail, but cluster ...
    Michael DagaevMichael Dagaev
    Feb 24, 2009 at 1:50 pm
    Feb 25, 2009 at 1:30 pm
  • I am trying to import data from a flat file into Hbase using a Map Reduce job. There are close to 2 million rows. Mid way into the job, it starts giving me connection problems and eventually kills ...
    Amandeep KhuranaAmandeep Khurana
    Feb 21, 2009 at 5:44 am
    Feb 21, 2009 at 6:56 pm
  • I've been testing a nuch on HBase and I'm running into an issue with it when it's been running for a while. I'm running hbase 0.19 on a single local host pseudo distributed hadoop 0.19 cluster. After ...
    Andrew McCallAndrew McCall
    Feb 26, 2009 at 10:35 am
    Feb 27, 2009 at 3:59 pm
  • I am trying to improve the read performance of Hbase. Can you suggest me some ideas Using java.
    Shourabh rawatShourabh rawat
    Feb 17, 2009 at 5:32 pm
    Feb 18, 2009 at 6:31 pm
  • Hi, all I read HBASE-974 and HBASE-643 mentioned on the list but what do you think about copying tables from the production to a backup Hbase cluster ? I guess we do need a big iron for such a backup ...
    Michael DagaevMichael Dagaev
    Feb 4, 2009 at 4:21 pm
    Feb 12, 2009 at 11:27 pm
  • Hi, During batch insertion of rows with java client in a table, I have requested a split of this table with the HBase web interface. The insertion process started to slowdown, and I think it's ...
    Jérôme Thièvre INAJérôme Thièvre INA
    Feb 18, 2009 at 4:59 pm
    Feb 19, 2009 at 8:13 am
  • Hi. I'm looking for a way retrieve columns by regular expression. Is in 0.19.0 such functionality ? If not, what do you think the best way to do it ? Thank You and Best Regards. Slava.
    Slava GorelikSlava Gorelik
    Feb 16, 2009 at 6:46 pm
    Feb 17, 2009 at 4:26 pm
  • I try to backup hbase is a brute force, yet a faster method by copying everything under the adoop.tmp.dir which includes the namenode, data etc. That is, I 1) shut down Hbase 2) shout down Hadoo 3 ) ...
    Yair Even-ZoharYair Even-Zohar
    Feb 5, 2009 at 9:34 pm
    Feb 11, 2009 at 5:52 pm
  • Hi, all Does anybody know a rule of thumb to calculate parameters of an Hbase cluster. to handle N read/write requests/sec (100K each) and manage M Tera bytes of data ? For instance, we ran a cluster ...
    Michael DagaevMichael Dagaev
    Feb 3, 2009 at 4:41 pm
    Feb 4, 2009 at 1:02 pm
  • hi, I tried to scan a table with "scan 'table_name'" command in the hbase shell, and hit the following exception: {{{ NativeException: java.lang.RuntimeException: ...
    Liu YanLiu Yan
    Feb 28, 2009 at 4:00 pm
    Mar 16, 2009 at 6:57 pm
  • Greetings, I'm in charge of the data analysis and collection platform at my company, and we're basing a large part of our core analysis platform on Hadoop, Nutch, and Lucene -- it's a delight to use. ...
    Bradford StephensBradford Stephens
    Feb 26, 2009 at 5:02 am
    Mar 1, 2009 at 12:42 am
  • Dear All, I start fresh install of hadoop & hbase 0.19, when i start hbase i got this error : java.io.IOException: File system version file hbase.version does not exist. No upgrade possible. See ...
    WW
    Feb 2, 2009 at 9:16 am
    Feb 4, 2009 at 4:05 am
  • hi, I'm keeping hit following exception after hbase restarted and running a while: 2009-02-26 15:14:04,827 INFO org.apache.hadoop.hbase.regionserver.HLog: Closed ...
    Xiaogang HeXiaogang He
    Feb 27, 2009 at 4:17 am
    Mar 5, 2009 at 1:10 pm
  • Hi, I setup a cluster of 4 machines running hbase. I'm working on a web archiving application that needs to access (randomly) records with request of type : Record record = getClosestRecord(url, ...
    Jérôme Thièvre INAJérôme Thièvre INA
    Feb 18, 2009 at 4:58 pm
    Mar 4, 2009 at 4:42 pm
  • I have being used HBase and Hadoop for 5 months. My testbed have 5node(1mastar and 4slaves) Hadoop-0.19.1 HBase-0.19.0 1. I use the TeraGen mapreduce job of hadoop examples, to generate files with ...
    Schubert zhangSchubert zhang
    Feb 28, 2009 at 10:56 am
    Mar 1, 2009 at 7:24 pm
  • Hi.I have very strange problem with disabling table, calling first time throws this exception : Exception in thread "main" *java.lang.ArrayIndexOutOfBoundsException*: 0 at ...
    Slava GorelikSlava Gorelik
    Feb 19, 2009 at 4:58 pm
    Feb 19, 2009 at 7:32 pm
  • I'm having problems with my region servers dying. Region server and data node log snippets are found below. Here's a synopsis of my configuration... - 4 nodes - Hadoop/Hbase 0.19.0 - ...
    Larry ComptonLarry Compton
    Feb 20, 2009 at 10:49 pm
    Feb 26, 2009 at 5:18 pm
  • Hi, all
    Michael DagaevMichael Dagaev
    Feb 16, 2009 at 3:45 pm
    Feb 16, 2009 at 5:28 pm
  • Hi, I want to create a scanner with a custom filter, but always get the exception below. 1. I have implemented the RowFilterInterface: public abstract class CustomFilter implements RowFilterInterface ...
    Michael SeiboldMichael Seibold
    Feb 9, 2009 at 12:27 pm
    Feb 11, 2009 at 7:02 am
  • I'm trying to run a map and output data to local filesystem on EC2 and run into some problems. prior to hadoop/hbase 19 I was using RawLocalFileSystem rlfs = new RawLocalFileSystem(); Path path = new ...
    Yair Even-ZoharYair Even-Zohar
    Feb 3, 2009 at 10:42 am
    Feb 4, 2009 at 1:52 am
  • hi, We have a 4-node cluster Hadoop 0.19.0 and HBase 0.19.0. We run NameNode and RegionServer on the same server and created a bunch of tables on HBase. Now we want to use another (more powerful) ...
    Liu YanLiu Yan
    Feb 28, 2009 at 3:16 am
    Feb 28, 2009 at 5:01 am
  • Hey, all. I'm doing a bit of a survey of distributed key/value stores out there. HBase looks pretty interesting, nice to see an open source version of BigTable out there. HBase is obviously ...
    David Van CouveringDavid Van Couvering
    Feb 26, 2009 at 6:18 pm
    Feb 26, 2009 at 8:01 pm
  • Hello, I recently upgraded to HBase / Hadoop 0.19.0 and I have some notes to share: == 1. Xcievers. ================== First of all thanks you for this new version. Regarding to the Hadoop setting ...
    Jean-AdrienJean-Adrien
    Feb 23, 2009 at 9:57 am
    Feb 26, 2009 at 5:00 am
  • Hi, all As I understand, if I change the number of open files in /etc/security/limits.conf I have to _reboot_ the computer. Is it correct? Thank you for your cooperation, M.
    Michael DagaevMichael Dagaev
    Feb 23, 2009 at 3:24 pm
    Feb 24, 2009 at 1:42 pm
  • hi, When we run the java client to add data to hbase, from the beginnng we can add the data to hbase. But running for some times, when the client tries to add a record to hbase, it shows the ...
    Liu YanLiu Yan
    Feb 23, 2009 at 6:31 am
    Feb 24, 2009 at 8:56 am
  • Hi all!, I have 3 machines use to run Hadoop/hbase map-reduce. I don't known set value for number map tasks and reduces. How many number of task and reduce in this case? Please, help me! Thanks, ...
    NguyenhuynhNguyenhuynh
    Feb 16, 2009 at 4:14 am
    Feb 16, 2009 at 4:37 pm
  • Hi to All. I have a few questions to ask: 1) Is it possible to bring specific columns from the same row within 1 round trip (some method that takes list of column names and return rowresult) ? 2) Is ...
    Slava GorelikSlava Gorelik
    Feb 5, 2009 at 5:21 pm
    Feb 5, 2009 at 8:38 pm
  • From the HBase documentation (http://wiki.apache.org/hadoop/Hbase/HbaseArchitecture ) 'A column name has the form "<family :<label " where <family and <label can be arbitrary byte arrays' yet in ...
    Toby WhiteToby White
    Feb 4, 2009 at 5:04 pm
    Feb 4, 2009 at 9:23 pm
  • Hi, all We ran an HBase cluster of (1 master/name node + 3 region server/data nodes). We upped the number of open files per process, increased the heap size of the region servers and data nodes to ...
    Michael DagaevMichael Dagaev
    Feb 3, 2009 at 9:59 am
    Feb 3, 2009 at 10:54 am
  • I'd like to write a MapReduce job to update an HBase table in-place, and I'd like to solicit a little guidance. Here's what I think I should do, as well as some questions. Any feedback is ...
    Stuart WhiteStuart White
    Feb 25, 2009 at 5:09 pm
    Feb 26, 2009 at 8:13 pm
  • 3

    TTL

    Dear
    Anh Vũ NguyễnAnh Vũ Nguyễn
    Feb 25, 2009 at 3:45 am
    Feb 25, 2009 at 5:23 am
  • Hi, everybody, I want to use HBase with Jython and followed the instructions of http://wiki.apache.org/hadoop/Hbase/Jython. Every thing goes fine, but the command line editor. I googled and find out ...
    Xiaohui zhangXiaohui zhang
    Feb 20, 2009 at 1:46 am
    Feb 23, 2009 at 1:27 am
  • Hi! I am trying to use the new secondary indexing feature (HBASE-883) on Hadoop/HBase 0.19.0. The org.apache.hadoop.hbase.client.tableindexed package description instructs to do the following: "To ...
    Kirill ShabunovKirill Shabunov
    Feb 20, 2009 at 6:44 pm
    Feb 21, 2009 at 11:50 pm
  • I was thinking weather we can use parallel threads to read data from hbase. Would this improve read performance. How can i create multiple instances of the hbase. using java by the way -- View this ...
    Mirage1987Mirage1987
    Feb 17, 2009 at 4:42 pm
    Feb 17, 2009 at 7:18 pm
  • Hi, I was wondering if hbase is a good fit for the following - storing arbitrary key/values tagged with a single identifier, eg: "8904830324": { "url":"...", "stat":"...", ... } When I say arbitrary ...
    Bill de hOraBill de hOra
    Feb 11, 2009 at 11:50 pm
    Feb 12, 2009 at 9:09 pm
  • Howdy folks, We're evaluating HBase and we're trying to get a good solid picture of how everything fits together... specifically, we're wondering how people commonly setup HBase. I'm imagining you ...
    Sean LaurentSean Laurent
    Feb 3, 2009 at 10:13 pm
    Feb 3, 2009 at 11:40 pm
  • Hi! We are running a small hadoop/hbase cluster on two machines, master and slave. Versions are 0.19. Both machines are running hadoop datanodes and hbase region servers. The master machine is ...
    Ludvig OmholtLudvig Omholt
    Feb 27, 2009 at 2:12 pm
    Feb 27, 2009 at 3:58 pm
  • I had given a count command for a table from the shell. It counted for a while after which it failed with the following error: Current count: 2078000, row: 605428239 NativeException: ...
    Amandeep KhuranaAmandeep Khurana
    Feb 22, 2009 at 8:51 pm
    Feb 22, 2009 at 10:01 pm
  • Hi.From secondary index test i found that index can be created only during column family creation, is it correct ? Is there any way to add new secondary index after column family is created (on ...
    Slava GorelikSlava Gorelik
    Feb 20, 2009 at 10:15 pm
    Feb 20, 2009 at 10:46 pm
  • I'm new to HBase, and I'm trying to create my first table. The "hbase shell" help page shows me how to do that, and I see that there are some attributes I can specify for column families (VERSIONS, ...
    Stuart WhiteStuart White
    Feb 20, 2009 at 4:34 pm
    Feb 20, 2009 at 4:38 pm
  • Hi, I setup a cluster of 4 machines running hbase. I'm working on a web archiving application that needs to access (randomly) records with request of type : Record record = getClosestRecord(url, ...
    JthievreJthievre
    Feb 18, 2009 at 5:38 pm
    Feb 18, 2009 at 5:41 pm
  • Can i use map read to improve the read performance of hbase. I am goin to need random reads. Can i do more than one in parallel. -- View this message in context: ...
    Mirage1987Mirage1987
    Feb 17, 2009 at 4:44 pm
    Feb 17, 2009 at 7:27 pm
  • Hi all, when I running map/reduce job on hadoop/hbase. I found an error in map task: Task attempt_200902131400_0003_m_000000_0 failed to report status for 600 seconds. Killing! Task ...
    NguyenhuynhNguyenhuynh
    Feb 14, 2009 at 1:42 am
    Feb 14, 2009 at 12:19 pm
  • Hi. I'm trying to make hbase (0.19) running on my ubuntu 8.10. Hadoop (0.19) already works in single-node mode: <configuration <property <name fs.default.name</name <value ...
    Sergey BartunovSergey Bartunov
    Feb 11, 2009 at 9:53 am
    Feb 11, 2009 at 1:38 pm
  • Hi, I'm trying to write a M/R job to do the following: - Scan a given table and collect unique column names - Write those column names to another table with the source table name as the row key, and ...
    Tom NicholsTom Nichols
    Feb 10, 2009 at 4:18 pm
    Feb 11, 2009 at 12:37 pm
  • We are planning the 2009 Hadoop Summit, to be held the second week of June in Santa Clara, CA. Please send me (aanand@yahoo-inc.com) your presentation proposals and suggested topics. Areas we plan to ...
    Ajay AnandAjay Anand
    Feb 5, 2009 at 7:26 pm
    Feb 9, 2009 at 1:57 pm
  • In order to speed up a map reduce job operating on HBase input data, we recently added a RowFilter to the input format. However, when trying to execute it, map tasks (one per region) that used to ...
    Dave LathamDave Latham
    Feb 5, 2009 at 12:09 am
    Feb 8, 2009 at 2:08 am
  • Quick question I am seeing lower number of request in the gui then I have seen in 0.18.0 while scanning. I thank part of it is we moved to report per sec request not per 3 secs so the request should ...
    Billy PearsonBilly Pearson
    Feb 4, 2009 at 5:27 am
    Feb 4, 2009 at 5:52 pm
  • Hi, I am using the HBase client API in from a Groovy script: import org.apache.hadoop.hbase.HBaseConfiguration import org.apache.hadoop.hbase.client.HBaseAdmin println new HBaseAdmin( new ...
    Tom NicholsTom Nichols
    Feb 2, 2009 at 5:07 pm
    Feb 4, 2009 at 2:51 am
  • Hi, I'm interesting in scanning for all columns inserted _after_ a certain timestamp. The getScanner methods that take a timestamp return all columns _before_ that time. Is there any way for me to ...
    Tom NicholsTom Nichols
    Feb 3, 2009 at 6:47 pm
    Feb 3, 2009 at 8:11 pm
Group Navigation
period‹ prev | Feb 2009 | next ›
Group Overview
groupuser @
categorieshbase, hadoop
discussions63
posts302
users52
websitehbase.apache.org

52 users for February 2009

Stack: 51 posts Michael Dagaev: 30 posts Jean-Daniel Cryans: 21 posts Amandeep Khurana: 15 posts Slava Gorelik: 15 posts Jonathan Gray: 14 posts Shourabh rawat: 12 posts Ryan Rawson: 10 posts Jérôme Thièvre INA: 9 posts Andrew Purtell: 7 posts Erik Holstad: 7 posts Liu Yan: 7 posts Chris K Wensel: 6 posts Michael Seibold: 6 posts Tom Nichols: 6 posts W: 6 posts Yair Even-Zohar: 6 posts Andrew McCall: 4 posts Billy Pearson: 4 posts Jim Kellerman (POWERSET): 4 posts
show more
Archives