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168 discussions - 1,051 posts

  • Hi, I would like to see how i can attack hbase performance. Right now i am shooting scans returning between 3 and 40 rows and regardless of data size, approximately 500-400 QPS. The data tables are ...
    Dmitriy LyubimovDmitriy Lyubimov
    Apr 19, 2011 at 11:51 pm
    Apr 22, 2011 at 7:57 pm
  • I am doing a load test for which I need to load a table with many rows. I have a small java program that has a for loop and calls HTable.put. I am inserting a map of 2 items into a table that has one ...
    Ajay.govAjay.gov
    Apr 7, 2011 at 2:10 am
    May 18, 2011 at 12:59 pm
  • Hi all, We want to implement a bill query system. We have 20M users, the bill for each user per month contains about 10 0.6K-byte records. We want to store user bill for 6 months. Of course, user ...
    Weihua JIANGWeihua JIANG
    Apr 26, 2011 at 3:07 am
    May 20, 2011 at 3:57 pm
  • I get this occasionally..(not all the time)..Upgrading from 0.20.6 to 0.90.2 Is this issue same as this JIRA https://issues.apache.org/jira/browse/HBASE-3578 I'm using HBaseConfiguration.create() & ...
    VenkateshVenkatesh
    Apr 12, 2011 at 3:00 pm
    Apr 16, 2011 at 7:36 pm
  • Hi all, In this chapter of our 0.89 to 0.90 migration saga, we are seeing what we suspect might be latency related artifacts. The setting: - Our EC2 dev environment running our CI builds - CDH3 U0 ...
    George P. StathisGeorge P. Stathis
    Apr 19, 2011 at 7:09 pm
    Apr 28, 2011 at 7:54 pm
  • I am trying to run a M/R job remotely on a HBAse table. I have added the conf.set("fs.default.name","hdfs://10.0.0.3:60000") to the code hence now it does go to the cluster there I see the error WARN ...
    Sulabh choudhurySulabh choudhury
    Apr 28, 2011 at 7:08 pm
    May 3, 2011 at 2:35 am
  • Seeing this error in the client. I can create new HTable instances fine until I get to this one unit test, then I can't open HTable instances that I could open earlier. As far as I can tell the erro ...
    Pete TylerPete Tyler
    Apr 22, 2011 at 5:32 pm
    Apr 25, 2011 at 3:35 pm
  • Hello guys, I'd like to introduce a new small java project/lib around HBase: HBaseWD. It is aimed to help with distribution of the load (across regionservers) when writing sequential (becasue of the ...
    Alex BaranauAlex Baranau
    Apr 19, 2011 at 6:28 pm
    May 19, 2011 at 1:46 pm
  • Hi, I'm wondering if having a cluster with different machines in terms of CPU, RAM and disk space would be a big issue for HBase. For example, machines with 12GBs RAM and machines with 48GBs. We ...
    Iulia ZidaruIulia Zidaru
    Apr 29, 2011 at 11:06 am
    May 5, 2011 at 3:44 am
  • Hello, I am trying to use completebulkload in HBase 0.90.2 and I get the following exception: 11/04/27 18:45:51 ERROR zookeeper.ZKConfig: no clientPort found in zoo.cfg Exception in thread "main" ...
    Panayotis AntonopoulosPanayotis Antonopoulos
    Apr 27, 2011 at 3:52 pm
    May 12, 2011 at 11:14 am
  • Using hbase-0.90.2..(sigh..) Any tip? thanks java.lang.IndexOutOfBoundsException: Index: 4, Size: 3 at java.util.ArrayList.RangeCheck(ArrayList.java:547) at ...
    VenkateshVenkatesh
    Apr 20, 2011 at 1:04 pm
    Apr 22, 2011 at 3:13 am
  • Hi, We are executing a small scale implementation using HBase. We receive around 200 - 300 MB of data each day for processing.Some of our number crunching and processing are based on this single day ...
    Himanish KusharyHimanish Kushary
    Apr 14, 2011 at 5:42 pm
    Apr 19, 2011 at 2:19 pm
  • I want to update the hbase to 0.90.x from 0.20.6 ,which version should I use now ? and anynone has steps in detail ? -- Thanks & Best regards jiajun
    陈加俊陈加俊
    Apr 1, 2011 at 7:39 am
    Apr 8, 2011 at 6:43 am
  • We've been using HBase for about a year, consistenly running into problems where we lost data. After reading forums and some back and forth with other Hbase users, we changed our data methodology to ...
    Robert GonzalezRobert Gonzalez
    Apr 12, 2011 at 4:57 pm
    Apr 13, 2011 at 7:45 pm
  • Hi, Is it possible that some table cannot cover the whole key space. What I saw was like ==== hbase(main):006:0 put 'table1', 'abc', 'cfEStore:dasd', '123' 0 row(s) in 0.3030 seconds ...
    茅旭峰茅旭峰
    Apr 11, 2011 at 11:51 am
    Apr 13, 2011 at 3:11 pm
  • I'm running into an error when setting the DFS block size to be larger than the default. The following code is used to create the test cluster: Configuration conf = new Configuration(); ...
    Jason RutherglenJason Rutherglen
    Apr 12, 2011 at 6:14 pm
    Apr 13, 2011 at 12:12 am
  • Is it too many regions ? Is the memory enough ? HBase-0.20.6 2011-04-12 00:16:31,844 FATAL org.apache.hadoop.hbase.regionserver.HRegionServer: OutOfMemoryError, aborting. java.lang.OutOfMemoryError: ...
    陈加俊陈加俊
    Apr 12, 2011 at 12:35 am
    Apr 12, 2011 at 5:53 pm
  • Logs are below, is it a deadlock of hbase? How it happens and how to avoid? Found one Java-level deadlock: ============================= "IPC Server handler 9 on 60020": waiting to lock monitor ...
    ZhoushuaifengZhoushuaifeng
    Apr 28, 2011 at 4:09 am
    Apr 29, 2011 at 7:46 am
  • Is https://github.com/facebook/hadoop-20-append the Github branch for Hadoop Append 0.20?
    Jason RutherglenJason Rutherglen
    Apr 7, 2011 at 6:04 pm
    Apr 7, 2011 at 11:12 pm
  • Folks, some help would be greatly appreciated. I'm getting the following NPE while trying a bulk load with the completebulkload tool (see command below). The error is in the zookeeper code that reads ...
    Julio LopezJulio Lopez
    Apr 23, 2011 at 9:57 pm
    May 1, 2011 at 5:53 am
  • Hi, While doing load testing on HBase the entire cluster crashed with errors like these in hbase logs: 2011-04-10 10:14:30,844 WARN org.apache.hadoop.hdfs.DFSClient: Error Recovery for block ...
    Eran KutnerEran Kutner
    Apr 10, 2011 at 3:08 pm
    Apr 14, 2011 at 6:54 am
  • (This could be a known issue. Please let me know if it is). We had a set of uncompacted store files in a region. One of the column families had a store file of 5 Gigs. The other column families were ...
    Vidhyashankar VenkataramanVidhyashankar Venkataraman
    Apr 13, 2011 at 7:41 am
    Apr 13, 2011 at 6:23 pm
  • Hi all, I'm with a startup, GotoMetrics, doing things with Hadoop and I've gotten permission to open source Orderly -- our row key schema system for use in projects like HBase. Orderly allows you to ...
    Michael DaltonMichael Dalton
    Apr 14, 2011 at 12:55 am
    Nov 16, 2011 at 6:18 pm
  • This log message seems to repeat. I wonder if this is common? 2011-04-18 19:40:07,420 DEBUG [RegionServer:0;j-laptop,53922,1303180713318] regionserver.HRegionServer(583): Waiting on ...
    Jason RutherglenJason Rutherglen
    Apr 19, 2011 at 1:49 pm
    Apr 19, 2011 at 6:57 pm
  • It would be super nice to have RPC query call logging per region server. Sometimes we have 'hot' regions getting hit by users, and this drives the CPU on a particular RS server up, except we have no ...
    Jack LevinJack Levin
    Apr 9, 2011 at 7:22 pm
    Apr 13, 2011 at 6:08 pm
  • I merge issue HBASE-3744 to 0.90.2 and test it. Find that Creating table fails when region server shutdown Does it need try to one more times for putting Meta data? public static void ...
    GaojinchaoGaojinchao
    Apr 25, 2011 at 11:25 am
    Apr 27, 2011 at 6:49 am
  • Just upgraded to 0.90.2 from 0.20.6..Doing a simple put to table (< 100 bytes per put).. Only code change was to retrofit the HTable API to work with 0.90.2 Initializing HBaseConfiguration in ...
    VenkateshVenkatesh
    Apr 19, 2011 at 6:38 pm
    Apr 22, 2011 at 6:57 am
  • Hi, I imagine lots of HBase folks have read or will want to read http://blog.milford.io/2011/04/why-i-am-very-excited-about-datastaxs-brisk/ , including comments. My question has to do with one of ...
    Otis GospodneticOtis Gospodnetic
    Apr 19, 2011 at 7:34 pm
    Apr 20, 2011 at 1:02 am
  • I ran across an mailing list posting from 1/4/2009 that seemed to indicate increasing dfs.datanode.handler.count could help improve DFS stability ...
    Andy SautinsAndy Sautins
    Apr 9, 2011 at 11:35 pm
    Apr 18, 2011 at 4:45 pm
  • How does heap memory allocated in regionserver ? Metrics: request=0.0, regions=1283, stores=2304, storefiles=1968, storefileIndexSize=246, memstoreSize=791, compactionQueueSize=0, usedHeap=5669, ...
    陈加俊陈加俊
    Apr 15, 2011 at 4:50 am
    Apr 15, 2011 at 5:15 pm
  • Why delete this code ? // Are there any data nodes up yet? // Currently the safe mode check falls through if the namenode is up but no // datanodes have reported in yet. try { while ...
    GaojinchaoGaojinchao
    Apr 19, 2011 at 2:56 pm
    Jul 23, 2011 at 11:09 pm
  • We were using a backup scheme for our system where we have map-reduce jobs generating HFiles, which we then loaded using LoadIncrementalHFiles before making a remote copy of them using distcp. ...
    Adam PhelpsAdam Phelps
    Apr 28, 2011 at 6:00 pm
    May 2, 2011 at 8:32 pm
  • Hi, I'm now using CDH3u0 at 16nodes cluster (hdp0-hdp15). The configuraiton is below. hdp0: zk + master + region + nn + dn + jt + tt hdp1: zk + master + region + snn + dn + tt hdp2: zk + region + dn ...
    Kazuki OhtaKazuki Ohta
    Apr 20, 2011 at 7:44 pm
    May 30, 2011 at 3:55 am
  • 2011-04-12 06:52:37,784 INFO org.apache.zookeeper.server.PrepRequestProcessor: Got user-level KeeperException when processing sessionid:0x12f48ec06850367 type:create cxid:0x2 zxid:0xfffffffffffffffe ...
    Shahnawaz SaifiShahnawaz Saifi
    Apr 12, 2011 at 12:10 pm
    May 13, 2011 at 7:17 am
  • My map reduce jobs, which were running fine with HBase 0.20.4 with Hadoop 0.20.2 are now failing as I try to upgrade to HBase 0.90.1 with Hadoop 0.20.2-CDH3B4. Under 0.90.1 I see the following error, ...
    Pete TylerPete Tyler
    Apr 26, 2011 at 4:18 am
    Apr 27, 2011 at 5:50 pm
  • Hi, so i enabled metrics with JConsole as described in the metrics page. (well actually some names have changed in hbase-env.sh so it's not verbatim). So what i am seeing is that for rpc metrics on a ...
    Dmitriy LyubimovDmitriy Lyubimov
    Apr 21, 2011 at 6:53 am
    Apr 22, 2011 at 9:45 pm
  • Hi, My HBase deployment has been working great but recently the regionservers always got out of memory error. The symptom is like this: region servers failed with OME, and then I restarted them. One ...
    Weiwei XiongWeiwei Xiong
    Apr 18, 2011 at 1:02 am
    Apr 19, 2011 at 2:50 pm
  • Hello, I'm having an issue with a table I created earlier, testing out LZO compression. For some reason I can't disable/drop the table, since it is constantly in an OPENING state and never gets ...
    Jonathan BenderJonathan Bender
    Apr 14, 2011 at 10:29 pm
    Apr 15, 2011 at 9:35 am
  • The Apache HBase team is happy to announce the general availability of HBase 0.90.2, available from your Apache mirror of choice: http://www.apache.org/dyn/closer.cgi/hbase/ HBase 0.90.2 is a ...
    StackStack
    Apr 8, 2011 at 5:40 pm
    Apr 12, 2011 at 5:49 pm
  • In the HBase pom.xml, the Hadoop branch is 0.20. Will HBase work with the Hadoop 0.20.3 append branch?
    Jason RutherglenJason Rutherglen
    Apr 11, 2011 at 7:10 pm
    Apr 12, 2011 at 12:21 am
  • Hi, First off, I'd like to say thanks to the developers for HBase, it's been fun to work with. I've been using TableInputFormat to run a Map-Reduce job and ran into an issue. Exception in thread ...
    Avery ChingAvery Ching
    Apr 9, 2011 at 4:16 pm
    Apr 11, 2011 at 6:27 pm
  • Hello everybody We've run into this, now popular, error on our cluster 2011-04-07 16:28:00,654 WARN IPC Server handler 0 on 8020 org.apache.hadoop.hdfs.StateChange - DIR* NameSystem.startFile: failed ...
    Daniel IancuDaniel Iancu
    Apr 7, 2011 at 4:35 pm
    Apr 9, 2011 at 7:19 pm
  • Hi I am trying to read from hbase the following code. http://pastebin.com/wvVVUT3p it reads for first 4-5 times but after that it start throwing this exception SEVERE: null ...
    Shuja RehmanShuja Rehman
    Apr 7, 2011 at 4:12 pm
    Apr 7, 2011 at 7:27 pm
  • Hi, I need some help to a schema design on HBase. I have 5 dimensions (Time,Site,Referrer Keyword,Country). My row key is Site+Time. Now I want to answer some questions like what is the top Referrer ...
    Miguel CostaMiguel Costa
    Apr 4, 2011 at 4:12 pm
    Apr 5, 2011 at 5:05 am
  • I'm able to run this job from the hadoop machine (where job & task tracker also runs) /hadoop jar /home/maryama/hbase-0.90.1/hbase-0.90.1.jar rowcounter <usertable But, I'm not able to run the same ...
    VenkateshVenkatesh
    Apr 1, 2011 at 4:07 pm
    Apr 4, 2011 at 6:14 pm
  • Hey all, It would be a considerable help to the developer community if there were a set of mock classes for HTable and friends to help with unit testing. Having MiniHBaseCluster available as a public ...
    Patrick AngelesPatrick Angeles
    Apr 29, 2011 at 1:09 pm
    May 2, 2011 at 3:33 am
  • The HBase book ( http://hbase.apache.org/book/upgrading.html ) states, Does this mean that if we prevent region splits, that it would be possible to rollback to HBase 0.20.6, or are there other data ...
    Dave LathamDave Latham
    Apr 27, 2011 at 6:09 pm
    Apr 28, 2011 at 11:57 pm
  • Modifying the subject to reflect on-going discussion. Stan: I assume you're running my patched version with HBASE-3609 which is not in 0.90 branch. If you start with single region in your table, ...
    Ted YuTed Yu
    Apr 28, 2011 at 4:30 pm
    Apr 28, 2011 at 10:12 pm
  • Hello, with 0.89 HBASE, we see the following, all REST servers get locked on trying to connect to one of our RS servers, the error in the .out file on that Region Server looks like this: Exception in ...
    Jack LevinJack Levin
    Apr 21, 2011 at 5:11 am
    Apr 25, 2011 at 8:16 pm
  • Just to provide a bit more context: here is the log for Zookeeper. I am getting a "NoNode" exception after creating the table in the shell. http://pastebin.com/0bUCYkXb <http://pastebin.com/0bUCYkXb ...
    Jonathan BenderJonathan Bender
    Apr 15, 2011 at 3:24 am
    Apr 15, 2011 at 8:49 pm
Apr 2011
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149 users for April 2011

Stack: 166 posts Jean-Daniel Cryans: 143 posts Ted Yu: 42 posts 陈加俊: 31 posts Dmitriy Lyubimov: 30 posts Ted Dunning: 30 posts Jason Rutherglen: 29 posts Gaojinchao: 27 posts Venkatesh: 24 posts Jack Levin: 22 posts George P. Stathis: 15 posts Andrew Purtell: 14 posts Tsuna: 14 posts 茅旭峰: 14 posts Ajay Govindarajan: 12 posts Gary Helmling: 11 posts Jonathan Bender: 11 posts Peter Haidinyak: 11 posts Pete Tyler: 11 posts Bijieshan: 10 posts
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