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104 discussions - 540 posts

  • Hi, I'm having a problem when running map/reduce on a table with about 500 regions. The MR job shows this kind of excpetions: 11/10/18 06:03:39 INFO mapred.JobClient: Task Id : ...
    Eran KutnerEran Kutner
    Oct 18, 2011 at 10:29 am
    Sep 24, 2012 at 9:24 am
  • I am trying to run the HBase URL application: https://github.com/larsgeorge/hbase-book on my local machine in psuedo-distributed mode using the Cloudera CDH3 but I keep receiving the following error: ...
    MarkMark
    Oct 2, 2011 at 5:20 pm
    May 31, 2012 at 3:10 pm
  • I am able to integrate hadoop 0.20.205.0 with eclipse. But it doesn't have hbase specific jars. By googling I found some articles about only setting base but none of them talks about setting up ...
    Jignesh PatelJignesh Patel
    Oct 18, 2011 at 6:02 pm
    Oct 21, 2011 at 4:37 pm
  • Hi , Is there a known way to be able to do Scan's in parallel (in different threads even) and then sort/combine the output ? For a row key like: prefix-event_type-event_id prefix-event_type-event_id ...
    Sam SeigalSam Seigal
    Oct 5, 2011 at 11:29 pm
    Oct 11, 2011 at 4:13 am
  • Hi, I have been doing a rowcount via mapreduce and its taking about 4-5 hours to count a 500million rows in a table. I was wondering if there are any map reduce tunings I can do so it will go much ...
    RitaRita
    Oct 9, 2011 at 2:50 pm
    Oct 29, 2011 at 9:32 pm
  • While setting Hbase there is a article to setup limit for the file. However I didn't find any appropriate command to setup same in Mac. Please let me know how to setup max file size permanently. ...
    Jignesh PatelJignesh Patel
    Oct 17, 2011 at 5:51 pm
    Oct 19, 2011 at 10:50 pm
  • We have a requirement to build Hbase based system where we have to architect to consume at least 3000-6000 tables. Has anybody done it. I am just wondering how to architect them from relational ...
    Jignesh PatelJignesh Patel
    Oct 24, 2011 at 6:18 pm
    Oct 28, 2011 at 3:04 pm
  • Hbase was working till yesterday but I am seeing following error today. 2011-10-20 11:52:02,329 ERROR org.apache.hadoop.hbase.HServerAddress: Could not resolve the DNS name of unknowne4ce8f3898fc ...
    Jignesh PatelJignesh Patel
    Oct 20, 2011 at 4:03 pm
    Oct 21, 2011 at 11:44 pm
  • Hey all! At first it my seem like a Zookeeper issue, but the thing is that it is very HBase related so I figured to send it to this mailing list as well. I am currently using Zookeeper 3.3.3-cdh3u1, ...
    Ronen ItkinRonen Itkin
    Oct 16, 2011 at 12:32 pm
    Oct 20, 2011 at 6:28 pm
  • According to the HBase book , pre splitting tables and doing manual splits is a better long term strategy than letting HBase handle it. I have done a lot of offline testing with HBase and I am at a ...
    Sam SeigalSam Seigal
    Oct 24, 2011 at 8:28 am
    Oct 27, 2011 at 2:34 am
  • Hi, I am stuck in a problem that I created some table which was not created properly. Its entries are added in .Meta. table but the regions are offline so I wanted to delete the table. I tried to ...
    Stuti AwasthiStuti Awasthi
    Oct 14, 2011 at 12:06 pm
    Oct 18, 2011 at 5:29 am
  • Hi, We're interested in deploying Hbase with hadoop .205 in our sandbox environment. Has anyone tried sizable deployments of hbase with Hadoop 0.20.205? What are your experiences? Thanks, Francis
    Francis Christopher LiuFrancis Christopher Liu
    Oct 31, 2011 at 4:37 am
    Nov 2, 2011 at 9:49 pm
  • Hi guys, I've bulkloaded a solid amount of data (650GB, ~14000 files) into Hbase (1master + 3regions) and now enabling the table results the following behavior on the cluster: 1. Master says that ...
    Matthew TovbinMatthew Tovbin
    Oct 30, 2011 at 2:22 pm
    Oct 31, 2011 at 7:29 pm
  • Hello All, I will be querying a lot of time series data and I have been studying opentsdb. Currently my data looks like this, server#timestamp (epoch)#event id#username Couple of questions: What is ...
    RitaRita
    Oct 28, 2011 at 11:31 am
    Oct 29, 2011 at 12:37 pm
  • Hello folks, I'm just starting with HBase and have a couple of rudimentary questions about how to use it: I have a simple Java program that have been developer for the purpose of learning HBase, the ...
    Syg rafSyg raf
    Oct 10, 2011 at 5:26 am
    Oct 10, 2011 at 3:38 pm
  • In reading the documentation all I've seen suggestions on how to set the value and the default value. However I haven't seen any indication how to set the value to "i don't care store them all" or if ...
    Micah WhitacreMicah Whitacre
    Oct 4, 2011 at 4:20 pm
    Oct 6, 2011 at 3:50 pm
  • Any sugguestion? thx~~
    Eason LeeEason Lee
    Oct 20, 2011 at 2:35 am
    Dec 21, 2011 at 7:12 am
  • How does one deal with the fact that HBase has a single point of failure.. namely the namenode. What steps can be taken to eliminate and/or minimize the impact of a namenode failure? What can a ...
    MarkMark
    Oct 29, 2011 at 6:46 pm
    Dec 15, 2011 at 2:23 am
  • Hi everybody, When the client visit the video of a website through my website, it will be transcoded with our video codec server.As the time goes on,the quantities of the videos is quite large. ...
    XtliwenXtliwen
    Oct 31, 2011 at 7:20 am
    Nov 1, 2011 at 4:15 pm
  • Hi all, We have a requirement to change time of the Hbase cluster. The scene is the cluster changes the ntp server(my customer may do this), We are ready to do this: 1. stop the cluster 2. change the ...
    GaojinchaoGaojinchao
    Oct 25, 2011 at 4:34 am
    Oct 26, 2011 at 7:00 pm
  • Hi there, just saw that there is a JDBC-Driver for HBase. So I wonder if it's possible to persist to HBase via JPA using that JDBC-Driver? For now I still saw in the examples that there are ...
    Christian SchäferChristian Schäfer
    Oct 14, 2011 at 1:27 pm
    Oct 24, 2011 at 9:03 pm
  • Hi all, I have made some perf test about Hive+HBase. The table is a normal 2D table with about 160M rows (each row with 7 small columns) and 32 regions. There is only one column family and all ...
    Weihua JIANGWeihua JIANG
    Oct 12, 2011 at 2:48 am
    Oct 13, 2011 at 9:25 pm
  • We're using Thrift for a fairly write-heavy app. Many of the best practices refer to disabling autoFlush, but I was surprised to see autoFlush not even touched in ...
    Norbert BurgerNorbert Burger
    Oct 12, 2011 at 9:49 pm
    Oct 13, 2011 at 8:57 pm
  • Hallo, I am reading a File containing RDF triples in a Map-job. the RDF triples then are stored in a table, where columns can have lots of versions. So i need to store many values for one rowKey in ...
    Christopher DornerChristopher Dorner
    Oct 1, 2011 at 11:20 am
    Oct 6, 2011 at 8:54 pm
  • Hi, we are experiencing a strange behavior in some tests we are currently performing. What we are seeing is that scans on a table that is being written to at the same time sometimes end prematurely, ...
    Placido RevillaPlacido Revilla
    Oct 3, 2011 at 10:53 am
    Oct 5, 2011 at 7:42 am
  • I am trying to do some simple statistics with my data but its taking longer than expected. Here is how my data is structured in hbase. keys (symbol#epoch time stamp) msft#1319562974#NASDAQ ...
    RitaRita
    Oct 26, 2011 at 10:21 am
    Oct 29, 2011 at 3:27 pm
  • Hi, I am working on a use case that has the following characteristics. 1) Data volume is in the order 30 million records 2) Data schema is known & is fixed (for the application we are building) 3) ...
    Viva vViva v
    Oct 26, 2011 at 7:46 pm
    Oct 27, 2011 at 9:03 pm
  • Hi Friends I am using a mini distributed cluster of 3 nodes. Regionservers are running on all of 3 nodes. This cluster is operational from 2 weeks now without any issue. Today morning I saw one of ...
    Stuti AwasthiStuti Awasthi
    Oct 14, 2011 at 4:45 am
    Oct 14, 2011 at 5:37 pm
  • Hi, I am using CDH3U0 Hadoop and Hbase. I know that HDFS automatically replicates data to multiple data nodes so that when a couple of data nodes fail, the user won't lose any data. I am currently ...
    Edward choiEdward choi
    Oct 12, 2011 at 9:35 am
    Oct 13, 2011 at 12:32 am
  • How efficient it is to use asynch HBase for the performance improvement so that it can be used for accepting real time request from the online web application? https://github.com/danirayan/asynchbase ...
    Jignesh PatelJignesh Patel
    Oct 27, 2011 at 11:24 pm
    Nov 2, 2011 at 9:47 pm
  • Has anybody tried deploying thrift or avro inside JBoss Application server? -Jignesh
    Jignesh PatelJignesh Patel
    Oct 28, 2011 at 8:35 am
    Nov 2, 2011 at 8:58 pm
  • The latest trunk version. Throw this logs: 2011-10-31 00:09:09,549 FATAL org.apache.hadoop.hbase.master.HMaster: Unhandled exception. Starting shutdown. java.io.FileNotFoundException: File does not ...
    GaojinchaoGaojinchao
    Oct 31, 2011 at 4:14 am
    Oct 31, 2011 at 6:13 pm
  • hello,everyone i have test performace of using bulk load to load data into hbase,i only use two PC,the result is 1M byte every one second one PC,Is it right? i am double if i have something error ...
    郑浩郑浩
    Oct 20, 2011 at 4:59 am
    Oct 21, 2011 at 6:27 am
  • Hello everyone, I'm having a really hard time trying to use HBase on a single server in pseudodistributed mode. I have a large instance on Amazon EC2 running Red Hat 6.1 64-bit. We are running the ...
    Sameer FarooquiSameer Farooqui
    Oct 19, 2011 at 10:28 pm
    Oct 20, 2011 at 2:29 am
  • Hi All, When i try to start the hbase master its throwing error as follows. Can anybody please help me with it ? Error: INFO org.apache.hadoop.hbase.master.ActiveMasterManager: ...
    Sooraj SSooraj S
    Oct 19, 2011 at 11:32 am
    Oct 19, 2011 at 4:04 pm
  • I have following setup in my hbase-site.xml <configuration <property <name hbase.rootdir</name <value hdfs://localhost:9000/hbase</value </property <property <name dfs.replication</name <value ...
    Jignesh PatelJignesh Patel
    Oct 12, 2011 at 9:58 pm
    Oct 14, 2011 at 11:43 pm
  • Hi, Would the community recommend looking into Hbase + HDFS for implementing a scalable low latency content store? Any thoughts will appreciated. Thanks
    Jain, KokilJain, Kokil
    Oct 11, 2011 at 4:12 pm
    Oct 12, 2011 at 5:49 pm
  • Hi, I am trying to build cygwin on windos on cygwin and the build fails with the following error: [INFO] [antrun:run {execution: package}] [INFO] Executing tasks main: [mkdir] Created dir: ...
    MayureshMayuresh
    Oct 5, 2011 at 11:21 am
    Oct 10, 2011 at 4:27 pm
  • We have a use case that will require a ten to twenty EC2 node HBase cluster to take several hundred million rows of input from a larger number of EMR instances in daily bursts, and then serve those ...
    Anthony UrsoAnthony Urso
    Oct 7, 2011 at 7:43 pm
    Oct 8, 2011 at 9:33 pm
  • Hi HBase users, Which is the more popular protocol for client applications to connect to HBase? Is it REST, Thrift, or something else? Thanks in advance for any feedback, -- Jim R. Wilson (jimbojw)
    Jim R. WilsonJim R. Wilson
    Oct 4, 2011 at 1:59 pm
    Oct 6, 2011 at 5:34 pm
  • Hallo, i am building a RDF Store using HBase and experimenting with different index tables and Schema Designs. For the input, i have a File where each line is a RDF triple in N3 Format. I need to ...
    Christopher DornerChristopher Dorner
    Oct 1, 2011 at 11:06 am
    Oct 5, 2011 at 1:50 am
  • Hi, This is CDH version hbase-0.90.3-cdh3u1 (my hadoop is also cdh3u1) All my procs are running, when I do a jps it shows, 763 HMaster 564 JobTracker 1782 Jps 353 NameNode 1579 HRegionServer 506 ...
    DanoomistmatisteDanoomistmatiste
    Oct 1, 2011 at 7:51 pm
    Oct 2, 2011 at 12:13 am
  • Hi, HBASE-4552 has been integrated to 0.92 and TRUNK. I was leaning towards either 1) deprecating and keeping the old methods in it in (keeping old rpc version) 2) having a patch available but in not ...
    Ted YuTed Yu
    Oct 31, 2011 at 7:57 pm
    Oct 31, 2011 at 11:30 pm
  • Hi, Hbase version: cdh3-u0/0.90.1 I m trying to use the copytable The arguments are: copytable --peer.adr=<dest:2181:/hbase --new.name=<table _backup <src_table hbase-site.xml of the src hbase should ...
    Sagar naikSagar naik
    Oct 26, 2011 at 8:10 pm
    Oct 27, 2011 at 1:31 am
  • Hello! Could please someone suggest how HBase behaves in following situation: - I have a row with key K (row1) that already present in table. - I'm running a mapreduce job which generates HFile that ...
    Vladimir KlimontovichVladimir Klimontovich
    Oct 24, 2011 at 5:54 pm
    Oct 25, 2011 at 4:44 pm
  • Is there any tutorial to understand large data mining on HBase? We have a requirement to transfer many tables to Hbase? -jignesh
    Jignesh PatelJignesh Patel
    Oct 24, 2011 at 6:11 pm
    Oct 24, 2011 at 9:12 pm
  • Hello, Guys, I'm willing to bulk load data from hdfs folders into HBase, for this purpose I used configureIncrementalLoad method from HFileOutputFormat that configures the job, as follows: ...
    Matthew TovbinMatthew Tovbin
    Oct 18, 2011 at 9:29 am
    Oct 23, 2011 at 10:28 am
  • Hi, I have pretty interesting problem. We've had application which was running on Tomcat while we were using HBase 0.20.3 and before we decided to migrate to HBase 0.90.4 As we migrated successfully, ...
    Dejan MengesDejan Menges
    Oct 22, 2011 at 10:32 pm
    Oct 23, 2011 at 8:18 am
  • Hi: There is a case cause data loss in our cluster. We block in splitLog because some error in our hdfs and we kill master. Some hlog files were moved from .logs to .oldlogs before them were wrote to ...
    Mingjian DengMingjian Deng
    Oct 18, 2011 at 2:41 pm
    Oct 19, 2011 at 6:00 pm
  • I run HBase standalone mode (hbase-0.90.4 (stable)). When I launch in a loop several MapReduce Job and then I try to put something in another table, I have this exception: java.lang.RuntimeException: ...
    JohnJohnGaJohnJohnGa
    Oct 17, 2011 at 5:22 pm
    Oct 18, 2011 at 5:41 pm
Oct 2011
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websitehbase.apache.org

114 users for October 2011

Jean-Daniel Cryans: 56 posts Stack: 45 posts Jignesh Patel: 39 posts Doug Meil: 25 posts Lars hofhansl: 17 posts Ted Yu: 17 posts Rita: 13 posts Sam Seigal: 13 posts Harsh J: 12 posts Stuti Awasthi: 12 posts Ben West: 9 posts Mark: 9 posts Christopher Dorner: 8 posts Matthew Tovbin: 8 posts Andrew Purtell: 7 posts Bryan Keller: 7 posts Christian Schäfer: 7 posts Lucian Iordache: 7 posts Dejan Menges: 6 posts Eason Lee: 6 posts
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