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91 discussions - 461 posts

  • Hi all, I seem to get this error far too frequently: 2010-08-09 09:54:03,685 INFO org.apache.hadoop.hbase.regionserver.Store: Started compaction of 1 file(s) in annotations of ...
    Buttler, DavidButtler, David
    Aug 9, 2010 at 5:03 pm
    Sep 13, 2010 at 11:33 pm
  • I am seeing a couple of regions offlined by the master because of an exception (attached below) at the RS to which the master tried to assign... The following jira says the issue has been resolved: ...
    Vidhyashankar VenkataramanVidhyashankar Venkataraman
    Aug 20, 2010 at 11:54 pm
    Sep 2, 2010 at 4:21 pm
  • Hi, I am using the HBase client API to interact with HBase. I have noticed that HTableInterface has operations such as put(List<Put ), delete(List<Delete ), but there is no similar method for Get. ...
    Imran M YousufImran M Yousuf
    Aug 24, 2010 at 3:35 am
    Nov 10, 2010 at 7:55 am
  • Hi, I just upgraded my 3-node cluster for 0.20.3 to 0.20.6. After I did this, I notice that some of my tables are missing. I recovered the lost tables using add_table.rb. But I am starting to have ...
    Sharma, AvaniSharma, Avani
    Aug 31, 2010 at 6:36 pm
    Sep 16, 2010 at 5:50 pm
  • Hi All I am new to hbase client API and want to know how to get data from hbase from cleint/remote machine. The target is to develop a java program which should connect to hbase server and then get ...
    Shuja RehmanShuja Rehman
    Aug 26, 2010 at 7:42 pm
    Sep 1, 2010 at 9:37 am
  • We are using Hbase 0.20.5 drop with latest cloudera Hadoop distribution. - We are hitting 3 nodes Hbase cluster from a client which has 10 threads each with thread local copy of HTable client object ...
    Abhijit PolAbhijit Pol
    Aug 19, 2010 at 5:16 pm
    Sep 14, 2010 at 7:19 am
  • Hi guys, A couple of days back, I had posted a problem on regions taking too much time to load when I restart Hbase.. I have a table that has around 80 K regions on 650 nodes (!) .. I was checking ...
    Vidhyashankar VenkataramanVidhyashankar Venkataraman
    Aug 28, 2010 at 12:02 am
    Aug 30, 2010 at 6:18 pm
  • Hello, We have just setup a new cluster on EC2 using Hadoop 0.20.2 and HBase 0.20.3. Our small setup as of right now consists of one master and four slaves with a replication factor of 2: Master: ...
    George StathisGeorge Stathis
    Aug 17, 2010 at 6:04 pm
    Aug 18, 2010 at 7:27 am
  • I have a few questions related to reading from hbase - 1. How can I detect a regionserver skew. In other words, one regionserver is being hit more than the others ? When I look at the master log, it ...
    Sharma, AvaniSharma, Avani
    Aug 28, 2010 at 1:29 am
    Sep 7, 2010 at 6:10 pm
  • Hi I am not sure if this is possible in HBase. What I am trying to do is scan on a HBase table with something similar to how SQL would do it. e.g. SELECT * FROM <table WHERE <primary key LIKE ...
    Michelan ArendseMichelan Arendse
    Aug 17, 2010 at 11:51 am
    Aug 24, 2010 at 8:36 pm
  • Hello, I'm seeing errors like so: 010-08-10 12:58:38,938 DEBUG org.apache.hadoop.hbase.client.HConnectionManager$ClientZKWatcher: Got ZooKeeper event, state: Disconnected, type: None, path: null ...
    Stuart SmithStuart Smith
    Aug 10, 2010 at 10:27 pm
    Aug 19, 2010 at 5:21 am
  • Hi, I'm doing an experiment on an 8 node cluster, each of which has 6GB of RAM allocated to hbase region server. Basically, doing a bulk import processing large files, but some imports require to do ...
    Martin ArnandzeMartin Arnandze
    Aug 26, 2010 at 3:08 pm
    Aug 30, 2010 at 6:43 pm
  • I'm currently importing some files into HBase and am running into an problem with a large number of store files being created. We have some back data which is stored in very large sequence files (3-5 ...
    Jeremy CarrollJeremy Carroll
    Aug 12, 2010 at 8:14 pm
    Aug 13, 2010 at 3:19 pm
  • Hi Guys, I know on the client side of HBase there's a configuration" hbase.client.write.buffer". I wonder if there's a similar configuration on the region server side that i can tweak to adjust ...
    Han LiuHan Liu
    Aug 9, 2010 at 5:47 pm
    Aug 11, 2010 at 4:48 pm
  • I have a cluster of 3 machines where the NameNode is separate from the HMaster based on the distribution from Cloudera (CDH3). I have been running it successfully for a couple weeks. As of this ...
    Matthew LeMieuxMatthew LeMieux
    Aug 23, 2010 at 11:23 pm
    Aug 25, 2010 at 7:03 pm
  • I seem to have gotten into some version mismatch issues.. When I try to start HBAse 0.89 along with Hadoop 0.20.100, Hbase fails to start up with these errors in the namenode whioch leads to ...
    Vidhyashankar VenkataramanVidhyashankar Venkataraman
    Aug 18, 2010 at 2:42 am
    Aug 22, 2010 at 3:42 am
  • Hi, There: does anybody know of a good combination of centos version and jdk version that works stably ? I am using centos version Linux 2.6.18-194.8.1.el5.centos.plus #1 SMP Wed Jul 7 11:45:38 EDT ...
    Jinsong HuJinsong Hu
    Aug 13, 2010 at 6:27 pm
    Aug 13, 2010 at 8:32 pm
  • Thanks to the help of people on this mailing list and Cloudera, our team has managed to get our 3 data node cluster with HBase running like a top. Our import rate is now around 3 GB per job which ...
    Luke ForehandLuke Forehand
    Aug 3, 2010 at 3:41 pm
    Aug 4, 2010 at 10:11 pm
  • Is there a way to specify an initial and max heap size to hbase ? Giving 4G to HBASE_HEAPSIZE fails to start the JVM. Thanks, Avani Sharma
    Sharma, AvaniSharma, Avani
    Aug 31, 2010 at 5:44 pm
    Sep 2, 2010 at 12:50 am
  • Hello, I'm missing several .regioninfo files for several of my regions. Not sure why or when. But after an addtable rebuild of the .META. entries - I get errors about "No server address listed in ...
    Stuart SmithStuart Smith
    Aug 23, 2010 at 8:04 pm
    Aug 26, 2010 at 6:35 am
  • Hello, I tried to write custom HBase scanner in Java. It compiles successfully, but I have problem with running it. I always get exception: Exception in thread "main" java.lang.NoClassDefFoundError: ...
    Wojciech LangiewiczWojciech Langiewicz
    Aug 18, 2010 at 10:09 am
    Aug 19, 2010 at 9:50 am
  • Hi, A fellow co-worker was asking some questions and while I thought I might know the answer I wasn't 100% sure that I was right. So I figure its better to be safe than sorry, and forward the ...
    Michael SegelMichael Segel
    Aug 13, 2010 at 6:28 pm
    Aug 13, 2010 at 9:10 pm
  • I am trying to run an update (inserts and modify operations) experiment on a 100 TB existing database.. The job is a map-only job that doesn't use TableOutputFormat (since mappers cannot possibly ...
    Vidhyashankar VenkataramanVidhyashankar Venkataraman
    Aug 4, 2010 at 6:28 pm
    Aug 5, 2010 at 5:10 am
  • Dear experts, Could you kindly suggest, how to help the RegionServer to complete initialization in the following situation: After a failure of one or RegionServers, which is running on a dedicated ...
    Andrey TimerbaevAndrey Timerbaev
    Aug 26, 2010 at 3:17 pm
    Sep 13, 2010 at 11:56 pm
  • Hi all, I'd like to delete a range of table, but could not find a convenient api. One work around is first scan the range of table and then invoke delete operation for each row. This seems not so ...
    Jeff ZhangJeff Zhang
    Aug 20, 2010 at 1:52 am
    Sep 10, 2010 at 8:41 pm
  • I'm running map/reduce jobs from java app (table mapper & reducer) in true distributed mode..I don't see anything in jobtracker page..Map/reduce job runs fine..Am I missing some config? thanks ...
    Aug 27, 2010 at 1:24 am
    Aug 27, 2010 at 4:23 am
  • Hi, I need some clarification on the following issues - 1. TransactionalTable seems to be present in the current API docs, does that mean it will be present in the course of 0.89 and continue to ...
    Imran M YousufImran M Yousuf
    Aug 19, 2010 at 4:57 am
    Aug 19, 2010 at 6:47 pm
  • Hi All, I set off a long-running loading job over the weekend and it seems to have rather destroyed my hbase cluster. Most of the nodes were down this morning and upon restarting them, I'm now ...
    Jamie CockrillJamie Cockrill
    Aug 2, 2010 at 1:17 pm
    Aug 3, 2010 at 5:15 pm
  • Hi, I have a scenario of which I'm not sure if it is just another example of issue HBASE-1485, or if it is another but related issue : Write 3 cells of a column, at timestamp 1, 2 and 3. Then update ...
    Evert ArckensEvert Arckens
    Aug 20, 2010 at 1:18 pm
    Sep 6, 2010 at 6:54 pm
  • No matter what I tell it, this seems to return Row IDs from the beginning of the table. code public List<String getKeys(String lastDoc, int N) { List<String results = new ArrayList<String (); try { ...
    Kelvin RawlsKelvin Rawls
    Aug 30, 2010 at 3:27 pm
    Aug 31, 2010 at 5:17 pm
  • hi i was wondering if someone could help me with an hbase setup. i have a cluster of 2 machines and I get this error when creating a table FATAL zookeeper.HQuorumPeer: The server in zoo.cfg cannot be ...
    Shuja RehmanShuja Rehman
    Aug 27, 2010 at 9:50 am
    Aug 27, 2010 at 6:40 pm
  • Hi I have a question about getting the data from hbase. I have created a table and adding rows like this put "blogposts","post1","post:author","MyAuthoor" put ...
    Shuja RehmanShuja Rehman
    Aug 22, 2010 at 10:06 am
    Aug 22, 2010 at 4:13 pm
  • There appears to be a disconnect between the API [1] and the implementation [2] of checkAndPut() regarding the expected value parameter when the caller wants to make the put conditional on the row ...
    John BeattyJohn Beatty
    Aug 15, 2010 at 1:33 am
    Aug 16, 2010 at 5:35 pm
  • Can you guys help me with these questions? 1) Consistency guarantees for reads in Hbase: What happens when you issue a direct bulk incremental update without using the API? Say, a new storefile is ...
    Vidhyashankar VenkataramanVidhyashankar Venkataraman
    Aug 13, 2010 at 10:39 pm
    Aug 14, 2010 at 12:18 am
  • Hi, We are going to use HBase to store our large volume of pretty structured data. Every day, we will have about 24 new roles added to one table. After three months, there will be about 4,000,000,000 ...
    Yu BadyYu Bady
    Aug 11, 2010 at 5:55 am
    Aug 12, 2010 at 5:53 pm
  • Hi, Continuing with testing HBase suitability in a high ingest rate environment, I've come up with a new stumbling block, likely due to my inexperience with HBase. We want to keep and purge records ...
    Thomas DowningThomas Downing
    Aug 6, 2010 at 12:50 pm
    Aug 6, 2010 at 4:08 pm
  • Hi, I want to enable LZO compression on my cluster but see there are a few alternatives and the wiki page itself is very confusing so it's not clear what is the right choice. I was looking at this ...
    Eran KutnerEran Kutner
    Aug 2, 2010 at 10:26 am
    Aug 3, 2010 at 12:02 am
  • HI~~ I installed the hbase on one pc of linux, no hadoop, no zookeeper, just standalone mode now I want use hbase by it's API , I develop java programe in eclipse on another PC of windows, I have add ...
    Aug 2, 2010 at 2:21 pm
    Feb 28, 2011 at 5:23 pm
  • Hi, I have a query regarding what is the best practice regarding opening a HTable when using the client API. I am using a web application to read and write to HBase. I have several HTables I will be ...
    Imran M YousufImran M Yousuf
    Aug 22, 2010 at 6:05 am
    Sep 1, 2010 at 12:27 pm
  • Hi I am trying to implement equivalent of this query in Hbase *SELECT *value1, value2, value3 , (value1+value2) as calculatedValue *FROM *myTable *WHERE *year=2010 and month in (2,4,6) and day= ...
    Shuja RehmanShuja Rehman
    Aug 27, 2010 at 9:34 pm
    Aug 29, 2010 at 4:14 am
  • My hbase table issued a mass split after I loaded regions with greater sizes than maxfilesize.. (my bad..) Now, when I try accessing the master through the web interface, it just hangs... And, if I ...
    Vidhyashankar VenkataramanVidhyashankar Venkataraman
    Aug 26, 2010 at 7:00 pm
    Aug 26, 2010 at 8:23 pm
  • I was trying to scan the META table of a hbase instance.. And it is unable to.. On further inspection, the region server that hosts the meta tableis filled with exceptions like the following in its ...
    Vidhyashankar VenkataramanVidhyashankar Venkataraman
    Aug 24, 2010 at 11:41 pm
    Aug 25, 2010 at 12:53 am
  • Can 0.89.x work with a hadoop version that doesn't support append? Vidhya
    Vidhyashankar VenkataramanVidhyashankar Venkataraman
    Aug 23, 2010 at 5:42 pm
    Aug 23, 2010 at 5:53 pm
  • Hi All I am new to HBase and I have one question which can be best described by the following scenario. Suppose I have three tables BaseCategory,Category and products. If i am thinking in terms of ...
    Shuja RehmanShuja Rehman
    Aug 20, 2010 at 11:48 am
    Aug 22, 2010 at 10:57 am
  • I am currently running under Hbasev0.20.3. I increased the block cache to .4 from .2. The heap size is 2GB. The default regionserver handler count is 25 in hbase-default.xml. Will try LZO ...
    Sharma, AvaniSharma, Avani
    Aug 20, 2010 at 12:53 am
    Aug 21, 2010 at 12:29 am
  • Hello, We are trying to recover a corrupt META table over here. The region server holding the META table went down, and since then our table scans cannot complete because of this error which happens ...
    Luke ForehandLuke Forehand
    Aug 18, 2010 at 3:03 pm
    Aug 20, 2010 at 10:50 am
  • Dear All: I have been looking around HBase (running/debugging it, etc) for a couple of weeks now, and it is fascinating. I am in search of a good project for my grad studies, focussing around HBase, ...
    Himanshu VashishthaHimanshu Vashishtha
    Aug 19, 2010 at 9:48 am
    Aug 19, 2010 at 7:27 pm
  • I am having issues performing any operations (list/create/put) on my hbase instance once it starts up. The environment: Red Hat 5.5 Hadoop 0.20.2 HBase 0.20.4 java 1.6.0_20 1 running master 23 ...
    Marchwiak, Patrick D.Marchwiak, Patrick D.
    Aug 13, 2010 at 11:50 pm
    Aug 14, 2010 at 12:36 am
  • Hi; I want to learn the hbase background architecture. Can u suggest an article or something like that? thanks regards...
    Burak ISIKLIBurak ISIKLI
    Aug 13, 2010 at 10:28 am
    Aug 13, 2010 at 10:27 pm
  • During some testing of a small development cluster, one of the RegionServers that we employ has an issue with a bad RAM stick. So when it gets into heavy RAM operation it likes to crash. Here is my ...
    Jeremy CarrollJeremy Carroll
    Aug 13, 2010 at 9:45 pm
    Aug 13, 2010 at 10:26 pm
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86 users for August 2010

Jean-Daniel Cryans: 55 posts Stack: 49 posts Ryan Rawson: 34 posts Vidhyashankar Venkataraman: 29 posts Shuja Rehman: 18 posts Ted Yu: 16 posts Michael Segel: 11 posts Imran M Yousuf: 10 posts Jeremy Carroll: 10 posts Jonathan Gray: 10 posts Stuart Smith: 10 posts Sharma, Avani: 9 posts Todd Lipcon: 9 posts Andrey Stepachev: 8 posts Luke Forehand: 8 posts Jeff Zhang: 7 posts Venkatesh: 7 posts Xiujin yang: 7 posts Matthew LeMieux: 6 posts Edward Capriolo: 5 posts
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