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87 discussions - 428 posts

  • Hello Everyone, About one or two months ago, we made a test program which inserts one web page per 10ms into hbase, but after running it we got many exceptions and many regionservers shutdown very ...
    Zheng LvZheng Lv
    Sep 27, 2009 at 9:45 am
    Nov 27, 2009 at 7:23 am
  • Hi: Does anyone have experience with both Cassandra and HBase? To me, they target at a similar problem. I am wondering what are main differences between these two, like ...
    Charles duCharles du
    Sep 1, 2009 at 6:46 pm
    Sep 4, 2009 at 6:44 am
  • Hi users, The Region Historian (the page in the web UI that you get when you click on a region name) has been in use since HBase 0.2.0 and it caused more than its share of problems. Furthermore, we ...
    Jean-Daniel CryansJean-Daniel Cryans
    Sep 18, 2009 at 12:38 am
    Sep 22, 2009 at 12:11 am
  • It appears that the hbase client is trying to connect to the server at This is not the desired behavior, but am not sure how to correct it. The client (JBOSS) has the following jars ...
    David PeronaDavid Perona
    Sep 11, 2009 at 8:08 pm
    Sep 12, 2009 at 9:47 pm
  • Hi, I'm trying to migrate my solution to Amazon EC2 but the following errors crack HBase. I'm using HBase and Hadoop 0.20.0. Does anybody know what may be the cause of it? Lucas HBASE MASTER ...
    Lucas Nazário dos SantosLucas Nazário dos Santos
    Sep 16, 2009 at 1:22 pm
    Sep 18, 2009 at 7:06 pm
  • Hopefully I am doing something wrong and y'all can help me see it. I am working on an application that utilizes Hbase for real-time queries. The dependency on Hbase is not critical so if HBase is not ...
    Barney FrankBarney Frank
    Sep 15, 2009 at 10:13 pm
    Sep 18, 2009 at 7:42 am
  • Hi there, Any quick way that I can save my data(12G) to HBase? Thanks Fleming --------------------------------------------------------------------------- TSMC PROPERTY This email communication (and ...
    Sep 1, 2009 at 9:49 am
    Sep 2, 2009 at 10:21 am
  • Hello all, I've been working with HBase for the past few months on a proof of concept/technology adoption evaluation. I wanted to describe my scenario to the user/development community to get some ...
    Molinari, GuyMolinari, Guy
    Sep 22, 2009 at 10:14 pm
    Sep 24, 2009 at 11:53 pm
  • After setting up a test table with about 250K rows, I wanted to enable lzo compression on it. In the shell, I disabled and altered the table and then ran major_compaction. This is the result: ...
    Igor RanitovicIgor Ranitovic
    Sep 2, 2009 at 7:57 pm
    Sep 12, 2009 at 9:16 pm
  • Hi, I'm trying to use some filters and the results are not like expected. Maybe there it's a bug. I'm using HBase 0.20.0 RC3 I'm trying to filter rows using SingleColumnValueFilter like this: Scan s ...
    Adrian OlariuAdrian Olariu
    Sep 3, 2009 at 5:09 pm
    Sep 7, 2009 at 8:33 pm
  • Hallo, I have a cluster of 6 nodes running hadoop0.19.3 and hbase 0.19.1. I have managed to write small programs to test the settings and everything seems to be fine. I wrote a mapreduce program ...
    Xine JarXine Jar
    Sep 1, 2009 at 2:53 pm
    Sep 2, 2009 at 2:36 pm
  • Hbase runs perfectly well as long as it manages zookeeper Katta runs well on EC2 However, when running katta (which is based on internal zookeeper management) I'm getting some zookeeper errors from ...
    Yair Even-ZoharYair Even-Zohar
    Sep 1, 2009 at 10:34 am
    Sep 1, 2009 at 6:18 pm
  • Hello, I am trying to use a RowFilter and continue to get the following error: Exception in thread "main" org.apache.hadoop.hbase.client.RetriesExhaustedException: Trying to contact region server ...
    Bluemetrix DevelopmentBluemetrix Development
    Sep 30, 2009 at 7:53 pm
    Nov 12, 2009 at 5:25 pm
  • Hi all, Being in the process of evaluating hbase for managing "bigtable" (to give an idea ~ 1G entries of 500 bytes). We are now facing some issues and i would like to have comments concerning what i ...
    Guillaume VilandGuillaume Viland
    Sep 16, 2009 at 3:36 pm
    Sep 21, 2009 at 5:05 pm
  • Hello. We are trying to use Hbase in a threaded application and are encountering an issue with the ZooKeeper connection being lost: org.apache.hadoop.hbase.client.NoServerForRegionException: Timed ...
    Sep 10, 2009 at 1:08 am
    Sep 11, 2009 at 12:39 am
  • The third hbase 0.20.0 release candidate is available for download: http://people.apache.org/~stack/hbase-0.20.0-candidate-3/<http://people.apache.org/%7Estack/hbase-0.20.0-candidate-2/ ...
    Sep 3, 2009 at 7:21 am
    Sep 8, 2009 at 4:40 pm
  • Hi, We've been setting up our architecture at work using HBase quite extensively but since we are developing in Python we have chosen to sue Thrift to converse with the HBase cluster. Now it does ...
    Sylvain HellegouarchSylvain Hellegouarch
    Sep 3, 2009 at 8:05 am
    Sep 3, 2009 at 2:50 pm
  • Our HBase system ended up in a looping situation trying to continuously re-assign a damaged region across the HBase cluster. We could not properly scan or store data in the affected table. The ...
    Sep 28, 2009 at 10:27 pm
    Oct 2, 2009 at 2:41 pm
  • Greetings, It's time for another Hadoop/Lucene/Apache"Cloud" Stack meetup! This month it'll be on Wednesday, the 30th, at 6:45 pm. We should have a few interesting guests this time around -- someone ...
    Bradford StephensBradford Stephens
    Sep 14, 2009 at 6:35 pm
    Sep 29, 2009 at 6:53 am
  • I'm working on a map/reduce java program for performing a comparison of columns in a single record and then reporting the percent matched. From what I have read the comparison portion would occur ...
    Sep 25, 2009 at 9:10 pm
    Sep 28, 2009 at 7:14 pm
  • We have a couple clusters running with lzo compression. When testing the new 0.20.1 release I setup a single node cluster and reused the compression jar and native libraries from the 0.20.0 release. ...
    Sep 23, 2009 at 11:15 pm
    Sep 25, 2009 at 12:03 am
  • I think that it is not possible change the primary key of a row, and I need to copy any data I want over to a row with the new key and then delete the old one, but I wanted to check. I'm planning on ...
    Kevin PetersonKevin Peterson
    Sep 2, 2009 at 8:30 pm
    Sep 15, 2009 at 1:30 am
  • Hi, all I am a newbie to hadoop and just begin to play it recent days. I am trying to write a mapreduce program to parse a large dataset (about 20G) to abstract object id and store to HBase table. ...
    Sep 29, 2009 at 8:45 am
    Oct 8, 2009 at 6:16 pm
  • Hi there: I was running a shell ( in parallel on multiple machines) that encloses a few programs accessing HBase. At some point all the programs are all suspended, and later I found the reason was ...
    Yabo-Arber XuYabo-Arber Xu
    Sep 30, 2009 at 1:59 am
    Sep 30, 2009 at 3:48 am
  • Hello, I tried to post these logs in reply of last mail, but I got these: This is an automatically generated Delivery Status Notification Delivery to the following recipient failed permanently: ...
    Zheng LvZheng Lv
    Sep 28, 2009 at 1:40 am
    Sep 28, 2009 at 3:07 am
  • Hi: I installed hbase 0.19.3. I tried a bunch of table creation/insertion a while ago, and it worked. When I tried to create a table today, I got an error message complaining about no region server. ...
    Charles duCharles du
    Sep 21, 2009 at 10:12 pm
    Sep 22, 2009 at 3:35 am
  • When we try to connect to hbase running on an ec2 server from a machine outside ec2, the regionserver on port 60020 is trying to connect to the internal ip address rather than the external dns i feel ...
    Ananth T. SarathyAnanth T. Sarathy
    Sep 14, 2009 at 5:31 pm
    Sep 15, 2009 at 1:36 am
  • Ok. Thanks for answering the questions. Could you do something like the below? + One table keyed by timestamp with an additional qualifier of some sort -- random if you have to -- so each event is a ...
    Sep 4, 2009 at 4:51 pm
    Sep 4, 2009 at 6:14 pm
  • Is this functionality available in the current implementation? If not, is there any plans on this? -- Regards Angus
    Angus HeAngus He
    Sep 1, 2009 at 8:29 am
    Sep 2, 2009 at 5:10 am
  • HI all, I am in the process of migrating a relational table to Hbase. Current table: records user access logs id : PK userId url timestamp refer_url ip_address cc : country code of ip address my ...
    Sujee ManiyamSujee Maniyam
    Sep 29, 2009 at 10:11 pm
    Oct 1, 2009 at 8:59 pm
  • been trying to reduce my storefileIndexSize default setting hfile.min.blocksize.size = 65536, storefileIndexSize=323 hfile.min.blocksize.size = 67108864, storefileIndexSize=322 I changed the ...
    Billy PearsonBilly Pearson
    Sep 19, 2009 at 8:52 pm
    Sep 30, 2009 at 9:24 pm
  • Attached is a stand alone utility to test compression compatibility before starting hbase: # ./hbase org.apache.hadoop.hbase.test.HFileCompressionTest Usage: HFileCompressionTest hdfs compression ...
    Sep 29, 2009 at 8:47 pm
    Sep 30, 2009 at 3:48 pm
  • Hey, I'm trying to make a simple Map/Reduce program to upload about data into an HTable, but all example code I've found uses jobconf, which is deprecated. I've been using Job and Configuration, but ...
    Mark VigeantMark Vigeant
    Sep 25, 2009 at 3:04 pm
    Sep 29, 2009 at 4:13 pm
  • Hi, I use Hadoop 0.19.1 and HBase 0.19.3. I write a simple table which have 2 column families (Level0:trail_id, Level1:trail_id). And I put the data (4 rows) into hbase table: 120_25 ...
    Sep 22, 2009 at 10:10 am
    Sep 23, 2009 at 5:49 am
  • Hallo, I have already written several simple mapreduce applications always 1 job/application. Assume I want to write a more complex application !! Can someone tell me what is the advantage of ...
    Xine JarXine Jar
    Sep 10, 2009 at 1:53 pm
    Sep 11, 2009 at 6:37 pm
  • This questions belongs to the user mailing list btw. I do not use Pig so I can't comment on it, but what will really do with HBase is making it easy to do batch processing on HBase tables. No live ...
    Jean-Daniel CryansJean-Daniel Cryans
    Sep 3, 2009 at 3:39 pm
    Sep 10, 2009 at 2:35 pm
  • Hi: I installed hbase 0.19.3 and hadoop 0.19.1. I tried to run the BulkImport example on http://wiki.apache.org/hadoop/Hbase/MapReduce, get the following error. ...
    Charles duCharles du
    Sep 9, 2009 at 1:13 am
    Sep 9, 2009 at 10:47 pm
  • I have had a great time working through the awesome Hbase 0.20.0 client api as I write my first web app with data persisted by HBase on HDFS. However the time has come to write my first map/reduce ...
    Keith ThomasKeith Thomas
    Sep 8, 2009 at 7:52 pm
    Sep 9, 2009 at 5:36 pm
  • Hi, I have the following two client api related questions: 1) Is there any way I can prevent a scanner from getting all the columns? I wan to only get row keys and go through them. 2) I couldn't find ...
    Vaibhav PuranikVaibhav Puranik
    Sep 5, 2009 at 12:21 am
    Sep 7, 2009 at 6:34 am
  • What does it mean when the following INFO message appears in the RegionServer logs? I generally see that message show up on all RegionServers at the same time. ...
    Ken WeinerKen Weiner
    Sep 3, 2009 at 12:51 am
    Sep 3, 2009 at 5:26 pm
  • Is there no optional memstore flush anymore? I recall in 0.19 the memcache would flush every so-often and you could configure this period (optional cache flush interval). Digging through now, I don't ...
    Clint MorganClint Morgan
    Sep 23, 2009 at 8:23 pm
    Sep 23, 2009 at 10:01 pm
  • Hi all, I am a newbie doing some research to put-together a system to process large number of log-records. A) Hbase system with clients executing MR jobs on the data B) there may be some instances ...
    Sujee ManiyamSujee Maniyam
    Sep 18, 2009 at 1:19 am
    Sep 18, 2009 at 2:46 am
  • Hi everyone, After running the following code: Scan scan = new Scan("0000".getBytes(), "9999".getBytes()); scan.addColumn("foobar"); scan.setFilter(new QualifierFilter(CompareOp.EQUAL, new ...
    Angus HeAngus He
    Sep 10, 2009 at 9:12 am
    Sep 11, 2009 at 3:14 am
  • Hallo, can someone lead me to a good documentation with examples, explaining the principle of using filters on hbase in a mapreduce program? Thank you
    Xine JarXine Jar
    Sep 8, 2009 at 8:10 am
    Sep 8, 2009 at 7:29 pm
  • The application I am building against HBase has a need for simple numeric keys, the key for the first row inserted into a table should be 1, the second row 2, etc. I am working on HBase 0.20 RC1 ...
    Keith ThomasKeith Thomas
    Sep 2, 2009 at 11:11 pm
    Sep 2, 2009 at 11:50 pm
  • Hi, For those interested, I want to tell the HBase community more about the experimental results Raghu Ramakrishnan presented at VLDB last week, and where we in Yahoo! Research are going from here. ...
    Adam SilbersteinAdam Silberstein
    Sep 2, 2009 at 8:26 pm
    Sep 2, 2009 at 10:18 pm
  • We have an issue with 0.20.0 where we did a shutdown and a start up and lost access to the tables. Is there a tool to repair issues like this? How do we go about fixing this manually? Creating a new ...
    Sep 16, 2009 at 1:25 am
    Oct 6, 2009 at 5:17 pm
  • Is it a good use case to store realtime logs into hbase? I am thinking of using unix timestamp as the key, and we have 100K/rows per seconds, and 100 bytes per row (about 10MB/second). Users can do ...
    Zheng ShaoZheng Shao
    Sep 30, 2009 at 1:17 am
    Sep 30, 2009 at 3:58 am
  • hi, I'm trying to run a fully-distributed operation. When I start the Hbase, I get the following output: starting master, logging to /home/cloud/hbase/bin/../logs/hbase-cloud-master-debian-5.out ...
    Le ZhouLe Zhou
    Sep 25, 2009 at 1:07 am
    Sep 25, 2009 at 8:09 am
  • I asked about the best way to process a large quantity of smaller XML files using Hadoop mapred, on the main Hadoop mailing list, and was advised that HBase would be a good alternative to handle ...
    Andrzej Jan TaraminaAndrzej Jan Taramina
    Sep 23, 2009 at 9:02 pm
    Sep 23, 2009 at 11:00 pm
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81 users for September 2009

Stack: 80 posts Andrew Purtell: 33 posts Jonathan Gray: 29 posts Jean-Daniel Cryans: 23 posts Ryan Rawson: 20 posts Zheng Lv: 15 posts Elsif: 12 posts Schubert Zhang: 12 posts Xine Jar: 12 posts Keith Thomas: 11 posts Bradford Stephens: 10 posts Charles du: 9 posts Y_823910: 7 posts David Perona: 7 posts Jeyendran Balakrishnan: 7 posts Sylvain Hellegouarch: 7 posts Amandeep Khurana: 6 posts Lucas Nazário dos Santos: 6 posts Adrian Olariu: 5 posts Angus He: 5 posts
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