Grokbase Groups HBase user March 2014

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123 discussions - 551 posts

  • Hi All, I have come across an issue while using filters to get a result. For eg. I have created a table and its specifications are as follows : table name -- test column family -- cf row keys -- ...
    Mar 19, 2014 at 11:20 am
    Mar 25, 2014 at 12:46 pm
  • Hi, I am configuring hbase ( 0.94.17 and hadoop 1.2.1 ) in pseudo distributed mode and i am getting below exceptions when starting hbase for first time. Master logs :- 1) WARN ...
    Vimal JainVimal Jain
    Mar 20, 2014 at 11:19 am
    Mar 25, 2014 at 5:50 am
  • The 4th HBase 0.98.1 release candidate (RC3) is available for download at and Maven artifacts are also available in the temporary repository ...
    Andrew PurtellAndrew Purtell
    Mar 30, 2014 at 7:50 am
    Apr 4, 2014 at 8:23 am
  • I have two string as primary key(k1,k2) and my row key in hbase is MD5(k1)MD5(k1) I want to get all the rows equals k1.I can set startRowKey easily. But How can I calculate stopRowKey? is following ...
    Li LiLi Li
    Mar 25, 2014 at 3:36 am
    Mar 25, 2014 at 5:37 am
  • Hi, I am using Hbase 0.94.1 with Hadoop 1.2.1 and using Thrift API to access tables stored in Hbase from my C# application. I am able to connect to Server but while going to perform any operation ...
    Umesh ChaudharyUmesh Chaudhary
    Mar 11, 2014 at 11:26 am
    Mar 13, 2014 at 4:13 pm
  • Hi, I'm kinda new to HBase API, so pardon me if the question seems very basic. I wanted to know if I can fetch the region info of a particular table on a particular region server. Basically I want to ...
    Mar 6, 2014 at 8:31 am
    Mar 12, 2014 at 8:23 pm
  • Hi All, If i create a maven project with the following maven dependency then the HBase jar doesn't have org.apache.hadoop.hbase.ipc.SecureRpcEngine class. <dependency <groupId ...
    Anil guptaAnil gupta
    Mar 4, 2014 at 6:32 pm
    Mar 6, 2014 at 1:39 am
  • I am working in news processing industry, current system processes more then million article per week. And provides this data in real time to users, additionally it provides search capabilities via ...
    Jigar ShahJigar Shah
    Mar 3, 2014 at 7:31 am
    Mar 5, 2014 at 7:21 am
  • Hi, We are running a HBase cluster in these settings and with kerberos enabled. HBase: Zookeeper: 3.4.5 Hadoop: 1.1.1 We constantly put data into HBase and every several hours we get the ...
    Wei TanWei Tan
    Mar 10, 2014 at 9:27 pm
    Mar 14, 2014 at 10:31 pm
  • Hi, I created a table using create 'testtable',{NAME = 'cf1', SPLITS = ['row10','row20']}. It created the table, but when i do describe 'testtable' it returns me only: DESCRIPTION ENABLED 'testtable' ...
    Chandra KantChandra Kant
    Mar 19, 2014 at 7:29 pm
    Mar 20, 2014 at 5:43 pm
  • Hi, I need a new snapshot policy which sits in between the disabled and flushed version. So, basically: I cannot disable the table, but I also don't need the snapshot to be that "consistent" where ...
    Tianying ChangTianying Chang
    Mar 25, 2014 at 9:09 pm
    Apr 3, 2014 at 4:27 pm
  • Hi, I have Blockcache enabled on my table. So, I read a row and it's stored in Blockcache . Next, I do a write on that row and I read it again . My question is - does writing that row invalidates the ...
    Chandra kantChandra kant
    Mar 30, 2014 at 6:15 am
    Mar 31, 2014 at 2:01 am
  • Is it possible to use webhdfs to export a snapshot to another cluster? If so, what would the command look like? TIA Brian
    Brian JeltemaBrian Jeltema
    Mar 21, 2014 at 12:10 pm
    Mar 21, 2014 at 5:31 pm
  • How much time HBase will take if one Region Server down and try to read Region that belong to this down Region Server. Means Is there service down for those all region that belongs to dead RS? How ...
    Upendra YadavUpendra Yadav
    Mar 18, 2014 at 5:55 pm
    Mar 21, 2014 at 6:41 am
  • Hi, I am using hadoop-2.2.0 , HBASE- and hive-0.11.0 version for a project. I got a requirement such that i have to integrate hbase to hive , so that table reflection should happens ...
    Sai Pavan GaddeSai Pavan Gadde
    Mar 13, 2014 at 4:45 am
    Mar 14, 2014 at 2:32 am
  • Hi All, I am using HBase for storing the data, which is around 100 GBs in an HBase Table, which I am trying to query. Also, there are around 100 Regions, for the table, each region having 1 GB of ...
    Mar 8, 2014 at 4:38 pm
    Mar 10, 2014 at 5:33 am
  • Hi, We are seeing that our cluster has become imbalanced and we've noticed that there are some servers with disk utilization of ~90% and the others are at ~40%. We would like to run the DFS balancer ...
    Divye shethDivye sheth
    Mar 4, 2014 at 1:10 pm
    Mar 5, 2014 at 5:58 am
  • Hi all, I'm running with Hadoop 1.0.4 and HBase 0.94.12 bundled (OSGi) versions I built. Most issues I encountered are related to class loaders. One of the patterns I noticed in both projects is ...
    Amit SelaAmit Sela
    Mar 19, 2014 at 5:54 pm
    Mar 20, 2014 at 9:21 am
  • Hi, Is there an API that allows me to view active, completed, queued, and failed HBase queries beyond setting slow-query log to a low number and parsing the log files? Thanks, Gunnar The person that ...
    Tapper, GunnarTapper, Gunnar
    Mar 7, 2014 at 4:11 pm
    Mar 18, 2014 at 10:00 pm
  • I have backend hbase database and need to test whether they are working or not. I am using HBaseAdmin.checkHBaseAvailable(config); method to test if hbase is running. Here is the code snippet try { ...
    Mar 14, 2014 at 3:12 pm
    Mar 17, 2014 at 12:19 pm
  • hi all, when I run ./bin/hbase shell. it's ok. but when I execute 'list', it hangs. I have tested it with telnet zookeeper 2181 and it's ok. but I use netstat -lnp can't find any outgoing tcp ...
    Li LiLi Li
    Mar 5, 2014 at 5:24 am
    Mar 5, 2014 at 9:43 am
  • Hi, If I have a workload where the access pattern is writing to and reading from the same row, does it make sense to turn the blockcache off? In other words, reads and writes to a given row always go ...
    Rendon, Carlos (KBB)Rendon, Carlos (KBB)
    Mar 28, 2014 at 9:57 pm
    Apr 1, 2014 at 3:13 am
  • Hello, We run M/Rs over several HBase tables at the same time and chose to reduce region sizes in order to make map tasks faster and improve map-slot turnaround between the concurrent jobs. However, ...
    David KochDavid Koch
    Mar 23, 2014 at 1:58 am
    Mar 26, 2014 at 5:03 pm
  • Hi, I have a setup where data is fed into hbase using flume. When performing inserts in blocks of 1 million, I have noticed that there is constantly less than 1 million being inserted into the ...
    Ian BrooksIan Brooks
    Mar 26, 2014 at 1:52 pm
    Mar 26, 2014 at 4:54 pm
  • This caught my attention on the LinkedIn HBase group: "Coprocessors are not well thought out or implemented in HBase. " I'm not a coprocessors user. Never used them nor looked at them. So I can not ...
    Jean-Marc SpaggiariJean-Marc Spaggiari
    Mar 15, 2014 at 9:41 pm
    Mar 16, 2014 at 1:52 am
  • Hi All, Below is the error details that i am getting when creating tables in Hbase. All the services are running fine. hbase(main):001:0 create 't1', 'cf1' *ERROR: java.lang.NoClassDefFoundError ...
    Mar 13, 2014 at 3:10 pm
    Mar 14, 2014 at 1:46 pm
  • I'm still somewhat new to HBase and I'm trying to understand possibilities for region server failover. If I have a region server that goes down, it looks like I won't have any access to that region's ...
    Jeff StoreyJeff Storey
    Mar 13, 2014 at 8:49 pm
    Mar 14, 2014 at 3:57 am
  • Hi all, I'm using HBase 0.94.12 + Hadoop 1.0.4. Trying to use FuzzyRowFilter looks like it's missing keys in the scan. Row key structure: yyyyMMdd_Country_Product_Category1_Category2_ Where the date ...
    Amit SelaAmit Sela
    Mar 10, 2014 at 10:09 am
    Mar 13, 2014 at 4:23 pm
  • Hi, I am running 2 node hbase cluster atop HDFS. I was simulating a heavy write process on Hbase for performance analysis. I found that my HstoreFile has not reached "hbase.hregion.max.filesize" ...
    Vimal JainVimal Jain
    Mar 6, 2014 at 12:56 pm
    Mar 6, 2014 at 1:23 pm
  • Hi what is the default size of each Column family memstore....
    Upendra YadavUpendra Yadav
    Mar 3, 2014 at 11:20 am
    Mar 3, 2014 at 6:37 pm
  • Hi all, Any hint on the way to build and run 0.98? svn co hbase-0.98 mvn clean install assembly:assembly -DskipTests -Prelease All passed. Update ...
    Jean-Marc SpaggiariJean-Marc Spaggiari
    Mar 2, 2014 at 2:26 am
    Mar 2, 2014 at 1:25 pm
  • Hi all, I am not able to find the maven dependency for Apache HBase 0.96.0. I tried the following dependency but is not getting the dependency from here: <dependency <groupId ...
    Rakesh rakshitRakesh rakshit
    Mar 26, 2014 at 10:23 am
    Apr 1, 2014 at 2:22 am
  • Hi Folks We are a small internet company, we have been using HBase for several projects in the last two years, i noticed HBaseCon2014 is going to be held in May, so i want to know is it worth to be ...
    R WR W
    Mar 29, 2014 at 11:28 am
    Mar 29, 2014 at 9:19 pm
  • my rowkey is <strField,intField I want to scan it by decreasing order of the int field, how to make it reversed? if the row key is Bytes.toBytes(intField) + Bytes.toBytes(strField), then the order is ...
    Li LiLi Li
    Mar 27, 2014 at 8:25 am
    Mar 27, 2014 at 5:00 pm
  • Hi Folks: We've a table that we're unable to make online. A scan on this table yields the following stack trace. hbck doesn't report any inconsistencies. I went ahead and did a repair, which didn't ...
    Sudarshan Kadambi (BLOOMBERG/ 731 LEXIN)Sudarshan Kadambi (BLOOMBERG/ 731 LEXIN)
    Mar 18, 2014 at 2:14 pm
    Mar 18, 2014 at 5:34 pm
  • Hi, I heard that Hbase provides eventual consistency. What does that mean ? Where can i get more information on different consistency model and how hbase achieves eventual consistency ? -- Thanks and ...
    Vimal JainVimal Jain
    Mar 14, 2014 at 6:51 am
    Mar 17, 2014 at 7:42 pm
  • Hi all, I'm new to hbase in search of jpa kind of package for hbase to push the data into hbase system. Started trying with stargate where i found very strict json notation, base 64 encoding and ...
    Jeevi teshJeevi tesh
    Mar 7, 2014 at 4:14 am
    Mar 11, 2014 at 6:50 am
  • Hi i am using HBase 0.94.6-cdh4.5.0 i conected to hbase by setting config explicitly in my code through config.set zookeeper quorum property. i am able to read the hbase table data properly,it is ...
    Yeshwanth kumarYeshwanth kumar
    Mar 6, 2014 at 11:06 am
    Mar 9, 2014 at 2:50 pm
  • Hi, I first decommissioned a region server by using below command on master *./ ip-10-14-24-19* and then added back same server to the cluster by running below command ( on that ...
    Vimal JainVimal Jain
    Mar 4, 2014 at 6:27 am
    Mar 6, 2014 at 6:53 am
  • Hi List, I'm new to HBase, and I found it's necessary to replace the hadoop bundle in HBase with the real hadoop libs running the cluster when I read the HBase reference guide. I found all the hadoop ...
    Chengwei YangChengwei Yang
    Mar 4, 2014 at 3:08 am
    Mar 4, 2014 at 5:24 am
  • In evaluating strategies for minimizing downtime when a region server fails, in addition to the common approaches such as lowering the zookeeper timeout, is it possible to use replication to improve ...
    Jeff StoreyJeff Storey
    Mar 30, 2014 at 9:31 pm
    Apr 7, 2014 at 11:06 am
  • Without mapping /mounting the hbase table , how can I access and query hbase table ?
    Manju MManju M
    Mar 31, 2014 at 7:14 pm
    Apr 2, 2014 at 2:04 pm
  • Hi, We are trying to bulk load into HBase. But, it it failing. We are using a very standard process: 1. Create HFiles using an MR job. 2. Call "completebulkload" to move HFiles into regions. The ...
    Mahesh GargMahesh Garg
    Mar 25, 2014 at 9:52 pm
    Mar 25, 2014 at 11:48 pm
  • Hi, Sorry it took me so long to respond to this; I got very busy with shipping HPDSM. :) Trafodion has been tested with 0.94.6; 0.94.22 testing is in progress. You can't download the Trafodion source ...
    Tapper, GunnarTapper, Gunnar
    Mar 18, 2014 at 11:15 pm
    Mar 24, 2014 at 9:48 pm
  • Hello, Our HBase cluster had an unexpected shut-down and while trying to bring it back up we the Master gets stuck with the following message: Failed splitting of [ list of <host_name ,<port ,<tmst ] ...
    David KochDavid Koch
    Mar 6, 2014 at 7:14 pm
    Mar 10, 2014 at 3:31 am
  • Hmaster getting aborted after starting ./ in hbase-0.96.0 with hadoop 2.2.0. Tried with hbase-0.94.16 and hbase-0.98 but same result. Hmaster aborts as soon as it starts. Even tried ...
    Richard ChenRichard Chen
    Mar 5, 2014 at 2:47 am
    Mar 6, 2014 at 1:43 am
  • hi,maillist: this morning i check my hbase cluster log,and find all region server down ,i do not know why,hope some expert can show me some clue, here is the log which i find in the first death ...
    Ch huangCh huang
    Mar 4, 2014 at 1:23 am
    Mar 5, 2014 at 1:29 am
  • Why we need ZooKeeper for HBase. Please give me one example to understand: Like for what it maintaining Quorum. What happen if we have no zookeeper on distributed HBase. Is that quorum only for ROOT ...
    Upendra YadavUpendra Yadav
    Mar 3, 2014 at 2:29 pm
    Mar 3, 2014 at 6:44 pm
  • Hi, Apologies if this isn't an appropriate topic for this mailing list or if the topic has already been covered - I could not find any info in the archives for the last 6 months or so. I am trying to ...
    Tapper, GunnarTapper, Gunnar
    Mar 27, 2014 at 11:13 pm
    Apr 4, 2014 at 1:34 pm
  • Hi, Naive question: What would be required to get HBase to run on the Google Cloud Storage filesystem (GFS) ? Is it even possible, given the properties of GFS? There is a Hadoop ...
    David KochDavid Koch
    Mar 26, 2014 at 5:10 pm
    Mar 27, 2014 at 4:25 pm
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117 users for March 2014

Ted Yu: 82 posts Vimal Jain: 32 posts Jean-Marc Spaggiari: 26 posts Michael Stack: 20 posts Haosdent: 19 posts Lars hofhansl: 19 posts Andrew Purtell: 15 posts Li Li: 13 posts Bharath Vissapragada: 12 posts Upendra Yadav: 12 posts Amit Sela: 11 posts Divye sheth: 10 posts Tapper, Gunnar: 10 posts Chaitanya: 8 posts Umesh Chaudhary: 8 posts David Koch: 7 posts Demai Ni: 7 posts Drunkenfist: 7 posts Jigar Shah: 7 posts Libo Yu: 7 posts
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