HBase is the Hadoop database. Use it when you need random, realtime read/write access to your Big Data. This project's goal is the hosting of very large tables -- billions of rows X millions of columns -- atop clusters of commodity hardware.

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1answer
2k views

Is it possible to Managing 20 TB data using MySQL?

I am working in a project and my job is to build a database system to manage about 60,000,000,000 data entries. The project background is I have to do real-time storage for large number of messages ...
4
votes
1answer
66 views

Does Cloudera Manager need ongoing Root Access?

When installing Cloudera Manager 4, it asks for the root password on a passwordless sudo user to install packages. Does this account need to be retained, or is it just for initial setup?
3
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6answers
632 views

How to achieve zero down time

For an application we want to achieve zero database and application down time using Active Active configuration. Our dB is Oracle Following are my questions: How can we achieve active active ...
3
votes
1answer
5k views

Can't connect to HDFS in pseudo-distributed mode

I followed the instructions here for installing hadoop in pseudo-distributed mode. However, I'm having trouble connecting to HDFS. When I execute this command : ./hadoop fs -ls / I get a ...
2
votes
1answer
194 views

Could not start ZK at requested port of 2181, while export HBASE_MANAGES_ZK=false

Problem The first aim was to run HBase standalone. Navigating to ip:60010/master-status is succesfull once HBase has been started. The second aim is to run a distinct ZooKeeper quorum. ZooKeeper has ...
2
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0answers
51 views

Disable The Under Replicated Blocks Alert in Cloudera Manager

I have a single server Hbase cluster that I am only using as the sink end of HBase replication. Therefore I don't want to replicate any blocks within this cluster (since the source has replicated ...
1
vote
1answer
311 views

What version of HDFS is compatible with HBase stable?

HBase stable is currently hbase-0.90.4, what version(s) of HDFS is it compatible with?
1
vote
1answer
176 views

scribe log analysis

I have decided to use scribe to log all the error and request details in my site for analysis. How can I use the scribe log data to analyze the data. Is there any tool for this or scribe server ...
1
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0answers
57 views

HBase issue with *some* regionservers connecting

I have an HBase cluster that is working, and I'm attempting to add some new servers to the cluster, but "SocketException: Invalid argument" and "FailedServerException: This server is in the failed ...
1
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0answers
23 views

Hbase block locality index is always 0

I have a Hbase (v 0.94.19 with Hadoop 1.2.1) setup with one master machine and two region servers. Each region server has 16 GB heap (6.4 GB cache, 4.0 GB memstore) and 1.6 TB (2 X 800 GB) SSD disk ...
1
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0answers
286 views

java.lang.NullPointerException When Doing A Read in HDFS

I have had a 10 node HBase cluster up and running for the past 4 months. The cluster was setup on VMs in a corporate environment which I do not control, but everything has been working great...until ...
1
vote
0answers
36 views

Hbase catalog tables custom location

I have a Hbase cluster running with 2 region servers, each hosting around 100 regions. I can see that the ROOT and META tables are automatically assigned to separate region servers. My system is read ...
1
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1answer
1k views

HBase: hbck can't fix region inconsistencies

We are using stock HBase 0.94.4 on Hadoop 1.0.4. One of HBase regions stuck in transition state and I got the following when I run /opt/hbase/bin/hbase hbck: ERROR: Region { meta => ...
1
vote
1answer
208 views

Java process failure (hadoop, hbase)

Anytime I am running hadoop/hbase process from a command prompt I get an error: /usr/local/hadoop/bin/hadoop: line 320: /usr/lib/jvm/jdk1.7.0/bin/java: cannot execute binary file ...
0
votes
0answers
7 views

Hbase Shell: query for scanning rows with specific multiple columns [migrated]

New to Hbase, don't have hive or impala configured. :-( wanted to scan rows of a table based on multiple column values let say having Table A with 4 columns aa, ab, ac, ad. I wanted all rows of the ...
0
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0answers
23 views

hadoop hbase environment variables

I tried to setup a 4 node Hadoop cluster using CDH4.7. The cluster is up and running fine and when I submit a word count MR job it completed successfully but when I am submitting an MR job to insert ...
0
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0answers
66 views

OpenTSDB Web interface showing nothing other than header and footer

NOTE: I moved the question from stackoverflow to serverfault as this question didn't attract attention. I have a temporary OpenTSDB and hbase hosted on a aws micro server. http://54.72.180.169:4242/ ...
0
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0answers
81 views

Cannot access data from hbase with amazone ec2

I have a single node Hadoop machine in which HBase is running in the Amazon EC2 instance. Due to some reason the server got restarted. So i need to start Hadoop and Hbase again. Then it's working ...
0
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0answers
56 views

Hbase table creation error

I'm new to Hbase. There there some errors in hbase table creation as follows: hbase(main):004:0> list 11/04/30 11:42:23 DEBUG client.HConnectionManager$TableServers: Cache hit for row <> ...
-2
votes
2answers
728 views

why http://server:60010 web page for the running HBase Master

I installed by : wget http://archive.cloudera.com/cdh/3/hbase-0.90.3-cdh3u1.tar.gz This is my hbase_site.xml <property> <name>hbase.master</name> ...