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Questions tagged [hbase]

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.

HBase is an open-source, distributed, versioned, column-oriented store modeled after Google' Bigtable: A Distributed Storage System for Structured by Chang et al. Just as Bigtable leverages the distributed data storage provided by the Google File System, HBase provides Bigtable-like capabilities on top of Hadoop. HBase includes:

  • Convenient base classes for backing Hadoop MapReduce jobs with HBase tables including cascading, hive and pig source and sink modules
  • Query predicate push down via server side scan and get filters
  • Optimizations for real time queries
  • A Thrift gateway and a REST-ful Web service that supports XML, Protobuf, and binary data encoding options
  • Extensible jruby-based (JIRB) shell
  • Support for exporting metrics via the Hadoop metrics subsystem to files or Ganglia; or via JMX
29 questions
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HBase replication not working

I have two HDFS clusters with HBase on top of it, cluster_1 and cluster_2. On cluster_1 (All nodes) I have edited the hbase-site.xml adding this: hbase.replication true And then in cluster_1 I…
Navarro
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CDH Community Edition Upgrade from 5.7 to 5.13 without Cloudera Express or Cloudera Enterprise

I am having a cluster like below - 3 Hbase Master (1 Active & 2 standby) 4 Region Servers 4 Data Nodes 1 Primary & 1 Secondary Name Node 3 Journal Node 4 Nodemanager 3 Resource Manager (1 Active & 2 standby) Query 1 What should be the order of…
tuk
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HBase Kerberos SaslException: GSS initiate failed (Mechanism level: Failed to find any Kerberos tgt)

I am trying to set up Kerberos authentication for HBase using this http://hbase.apache.org/0.94/book/security.html documentation and have very little progress so far. HBase 1.1.1 from Apache without any Cloudera influences. Host machine is running…
user1455836
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opentsdb service hang under load

I `m trying to put data into openTSDB with RESTful api the openTSDB provided. But the opentsdb process always hang there after a few minutes. It can successfully put some data then becomes slower and slower. Finally it will throw some exceptions in…
user307757
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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 heavy (around 600 GETs per second) and I can see…
tilmik
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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 /usr/local/hadoop/bin/hadoop: line 390:…
Vladimir
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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?
Aleksandr Levchuk
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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 programs? I am using PHP as my scripting language
Vinesh EG
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Backup and Restore strategy in Hbase cluster

I have just started with Hbase cluster. I have a Hbase cluster with 2 master nodes and 4 slave nodes. I have one hbase table where huge data is populated everyday so the disk gets filled quickly. I would like to implement a backup and restore…
Juvenik
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NoNode for HBase master pseudodistributed mode

I am using Ubuntu 18.04, hadoop 3.1.3 and hbase 2.2.1 To me it seems like my hadoop and HBase are not configured correctly to interact. When I through the HBase shell try to create a table it yields me with following error ERROR: KeeperErrorCode =…
Jonas Grønbek
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How to know which script or executable is linked with a metric in ganglia?

I have just started to explore ganglia and my question is "How to know which script or executable is linked with a metric in ganglia?" The fact is that I don't know much about ganglia. I have good experience in zabbix and I want to link a graph in…
Rohit
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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 data into HBase it was throwing class not found…
sunny
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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/ I have checked HBase and 2 tables are created by…
Karthik
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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 hbase.master localhost:60000 The host and port that the HBase master runs…
Rahul Mehta
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