How to install HBase
Editor to share with you how to install HBase, I hope you will get something after reading this article. Let's discuss it together.
1. Installation instructions
L Zookeeper3.4.5 cluster deployed (192.168.210.95\ 192.168.210.86 deployment manual see zookeeper installation manual)
L Hbase version number 0.96.1
L operating system Red HatEnterprise Linux Server release 5.5 (Tikanga)
two。 Installation steps
1) download HBase0.96.1,hbase-0.96.1-hadoop2-bin.tar.gz, official website address: hbase.apache.org
2) upload to server 210.95, directory: / home/sun
3) decompress: tar-xvf hbase-0.96.1-hadoop2-bin.tar.gz, decompress the MV directory: / home/sun/hbase
4) add configuration item: / etc/profile
Export HBASE_HOME=/home/sun/hbase
Export PATH=$PATH HBASE_HOME/bin
5) modify / home/sun/hbase/conf/hbase-env.sh
ExportJAVA_HOME=/usr/local/java/jdk1.7.0_45
Export HBASE_MANAGES_ZK=false (set to FALSE here to use your own configured zookeeper cluster)
6) modify / home/sun/hbase/conf/regionservers and add the corresponding regionserver
7) modify / home/sun/hbase/conf/hbase-site.xml
Hbase.master
Namenode:6000
Hbase.rootdir
Hdfs://namenode:9000/hbase
Hbase.cluster.distributed
True
Hbase.zookeeper.property.clientPort
2181
Hbase.zookeeper.quorum
Namenode,datanode002
8) replace the relevant HADOOPJAR package under / home/sun/hbase/lib with version 2.2
9) start zookeeper first, and then start hbase:cd/home/sun/hbase/bin,. / start-hbase.sh
10) check the startup log to make sure there are no errors, and check it on 95 and 86 by jps.
11) http://192.168.210.95:60010/master-statusHBASE MASTER Monitoring Page
12) http://192.168.210.86:60030/rs-statusHBASE REGIONSERVER Monitoring Page
PS: an error occurred while running HBASE, indicating the existence of multiple SELF4J versions of the JAR package, resulting in an error. Delete two JAR of SELF4J in the FLUME LIB package.
3. Test HBase
1) enter the HBase directory and start HBase: cd / home/sun/hbase/bin
2). / start-hbase.sh
3) start hbase shell: hbase shell
4) View status status
5) create a table: create 'warn','id','clientid','clientname'
6) View all tables: list
7) number of rows in the statistical table: count 'warn'
4. Question supplement
HRegionServer hangs up on Datanode001 and an exception is reported: org.apache.zookeeper.KeeperException$SessionExpiredException:KeeperErrorCode = Session expired. The error in the foreground is displayed as: ERROR: java.io.IOException: Table Namespace Manager not ready yet,try again later:
Add to / home/sun/hbase/conf/hbase-env.sh:
Export HBASE_OPTS= "$HBASE_OPTS-verbose:gc-XX:+HeapDumpOnOutOfMemoryError-XX:+UseConcMarkSweepGC-XX:+CMSParallelRemarkEnabled-XX:+UseParNewGC
-XX:CMSInitiatingOccupancyFraction=70 "
Add to / home/sun/hbase/conf/hbase-site.xml:
Zookeeper.session.timeout
90000
Hbase.regionserver.restart.on.zk.expire
True
After reading this article, I believe you have a certain understanding of "how to install HBase". If you want to know more about it, you are welcome to follow the industry information channel. Thank you for reading!
