Tags » Bigdata

How to disable Kerberos in Ambari?

When you fall in the case where your KDC is down and you can’t reach it anymore, it will impossible for you to disable the Kerberos Security through Ambari GUI. 147 more words


Ambari - Remove a Host

I hope this will get easier with Ambari next time. The easiest way to remove a host server1.domain.net from an Ambari Cluster (ambari.domain.net) right now is: 405 more words


Ambari uninstall scripts

If you want to remove an Ambari-through install of HDP components, you will have to it manually.

Actually, Ambari gives you a way to uninstall services and remove hosts. 63 more words


Setup HBase Indexer (Part 2)

1 – Why would someone use Solr to search on a wide-column database (HBase)?

The power of HBase search (scans) is not filters. All is about the rowkey design. 559 more words


Setup HBase Indexer (Part 1)


The scope of this post does not cover Hadoop/Hbase setup. I asume that you have a running Hbase environment with a Master (HMaster) and two region servers (rs1 and rs2). 712 more words


HBase, Zookeeper and Solr

If Solr and HBase are not on the same machine (distributed architecture), you will probably face this ZK problem:

 org.apache.zookeeper.ClientCnxn - Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect
java.net.ConnectException: Connection refused
 at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
 at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
 at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:361)
 at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)

java.io.IOException: Failed to connect with Zookeeper within timeout 30000, 
connection string: … 160 more words