Error HBASE-ZOOKEEPER : Too many connections

Question

I am using Hbase-Hadoop combination for my application along with Data Nucleus as the ORM.

When I am trying to access hbase via several threads at a single time. It

Answer 1

Zookeeper servers have an active connections limit, which by default is 30. You need to increase this limit by setting maxClientCnxns property accordingly in your zookeeper config file, zoo.cfg.

For 100 connections:

maxClientCnxns=100

To tell zookeeper to impose no limit to the number of connections:

maxClientCnxns=0