Hadoop, Big Data, Spark - and some eDiscovery
Wednesday, January 15, 2014
Hadoop cartoons - one day in the life of a Big Data developer
What is one to when his HBase application hangs, regardless of how he connects to the ZooKeeper? - Banging your head on the keyboard helps.
The possible reasons for this are
ZooKeeper/HBase configuration problems (check them out independently with 'hbase shell' and zkCli.sh)
HADOOP_CLASSPATH not configured correctly
Running tests from maven may also give you problem.
When your 'hadoop classpath' is a few pages long, and you run outside of maven, using this classpath, it will work.
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