Description
If zoo.cfg contains server.* ("server.0=server0:2888:3888\n") and cluster.distributed property (in hbase-site.xml) is empty we get an NPE in parseZooCfg().
The easy way to reproduce the bug is running org.apache.hbase.zookeeper.TestHQuorumPeer with hbase-site.xml containing:
<property> <name>hbase.cluster.distributed</name> <value></value> </property>