I am using CDH4 in a pseudo-distributed mode and I have some trouble working with HBase and Pig together (but both work fine alone).
I am following step by step this
Your PIG_CLASSPATH is wrong, it should look like the following:
PIG_CLASSPATH
export PIG_CLASSPATH=”`hbase classpath`:$PIG_CLASSPATH”
This will add your missing hbase-related jars to your classpath for Pig.