Integrate Pig and MapR-DB

About this task

To configure Pig to work with MapR-DB tables, perform the following steps:

On the client node where Pig is installed, add the following string to /opt/mapr/conf/env.sh:
```
export PIG_CLASSPATH=$PIG_CLASSPATH:/location-to-hbase-jar
```
If the client node where Pig is installed also has either the mapr-hbase-regionserver or mapr-hbase-master packages installed, add the location of the hbase-<version>.jar file to the PIG_CLASSPATH variable from the previous step:
```
export PIG_CLASSPATH="$PIG_CLASSPATH:/opt/mapr/hbase/hbase-<version>/hbase-<version>.jar"
```
If the client node where Pig is installed does not have any HBase packages installed, copy the HBase JAR from a node that does have HBase installed to a location on the Pig client node. Add the HBase JAR's location to the definition from previous steps:
```
export PIG_CLASSPATH=$PIG_CLASSPATH:/opt/mapr/lib/hbase-<version>.jar
```

Add the HBase JAR to the Hadoop classpath:

export HADOOP_CLASSPATH="/opt/mapr/hbase/hbase-<version>/hbase-<version>-mapr.jar:$HADOOP_CLASSPATH"

Launch a Pig job and verify that Pig can access HBase tables by using the HBase table name directly. Do not use the hbase:// prefix.