Before creating the twitter table i added this
ADD JAR hdfs:///user/hive/warehouse/hive-serdes-1.0-SNAPSHOT.jar;

I got the following error when create the twitter table in hive:
Error while processing statement: FAILED: Execution Error, return 
code 1 from org.apache.hadoop.hive.ql.exec.DDLTask. Cannot validate serde:
com.cloudera.hive.serde.JSONSerDe