Unable to instantiate org.apache.hadoop.hive.metastore.HiveMetaStoreClient

ERROR
hive>show databases;
FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask. java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.metastore.HiveMetaStoreClient

SOLUTION

chown -R hdfs:hadoop *

in case above solution doesn't work then try to remove *.lck files, using below command

[root@localhost sbin]# rm metastore_db/*.lck