I am tring to schedule a script in which a folder will be uploaded to hdfs and then it will be downloaded to machine on which oozie schedules the job. From there that script will run eg: sh thatdownloadedscript.sh in that script i have connected to hbase shell and just listed tables but it gives me following error: HBase Shell; enter 'help<RETURN>' for list of supported commands. Type "exit<RETURN>" to leave the HBase Shell Version 1.1.2.2.5.0.0-1245, r53538b8ab6749cbb6fdc0fe448b89aa82495fb3f, Fri Aug 26 01:32:27 UTC 2016 count 'DRM_Email1' ERROR: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt) Here is some help for this command: Count the number of rows in a table. Return value is the number of rows. This operation may take a LONG time (Run '$HADOOP_HOME/bin/hadoop jar hbase.jar rowcount' to run a counting mapreduce job). Current count is shown every 1000 rows by default. Count interval may be optionally specified. Scan caching is enabled on count scans by default. Default cache size is 10 rows. If your rows are small in size, you may want to increase this parameter. Examples: ... View more