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My in HDP cluster HBase is automaticlly down with Connection failed: [Errno 111] Connection refused to ssehdp101.metmom.mmih.biz:16000 this errot

My HBase getting down with following error

Connection failed: [Errno 111] Connection refused to ssehdp101.metmom.mmih.biz:16000

and My sqoop jobs also not running.

while I run sqoop job --list command I am getting following error

java.sql.SQLException: error in script file line: 904 org.hsqldb.HsqlException: Violation of unique constraint SQOOP_SESSIONS_UNQ: duplicate value(s) for column(s) JOB_NAME,PROPNAME,PROPCLASS

what is the proble..

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