Hi Team,   I got a solution.   When we are selecting an instance with instance store for configuring CDH, the log files will be automatically stored to the instance store. While we stops the instance the data / logs in the instance store will be deleted and that results to showing error " Missing Blocks".    For avoiding this we need to remove instance store while launching instance or we need to change the log location to EBS volume manually after completing installation. I think its better to remove the instance store while launching the instance. Thanks to all you..    Cheers!!!! ... View more