Hi @urbanlad20,   Your error is:  File does not exist: /user/spark/spark2ApplicationHistory/.5e9b4c52-032a-4469-b278-80aa6254cfdf      Can you restart the spark installation ? it seems to be related.   Regards, Manu. ... View more

Hi @Hail2Ichi,   Try to update Impala JDBC Connector.   Regards,  Manu. ... View more

Hi @rdbb, Its depends of your objetive.   There are not any restriction, but really you need a edge node?     Regards, Manu. ... View more

Hi @Adilm,    1) If you want to migrate all data, you can compress them and allocated in other nodes/servers. And not need 20TB of disk.      Althow if you need availble the data information, yo have 2 scenarios:           - Ten replication factor: then need 20TB per server.          - One replication factor: only need 20TB distributed in 10 servers.          - Best: replication factor 5 and 4TB per server.   2) Its depends, you need one namenode, one secondarynamenode, and for example 8 datanodes. You need to put attention of resources of your hosts.       Regards, Manu.       ... View more

Hi @IVenkatesh,   Can you paste any logs from some services?   All your services are stopped.   Regards, Manu. ... View more

Hi @MantuDeka,   Try to stop some unnecesary services that are running.     Regards, Manu. ... View more

Hi @Tulasi,   Try to kill running process on port used by Yarn Services and then Try to restart.   Regards, Manu. ... View more