Hi All, I just came across this error 'sparkDriver' failed after 16 retries!' while starting the spark shell. From the above screenshot, I came to know the error occurred due to the SparkUI port was not available. For this scenario I used Cloudera sandbox using Oracle VirtualBox. I just solved this issue by the following … Continue reading Error initializing SparkContext : ‘sparkDriver’ failed after 16 retries!
Hi Readers, I am happy to post another blog post on how to take HBase backup of a HBase data/ tables in hortonworks sandbox 2.5. Important: You may get the following error in hbase shell. ERROR: Can't get master address from ZooKeeper; znode data == null Just open ambari(Hortonworks Sandbox) / cloudera manager(Cloudera Sandbox) start the … Continue reading HBase, a hadoop NoSQL database – Backup Process Explained