Can anyone please suggest me where should I start?
Well I started it off with Apache Hadoop binary on Ubuntu
Then moved on to manual installation of Cloudera hadoop
finally landed in Cloudera manager .
to start with I would suggest you from apache hadoop manual deployment and then side by side Cloudera Quickstart to explore other cdh eco systesm like hive , impala , many more .
Do you recommend taking training courses with cloud era in order to eventually build an career in this area?
That totally depends on to be frank to bring up a cluster i mean single node cluster :)) it took me a good20 days because i am from Java J2ee development guy had to roll up my sleeves to vmare , Linux Os then hang on to hadoop. Cloudera community is pretty active so we have your back on any troubleshooting :)))
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