NiFi processor - GetTwitter with correct twitter credentials (Consumer Key, Consumer secret, Access token, Access token secret) is not working. Throws error : Received error HTTP_ERROR: HTTP/1.1 401 Authorization Required. Will attempt to reconnect. It used to work fine for me in different environments. I have checked with network team on port blocks earlier and resolved Failed to establish Connection error. I tried multiple times of regenerating keys and updating the processor but still same error. Please advice. ... View more

Hi. Considering a spark sql or data set with 400 columns and 1 million rows. Not all rows have all 400 columns populated and essentially they cant be as not null columns as well. Need to understand if null value consumes space in memory and if so how much does it take. Do we have any fact sheet or article of all data types size in bytes or bits. ... View more