Between HDFS encryption and compression

[#1]

If we turn on encryption, should we turn off compression? Are the data nodes smart enough to realize that there's no point trying to compress encrypted blocks?

[#2 · Accepted solution]

Compression and encryption are 2 different things: In Step 1 you compress a file, or not, it's optional but recommended unless you have reasons not to compress it. In Step 2 you encrypt the file from Step 1.