Compression Codecs list



I am looking for the list of compression codec class names that can be used in the exam CCA175. In Horton works (itversity labs), they are under hadoop/conf/core-site.xml file. But I cant see this info in cloudera VM.

for ex:
This is specified in both Sqoop and while saving files using spark RDDs.

It would be good if we know where we could refer this info in the exam.