I am trying to compile and run the Facebook-20 codes for Hadoop. They have used a lot of LOG commands in their code. After Running, I notice that only some of the LOG commands are running (as they print the text Associated with them) whereas the others do not. I was wondering if anyone can provide some suggestion as to what exactly does the LOG command do and how to check its functioning library or code block ?
Also, I've modified the code slightly to suit my purpose and am unable to determine if its working or not. I've used LOG there to try and verify this functioning. Now my query is, whether it is possible to check if the LOG command is running or not, and if yes, how ?