High disk watermark exceeded even when there is not much data in my index

Question

I\'m using elasticsearch on my local machine. The data directory is only 37MB in size but when I check logs, I can see:

[2015-05-17 21:31:12,905][WARN

Answer 1

Clear up some space on your hard drive. That should fix the issue. This shall also change the health of your ES clusters to Green from Yellow (if you got the above issue, you are most likely to face the yellow cluster health issue as well).