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

Instead of percentage I use absolute values and rise values for better space use (in pre-prod):

PUT _cluster/settings
{
  "persistent": {
    "cluster.routing.allocation.disk.threshold_enabled": true,
    "cluster.routing.allocation.disk.watermark.low": "1g",
    "cluster.routing.allocation.disk.watermark.high": "500m",
    "cluster.info.update.interval": "5m" 
  }
}

Also I reduce pooling interval to make ES logs shorter ))