While issue 28844 says it fixed the Chanel memory leak problem in 1.609.3, I am still seeing leak from it. I collected heap dump and hopefully it can help fix the problem. The file is too large, so I uploaded to my google drive https://drive.google.com/file/d/0B329y3R5-PB-UzhEX2dDa2hPMHM/view?usp=sharing