Add jhat example with larger memory limit.
Add jhat example with larger memory limit.

cptdeka10/tldr,slash3b/tldr,igorshubovych/tldr,WALL-E/tldr,felixonmars/tldr,deekim/tldr,WALL-E/tldr,felixonmars/tldr,Phizho/tldr,cptdeka10/tldr,kuanyui/tldr,UncommonPleb/tldr,zoisom/tldr,cptdeka10/tldr,felixonmars/tldr,zoisom/tldr,Phizho/tldr,Phizho/tldr,slash3b/tldr,zoisom/tldr,katekyan/tldr,slash3b/tldr,katekyan/tldr,deekim/tldr,UncommonPleb/tldr,igorshubovych/tldr,AgamAgarwal/tldr,deekim/tldr,katekyan/tldr,kuanyui/tldr,UncommonPleb/tldr,AgamAgarwal/tldr