ES heap issue - hot threads

hot_threads

::: {Lunatik}{Y0JLJZ79TJWte1v8UcDeuw}{172.31.31.81}{172.31.31.81:9300}
   Hot threads at 2017-01-04T08:52:28.643Z, interval=500ms, busiestThreads=3, ignoreIdleThreads=true:

::: {Ursa Major}{cFtE1408RBStaL2cnRE8eA}{172.31.19.204}{172.31.19.204:9300}
   Hot threads at 2017-01-04T08:52:28.627Z, interval=500ms, busiestThreads=3, ignoreIdleThreads=true:

::: {Maxam}{KXphMUJITqu2J33NAWSsHA}{172.31.37.191}{172.31.37.191:9300}
   Hot threads at 2017-01-04T08:52:28.626Z, interval=500ms, busiestThreads=3, ignoreIdleThreads=true:

::: {Gorilla Girl}{rAwO6sHyTta_0yFsCbHC3w}{172.31.19.202}{172.31.19.202:9300}
   Hot threads at 2017-01-04T08:52:28.628Z, interval=500ms, busiestThreads=3, ignoreIdleThreads=true:

::: {Krang}{QQ-o0k2CTCu7xQWYtkm2tQ}{172.31.20.150}{172.31.20.150:9300}
   Hot threads at 2017-01-04T08:52:28.611Z, interval=500ms, busiestThreads=3, ignoreIdleThreads=true:

::: {Doctor Demonicus}{XXqbgqR9Qg6EDCcg3rn8PQ}{172.31.37.193}{172.31.37.193:9300}
   Hot threads at 2017-01-04T08:52:28.628Z, interval=500ms, busiestThreads=3, ignoreIdleThreads=true:

::: {The Grip}{WM7hJAQnQFKMLpJ-R-uJsg}{172.31.20.152}{172.31.20.152:9300}
   Hot threads at 2017-01-04T08:52:28.608Z, interval=500ms, busiestThreads=3, ignoreIdleThreads=true:

::: {Crimson Craig}{KgI6k55-S8qAl6a8lOsRqw}{172.31.37.215}{172.31.37.215:9300}
   Hot threads at 2017-01-04T08:52:28.631Z, interval=500ms, busiestThreads=3, ignoreIdleThreads=true:

::: {Puma}{WthRVi6YQuiUcLrV2QMn8w}{172.31.37.216}{172.31.37.216:9300}
   Hot threads at 2017-01-04T08:52:28.627Z, interval=500ms, busiestThreads=3, ignoreIdleThreads=true:

::: {Sabra}{4WB3nJOoSmaRlDj-F_JGQg}{172.31.19.201}{172.31.19.201:9300}
   Hot threads at 2017-01-04T08:52:28.872Z, interval=500ms, busiestThreads=3, ignoreIdleThreads=true:

::: {Iron Maiden}{pVdaUS90SPOGbjzC3ZGC0A}{172.31.19.203}{172.31.19.203:9300}
   Hot threads at 2017-01-04T08:52:29.051Z, interval=500ms, busiestThreads=3, ignoreIdleThreads=true:

::: {Cyclops}{AufFJ11-TsG9A8QqIOdshg}{172.31.37.208}{172.31.37.208:9300}
   Hot threads at 2017-01-04T08:52:28.628Z, interval=500ms, busiestThreads=3, ignoreIdleThreads=true:

::: {Stardust}{m7U2WLq_RDm3Um4LLhQbhw}{172.31.20.149}{172.31.20.149:9300}
   Hot threads at 2017-01-04T08:52:28.607Z, interval=500ms, busiestThreads=3, ignoreIdleThreads=true:

::: {Warbird}{gyxqRmpORgOMk-dATc1VYA}{172.31.37.188}{172.31.37.188:9300}
   Hot threads at 2017-01-04T08:52:28.624Z, interval=500ms, busiestThreads=3, ignoreIdleThreads=true:

::: {Match}{J58eIkjtTmWwShjgKY3ZmQ}{172.31.19.200}{172.31.19.200:9300}
   Hot threads at 2017-01-04T08:52:28.623Z, interval=500ms, busiestThreads=3, ignoreIdleThreads=true:

::: {Cap 'N Hawk}{FPw-UZBBTPuwFPq7cNTSNg}{172.31.37.210}{172.31.37.210:9300}
   Hot threads at 2017-01-04T08:52:28.633Z, interval=500ms, busiestThreads=3, ignoreIdleThreads=true:

::: {Shiva}{imNbn-q_SQ6dsCZAP9XYUg}{172.31.37.190}{172.31.37.190:9300}
   Hot threads at 2017-01-04T08:52:28.627Z, interval=500ms, busiestThreads=3, ignoreIdleThreads=true:

::: {Spider-Woman}{JfHlDMhpS-iTMXgGP_YDNg}{172.31.37.211}{172.31.37.211:9300}
   Hot threads at 2017-01-04T08:52:28.624Z, interval=500ms, busiestThreads=3, ignoreIdleThreads=true:

::: {The Wink}{r5-Dx8odQLOcly_NYB31yQ}{172.31.20.153}{172.31.20.153:9300}
   Hot threads at 2017-01-04T08:52:28.625Z, interval=500ms, busiestThreads=3, ignoreIdleThreads=true:

::: {Tethlam}{Jt0A4uFERRuw35D-6plX-g}{172.31.20.151}{172.31.20.151:9300}
   Hot threads at 2017-01-04T08:52:28.624Z, interval=500ms, busiestThreads=3, ignoreIdleThreads=true: