ElasticSearch Old-Gen Heap filling up quickly

Hi,
From our grafana logs, we see that our old-gen heap is filling up quickly (in 10 minutes).
We are using ES 6.7 with with 11 nodes and 28 shards. We have seen multiple outages when the old-gen heap is filling quickly. What does it mean? Is our heap too big/ number of shards too low/number of nodes too low/load too high? What does it indicate?
-Musfiqur

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.