I'd just like to add I've reported the same issue happening on both of our clusters since upgrading from 8.15 to 8.17
More details are in the thread but quick summary:
- Two completely isolated clusters of completely different sizes are showing OOM's since upgrading.
- The search & indexing pattern is consistent as it has always been, and we've seen zero OOM's in the past year or so we've been running 8.x on these clusters, only since upgrading to 8.17 a couple of days ago have we seen 10+ OOM's across nodes
- The OOM's seem to happen across all our hot nodes over a couple of hour period (i.e. all hot nodes will OOM once within a given period).
- We did not change JVM version in the 8.16 -> 8.17 upgrade