FWIW, I just tried using 8.7.0 to run:
bin/solr -m 200m -e cloud -noprompt
And then setup the following bash one liner to poll the heap metrics...
while : ; do date; echo "node 8989" && (curl -sS
http://localhost:8983/solr/admin/metrics | grep memory.heap); echo "node 7574"
&& (curl -sS http://localhost:8983/solr/admin/metrics | grep memory.heap) ;
sleep 30; done
...what i saw was about what i expected ... heap usage slowly grew on both
nodes as bits of garbage were generated (as expected cosidering the
metrics requests, let alone typical backgroup threads) until eventually it
garbage collected back down to low usage w/o ever encountering an OOM or
crash...
....
Thu Jan 28 12:38:47 MST 2021
node 8989
"memory.heap.committed":209715200,
"memory.heap.init":209715200,
"memory.heap.max":209715200,
"memory.heap.usage":0.7613688659667969,
"memory.heap.used":159670624,
node 7574
"memory.heap.committed":209715200,
"memory.heap.init":209715200,
"memory.heap.max":209715200,
"memory.heap.usage":0.7713688659667969,
"memory.heap.used":161767776,
Thu Jan 28 12:39:17 MST 2021
node 8989
"memory.heap.committed":209715200,
"memory.heap.init":209715200,
"memory.heap.max":209715200,
"memory.heap.usage":0.7813688659667969,
"memory.heap.used":163864928,
node 7574
"memory.heap.committed":209715200,
"memory.heap.init":209715200,
"memory.heap.max":209715200,
"memory.heap.usage":0.7913688659667969,
"memory.heap.used":165962080,
Thu Jan 28 12:39:47 MST 2021
node 8989
"memory.heap.committed":209715200,
"memory.heap.init":209715200,
"memory.heap.max":209715200,
"memory.heap.usage":0.8063688659667969,
"memory.heap.used":169107808,
node 7574
"memory.heap.committed":209715200,
"memory.heap.init":209715200,
"memory.heap.max":209715200,
"memory.heap.usage":0.8113688659667969,
"memory.heap.used":170156384,
Thu Jan 28 12:40:17 MST 2021
node 8989
"memory.heap.committed":209715200,
"memory.heap.init":209715200,
"memory.heap.max":209715200,
"memory.heap.usage":0.3428504943847656,
"memory.heap.used":71900960,
node 7574
"memory.heap.committed":209715200,
"memory.heap.init":209715200,
"memory.heap.max":209715200,
"memory.heap.usage":0.3528504943847656,
"memory.heap.used":73998112,
-Hoss
http://www.lucidworks.com/
