[bug] something crashed

[whitewum]

match (s)-[:relation*1..3]-(e) where id(s) == 1 RETURN count (distinct id(e))

there are only 200 nodes, and they are fully directed connected pairwise. but this query takes too many memory.

You can reproduce this case very easy.

[1330702.883214] Out of memory: Kill process 9695 (nebula-graphd) score 926 or sacrifice child
[1330702.883350] Killed process 9695 (nebula-graphd) total-vm:22125060kB, anon-rss:15918864kB, file-rss:0kB, shmem-rss:0kB
[1330703.599318] oom_reaper: reaped process 9695 (nebula-graphd), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB

free -m
              total        used        free      shared  buff/cache   available
Mem:          16039         303       15517           0         218       15460
Swap:          4095         431        3664

[whitewum]

[whitewum]

is it reasonable for a 200 nodes network?

[whitewum]

besides, why memory is not released after query is over.

[CPWstatic]

Suppose to be OOM.