fix memleak in couch_peruser, patch by @rnewson #3851
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rnewson
reviewed
Nov 26, 2021
rnewson
approved these changes
Nov 26, 2021
nickva
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Nov 26, 2021
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To prevent memory leaks, a better pattern might be to not unlink and respawn mem3_cluster processes, but to keep the existing (single) one around. We are already linked to it and we don't set the trap_exit flag. So if it crashes it should restart the couch_peruser gen_server as well.
| -spec init_state() -> #state{}. | ||
| init_state() -> | ||
| reset_state(#state{mem3_cluster_pid = Pid} = State) when is_pid(Pid) -> | ||
| unlink(Pid), |
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Here we just unlink the process, but the process would still be alive and we'd be accumulating them and each one would still be sending stable|unstable events. The memleak is not from the links themselves but from the number of processes spawned.
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