Jie Yu created MESOS-2279:
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Summary: Future callbacks should be cleared once the future has
transitioned.
Key: MESOS-2279
URL: https://issues.apache.org/jira/browse/MESOS-2279
Project: Mesos
Issue Type: Bug
Affects Versions: 0.21.0, 0.21.1
Reporter: Jie Yu
For example, when a future has transitioned into READY state, all onDiscard
callbacks should be cleared to avoid potential cyclic dependency and memory
leak. For instance:
{noformat}
Promise<Nothing> promise;
Future<Nothing> f = promise.future();
f.onDiscard(lambda::bind(&SomeFunc, f));
promise.set(Nothing());
{noformat}
The above code has a cyclic dependency because f.data has a reference to the
future inside an std::function which has a reference to f.data.
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