Fix a race condition that may make OperatorMaterialize emit too many terminal notifications#5850

Merged

akarnokd merged 3 commits intoReactiveX:1.xfrom

pkolaczk:materialize-busy-fix

Feb 15, 2018

Commits on Feb 15, 2018

Fix a race condition that may make OperatorMaterialize emit the
Piotr Kołaczkowski
committed
Add unit test for race in OperatorMaterialize
Piotr Kołaczkowski
committed
Set sudo required in travis config
Piotr Kołaczkowski
committed