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(Updated Dec. 14, 2017, 2:33 p.m.) Review request for mesos and Benjamin Mahler. Changes ------- Updated testing description. Repository: mesos Description ------- The new option allows to disable local message passing when messages are sent between UPIDs in the same OS process. Enabled by default. Diffs ----- 3rdparty/libprocess/src/process.cpp 75cf1d3b6d3d257ba9bc81c68017a74a6511cebf Diff: https://reviews.apache.org/r/64626/diff/1/ Testing (updated) ------- Ran `make check` and `make check LIBPROCESS_LOCAL_MESSAGE_PASSING=0` in libprocess. Ran `make check` in Mesos. Disabled local message passing breaks Mesos tests that use the replicated log, because it seemingly relies on "immediate" local message delivery (see [CoordinatorProcess::checkLearnPhase()](https://github.com/apache/mesos/blob/784b7f599f8ad8350fc7d6703a4b584301b23edc/src/log/coordinator.cpp#L396)). Manually verified that messages are going through the network with `tcpdump`. Thanks, Ilya Pronin
