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Review request for mesos, Benjamin Mahler and Kapil Arya.
Bugs: MESOS-6976
https://issues.apache.org/jira/browse/MESOS-6976
Repository: mesos
Description
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Officially, Mesos 1.0.0 (and newer) masters do not support pre-1.0.0
Mesos agents. However, we previously allowed old agents to register,
which resulted in several master crashes. As a short-term solution, we
fixed those crashes by adding backward compatibility mechanisms into the
master, but that backward compatibility code has made the master logic
more complicated and difficult to understand.
This commit changes the master to ignore registration attempts by Mesos
agents that precede Mesos 1.0.0. Now that this safety check is in place,
master logic can safely assume that all agents are running at least
Mesos 1.0.0, which will allow several simplifications to be made.
Diffs
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src/master/master.cpp d1cdc35a066e190ef8e0bd788e07e63b92f7fce7
src/tests/master_tests.cpp d1828eb42e0aedc9330c3786bbd9bb63aa42a64e
Diff: https://reviews.apache.org/r/58709/diff/1/
Testing
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`make check`
Thanks,
Neil Conway
