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From Greg Mann <>
Subject Re: Review Request 70325: Updated the master to allocate recovered orphan operation resources.
Date Thu, 04 Apr 2019 17:13:56 GMT

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(Updated April 4, 2019, 5:13 p.m.)

Review request for mesos, Benjamin Mahler, Gastón Kleiman, Joseph Wu, and Meng Zhu.

Bugs: MESOS-9635

Repository: mesos


This patch updates the master's framework recovery code to use
the allocator's `addAgentResources()` method rather than
`updateSlave()` when recovering orphan operations, which has the
benefit of tracking the allocation of the operations' consumed
resources, avoiding situations in which those resources would be
incorrectly offered to frameworks while the operation is still
in a pending state.

Diffs (updated)

  src/master/master.cpp cf5caa0893ba1387a1f3a9d129ecd7d974f776bd 




`make check`

To verify the flaky test fix, the following command was executed both before and after the
patches were applied, while `stress -c <num_cores_on_machine>` was being run:
`bin/ --gtest_filter="*AgentPendingOperationAfterMasterFailover*" --gtest_repeat=-1

Before the patches were applied, the test would reliably fail after less than 50 repetitions.
After the patches are applied, the test can be run for hundreds of repetitions with no failures.


Greg Mann

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