DevinLeamy opened a new pull request, #468:
URL: https://github.com/apache/mesos/pull/468
Current implementation of MountInfoTable sorting crashes when some parts of
the mount tree are not visible in /proc/{pid}/mountinfo, which can happen, for
example, in a chrooted environment. The sorter assumes that the / mount is
always present and uses it as the starting node for the DFS traversal.
Additionally, this sorting algorithm loses mounts that are parents of
themselves from the sorted MountInfoTable. The bug is not caught by
FsTest.MountInfoTableReadSortedParentOfSelf test, so it needs to be updated as
well.
The new sorting implementation supports multiple starting nodes and works in
situations where the visible mount tree is disconnected. It also changes the
resulting order to BFS, but that shouldn't matter because the invariant is that
all parent entries appear before their child entries.
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