[WAGED Tag Isolation 9/16] Measure the blast radius of a broken clique - #289
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Add tests that pin down how much of a cluster one unplaceable clique is allowed to affect. They assert the property the whole feature rests on: with isolation on, a broken clique leaves every other clique's assignment untouched, and the number of resources carried over equals the size of the broken clique's share block and nothing more. With isolation off, the same cluster fails entirely, which is the behavior being replaced. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
LZD-PratyushBhatt
added this pull request to stack #297
September 20, 2026 05:46
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waged-tag-level-isolation
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Description
Tests only. They pin down how much of a cluster one unplaceable clique is
allowed to affect: with isolation on, a broken clique leaves every other
clique's assignment untouched and the number of carried over resources
equals the size of its share block and nothing more. With isolation off the
same cluster fails entirely, which is the behavior being replaced.
Stacked PR 9 of 16 for WAGED instance tag isolation.
Base branch:
lzd/waged-iso-08-deficit. Only the top commit belongs to this PR.The whole stack merges into
waged-tag-based-isolation, which is merged intodevat the end.Tests
TestCliqueFailureBlastRadius (new).
Changes that Break Backward Compatibility
None. The new cluster config flag defaults to false, and with it off every
code path added here behaves exactly as it does today.
Documentation
The design doc lands in
lzd/waged-iso-13-docasdocs/design/002-waged-instance-tag-isolation.md.Code Quality
Formatted with helix-style.xml.