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Clean up "object has already been modified" warnings #700 #717
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EronWright
changed the title
Issue 700
Clean up "object has already been modified" warnings #700
Oct 15, 2024
EronWright
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impact/no-changelog-required
This issue doesn't require a CHANGELOG update
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Oct 15, 2024
Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## v2 #717 +/- ##
==========================================
- Coverage 53.00% 51.20% -1.80%
==========================================
Files 29 29
Lines 3081 3199 +118
==========================================
+ Hits 1633 1638 +5
- Misses 1267 1379 +112
- Partials 181 182 +1 ☔ View full report in Codecov by Sentry. |
blampe
approved these changes
Oct 16, 2024
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Proposed changes
This PR optimizes the watches to reduce the likelihood of a race between the cache and the reconciliation loop.
The general idea is to use predicates to filter on the 'edge' events that would allow the reconciler to make forward progress. For example, the workspace reconciler applies a StatefulSet, then waits for it to be ready. Only when the StatefulSet is indeed ready should reconciliation be queued. Before this PR, the watch on StatefulSet was triggering upon any revision change (way too eager).
Overall, a number of optimizations were implemented:
Also, some debug statements were introduced to reason about the revision changes over time, since the "conflicts" are detected based on revision. In particular, we emit a debug statement when reconciliation is triggered by a given watch, to understand 'why'.
Related issues (optional)
Closes #700
Supercedes #679
Example
Here's the result of applying operator/examples/random-yaml/stack.yaml.
Before
After