Chi-Hsuan Huang created HDDS-15474:
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Summary: Further speed up TestOmSnapshot by reducing config-matrix
redundancy
Key: HDDS-15474
URL: https://issues.apache.org/jira/browse/HDDS-15474
Project: Apache Ozone
Issue Type: Sub-task
Components: test
Reporter: Chi-Hsuan Huang
Follow\-up to HDDS\-10308, which pinned four heavyweight config\-independent
tests in {{TestOmSnapshot}} to run once instead of across the full 8\-subclass
matrix.
{{TestOmSnapshot}} still runs most of its \~70 tests in all 8 subclasses \(each
starting its own MiniOzoneCluster for a different {{\(bucketLayout,
disableNativeDiff, createLinkedBucket, ...\)}} combination\). A large share of
those tests are config\-independent and could also run once, but this needs
more care:* About a dozen tests genuinely exercise layout\-specific code \(e.g.
{{SnapshotDiffManager}} branches on {{isFileSystemOptimized\(\)}}\), so they
must keep running across layouts.
* The validation / error\-path tests and other OM\-internal tests do not, and
are candidates to pin to a single config.
* Two constructor params are never varied across the 8 subclasses
\({{enableFileSystemPaths}} and {{forceFullSnapshotDiff}} are {{false}}
everywhere\), and {{createLinkedBucket}} showed \~0 runtime variance in
measurement, so some matrix dimensions may be redundant.
Proposed: classify each test as config\-sensitive vs config\-independent
\(using the existing {{assumeTrue}} guards plus measured per\-config
timing/coverage\), then run the config\-independent set once and/or prune
redundant matrix dimensions. Needs committer input on which layout / native /
linked combinations are worth keeping.
Relates to HDDS\-10308.
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