argoyal2212 opened a new pull request, #29062:
URL: https://github.com/apache/flink/pull/29062
## What is the purpose of the change
`HistoryServerArchiveFetcher#updateJobOverview()` aggregates every archived
job's overview JSON into one combined `/jobs/overview` response. Today a single
malformed or version-incompatible archive throws during aggregation and aborts
the whole update, silently returning empty/stale overview data for **every**
job, not just the offending one. This PR adds per-entry isolation so one bad
archive can no longer take down the entire job listing.
## Brief change log
- `updateJobOverview()` now catches and skips a single archive's parse
failure instead of letting it abort the whole aggregation
- Logs a warning per skipped entry plus a summary count, instead of one
opaque top-level error
- Guards against overwriting a previously-good combined overview if every
entry fails on a given refresh cycle
## Verifying this change
This change added tests and can be verified as follows:
- Added
`testUpdateJobOverviewSkipsMalformedEntryInsteadOfFailingEverything`, which
injects one malformed per-job overview entry alongside a valid one and asserts
the valid job is still listed
- Added
`testUpdateJobOverviewDoesNotWipeGoodOverviewWhenAllEntriesAreMalformed`, which
corrupts the only entry and asserts the previously written combined overview is
preserved rather than replaced with an empty one
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): no
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: no
- The serializers: no
- The runtime per-record code paths (performance sensitive): no
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Kubernetes/Yarn, ZooKeeper: no
- The S3 file system connector: no
## Documentation
- Does this pull request introduce a new feature? no
- If yes, how is the feature documented? not applicable
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