Archit Goyal created FLINK-40530:
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Summary: HistoryServerArchiveFetcher.updateJobOverview()
aggregates all archived job overviews without per-entry error isolation,
causing a single malformed archive to blank out the entire /jobs/overview
response
Key: FLINK-40530
URL: https://issues.apache.org/jira/browse/FLINK-40530
Project: Flink
Issue Type: Bug
Reporter: Archit Goyal
A single malformed/incompatible archive's overview JSON throws inside the
aggregation loop, which has no per-entry isolation, so the whole
/jobs/overview update aborts and returns empty/stale data for every job, not
just the bad one.
Fix: catch/skip per-entry failures and guard against wiping a good overview if
all entries fail.
Discovered during 1.x -> 2.x migration
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