gfphoenix78 opened a new pull request, #1796:
URL: https://github.com/apache/cloudberry/pull/1796
GP_PARALLEL_RETRIEVE_CURSOR_CHECK_TIMEOUT was armed by every DECLARE
PARALLEL RETRIEVE CURSOR but had no path to ever be disabled: the handler
re-armed it unconditionally in the !DoingCommandRead branch, and no portal-drop
path ever called disable_timeout(). The result was a SIGALRM firing every 10
seconds for the rest of the backend's life even when no parallel retrieve
cursors remained, which interfered with unrelated code paths (e.g. truncating
pg_usleep-based fault sleeps that tests rely on).
Tighten this in two ways:
- The handler now only re-arms when GetNumOfParallelRetrieveCursors() is
still positive, so the timer naturally quiets after the last cursor is gone.
- PortalCleanup() proactively calls disable_timeout() when the last
parallel retrieve cursor in this backend is being torn down, avoiding even the
single stray firing that the handler fallback would otherwise still produce.
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Fixes #ISSUE_Number
### What does this PR do?
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### Type of Change
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- [ ] New feature (non-breaking change)
- [ ] Breaking change (fix or feature with breaking changes)
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### Test Plan
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- [ ] Passed `make installcheck`
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### Checklist
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