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SAY-5 30b7814aaf pkg/tools/batcher: stop scheduler panicking when b.data is closed externally ... scheduler()'s defer unconditionally calls close(b.data). If the channel was closed by the caller (or an upstream producer) instead of via the normal Close()-sends-nil path, the receive on b.data returns ok == false, scheduler returns, and the deferred close(b.data) then fires on an already-closed channel: panic: close of closed channel reliably reproducible under the #3653 steps (manually closing b.data while Start() is running). Track whether we observed the external-close via a local `externallyClosed` flag set in the `ok == false` branch. The defer only closes b.data when that flag is false, i.e. when the scheduler exited through the nil-message or ticker paths and still owns the channel. No behaviour change on the graceful Close() path. Fixes #3653		3 weeks ago
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batcher.go	pkg/tools/batcher: stop scheduler panicking when b.data is closed externally	3 weeks ago
batcher_test.go	refactor: db cache batch refactor and batch consume message. (#2325)	2 years ago