fix: notifies all workers once a region is flushed #4016
Merged
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fixes #4012
What's changed and what's your intention?
This PR notifies all workers once a region is flushed to ensure all stalled write requests can proceed. All workers share the same
watch
channel and they use that channel to notify each other. The worker loop will select both the request receiver and thewatch
channel receiver.It also changes the
greptime_mito_write_stall_total
metric to a gauge vec for all workers.Checklist