cockroachdb / cockroachdb/cockroach
changefeedccl: improve ux on large initial scans
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A-cdc
C-enhancement
O-24.3-scale-testing
O-testcluster
P-3
T-cdc
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Description
Currently on large data volumes / range counts, one feed's initial scan can take days and block other feeds from (re)starting. https://github.com/cockroachdb/cockroach/pull/133789 is aimed at mitigating the latter, but we should still improve this, by eg. printing a NOTICE if the range count is such that initial scans will take forever.
Jira issue: CRDB-44198
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