cockroachdb / cockroachdb/cockroach
Changefeeds cause descriptor table to become a hotspot (especially with many nodes)
Open
A-cdc
C-bug
O-25.4-scale-testing
P-3
T-cdc
- Dominant language
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Description
**Describe the problem**
During scale testing we saw increased load on the descriptor table when running changefeeds.
Note: We actually already have a fix for this, which is turning on schema locked for the relevant tables. We observed this change fix the issue (see slack thread). Since schema locked is on by default in 26.1, we could consider this already fixed.
See this slack thread: https://cockroachlabs.slack.com/archives/C0A0KECF60Y/p1765482232801239?thread_ts=1765477615.699389&cid=C0A0KECF60Y
Jira issue: CRDB-57772
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