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create table ddl executed too slow when using tidb as the downstream sink #11521
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affects-6.5
affects-7.1
affects-7.5
affects-8.1
affects-8.3
area/ticdc
Issues or PRs related to TiCDC.
severity/moderate
type/bug
The issue is confirmed as a bug.
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3AceShowHand
added
type/bug
The issue is confirmed as a bug.
area/ticdc
Issues or PRs related to TiCDC.
labels
Aug 23, 2024
This is introduced by #11476 |
We are improving the implementation of I_S tables, you can open a feature request to our team if there's no workaround. |
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Labels
affects-6.5
affects-7.1
affects-7.5
affects-8.1
affects-8.3
area/ticdc
Issues or PRs related to TiCDC.
severity/moderate
type/bug
The issue is confirmed as a bug.
What did you do?
run
create table
ddl on the upstream TiDB.What did you expect to see?
TiCDC receive and execute ddl should be very quick
What did you see instead?
The second log is printed around 23 seconds later after the first one printed.
The root cause is that following query too slow, it may takes more than 20 seconds.
Versions of the cluster
Upstream TiDB cluster version (execute
SELECT tidb_version();
in a MySQL client):(paste TiDB cluster version here)
Upstream TiKV version (execute
tikv-server --version
):(paste TiKV version here)
TiCDC version (execute
cdc version
):(paste TiCDC version here)
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