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TiCDC continues to set tidb_cdc_write_source session variable even if when downstream does not have this variable. #9180

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asddongmen opened this issue Jun 12, 2023 · 0 comments · Fixed by #9175
Closed

TiCDC continues to set tidb_cdc_write_source session variable even if when downstream does not have this variable. #9180

asddongmen opened this issue Jun 12, 2023 · 0 comments · Fixed by #9175
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@asddongmen
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affects-6.5 This bug affects the 6.5.x(LTS) versions. affects-7.1 This bug affects the 7.1.x(LTS) versions. area/ticdc Issues or PRs related to TiCDC. component/sink Sink component. severity/minor type/bug The issue is confirmed as a bug.

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@asddongmen
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What did you do?

Create a changefeed that sink to mysql.

What did you expect to see?

no error message in downstream mysql.

What did you see instead?

Mysql keeps logging error about tidb_cdc_write_source variable.

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)
@asddongmen asddongmen added type/bug The issue is confirmed as a bug. component/sink Sink component. severity/minor area/ticdc Issues or PRs related to TiCDC. labels Jun 12, 2023
@asddongmen asddongmen self-assigned this Jun 12, 2023
@asddongmen asddongmen mentioned this issue Jun 12, 2023
Merged
@asddongmen asddongmen added affects-6.5 This bug affects the 6.5.x(LTS) versions. affects-7.1 This bug affects the 7.1.x(LTS) versions. labels Jun 14, 2023
ti-chi-bot bot pushed a commit that referenced this issue Jun 15, 2023
@asddongmen
mysql (ticdc): only set write source when downstream is supported (#9175
72afa81 
)

close #9180
This was referenced Jun 15, 2023
Merged
Merged
@nongfushanquan nongfushanquan mentioned this issue Jun 21, 2023
Merged
16 tasks
ti-chi-bot bot pushed a commit that referenced this issue Jul 3, 2023
@ti-chi-bot
mysql (ticdc): only set write source when downstream is supported (#9175
cabb1c0 
) (#9237)

close #9180
@nongfushanquan nongfushanquan mentioned this issue Jul 14, 2023
Merged
17 tasks
ti-chi-bot bot pushed a commit that referenced this issue Aug 8, 2023
@ti-chi-bot
mysql (ticdc): only set write source when downstream is supported (#9175
647516c 
) (#9236)

close #9180
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@asddongmen asddongmen

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affects-6.5 This bug affects the 6.5.x(LTS) versions. affects-7.1 This bug affects the 7.1.x(LTS) versions. area/ticdc Issues or PRs related to TiCDC. component/sink Sink component. severity/minor type/bug The issue is confirmed as a bug.
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mysql (ticdc): only set write source when downstream is supported asddongmen/tiflow
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@asddongmen