Add check for context cancellation in CopyInto methods for PG to PG#3958
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Amogh-Bharadwaj wants to merge 1 commit intomainfrom
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Add check for context cancellation in CopyInto methods for PG to PG#3958Amogh-Bharadwaj wants to merge 1 commit intomainfrom
Amogh-Bharadwaj wants to merge 1 commit intomainfrom
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An issue was discovered recently where when a mirror running initial load from PG to PG is dropped, the copy process continues to run on source. A hint in pgx for CopyFrom reveals that context cancellation may not be acted upon while the reader is still open: ``` CopyFrom executes the copy command sql and copies all of r to the PostgreSQL server. Note: context cancellation will only interrupt operations on the underlying PostgreSQL network connection. Reads on r could still block. ``` This PR adds a check for context cancellation in the CopyInto methods for PG to PG, which should allow the copy process to be interrupted when the context is cancelled, preventing it from continuing to run on the source when a mirror is dropped.
serprex
approved these changes
Feb 18, 2026
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An issue was discovered recently where when a mirror running initial load from PG to PG is dropped, the copy process continues to run on source.
A hint in pgx for CopyFrom reveals that context cancellation may not be acted upon while the reader is still open:
This PR adds a check for context cancellation in the CopyInto methods for PG to PG, closing the reader when necessary, allowing the connections to be dropped.