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MySQL may throw deadlock errors when multiple DAG-Processor instances are
running. The issue is a fetch sub-query being used within a delete query, which
is sometimes causing a deadlock in MySQL.


(cherry picked from commit dfcd049)

Co-authored-by: Sumit Maheshwari msumit@users.noreply.github.com
Co-authored-by: Sumit Maheshwari sumitm@uber.com
Co-authored-by: Jarek Potiuk jarek@potiuk.com

…60166)

MySQL may throw deadlock errors when multiple DAG-Processor instances are
running. The issue is a fetch sub-query being used within a delete query, which
is sometimes causing a deadlock in MySQL.

---------
(cherry picked from commit dfcd049)

Co-authored-by: Sumit Maheshwari <msumit@users.noreply.github.com>
Co-authored-by: Sumit Maheshwari <sumitm@uber.com>
Co-authored-by: Jarek Potiuk <jarek@potiuk.com>
@ephraimbuddy ephraimbuddy force-pushed the backport-dfcd049-v3-1-test branch from d5e10f9 to b1f5ae2 Compare January 14, 2026 10:43
@ephraimbuddy ephraimbuddy marked this pull request as ready for review January 14, 2026 10:43
@ephraimbuddy ephraimbuddy merged commit 030ada1 into v3-1-test Jan 14, 2026
87 of 94 checks passed
@ephraimbuddy ephraimbuddy deleted the backport-dfcd049-v3-1-test branch January 14, 2026 11:34
ephraimbuddy pushed a commit that referenced this pull request Jan 14, 2026
…60166) (#60418)

MySQL may throw deadlock errors when multiple DAG-Processor instances are
running. The issue is a fetch sub-query being used within a delete query, which
is sometimes causing a deadlock in MySQL.

---------
(cherry picked from commit dfcd049)

Co-authored-by: Sumit Maheshwari <msumit@users.noreply.github.com>
Co-authored-by: Sumit Maheshwari <sumitm@uber.com>
Co-authored-by: Jarek Potiuk <jarek@potiuk.com>
ephraimbuddy pushed a commit that referenced this pull request Jan 16, 2026
…60166) (#60418)

MySQL may throw deadlock errors when multiple DAG-Processor instances are
running. The issue is a fetch sub-query being used within a delete query, which
is sometimes causing a deadlock in MySQL.

---------
(cherry picked from commit dfcd049)

Co-authored-by: Sumit Maheshwari <msumit@users.noreply.github.com>
Co-authored-by: Sumit Maheshwari <sumitm@uber.com>
Co-authored-by: Jarek Potiuk <jarek@potiuk.com>
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2 participants