AP-25628: add checkpoint/restore (CRaC support in executor)#88
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bernd-wiswedel wants to merge 1 commit intomasterfrom
Open
AP-25628: add checkpoint/restore (CRaC support in executor)#88bernd-wiswedel wants to merge 1 commit intomasterfrom
bernd-wiswedel wants to merge 1 commit intomasterfrom
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Pull request overview
Adds a CRaC (Coordinated Restore at Checkpoint) hook to the KNIME Python gateway tracking layer so Python processes are terminated before the JVM is checkpointed, aiming to improve executor startup/restore behavior.
Changes:
- Register a
PhasedInitcallback inPythonGatewayTrackerto run cleanup before checkpointing. - Reuse existing gateway cleanup logic (
clear()) to forcefully terminate tracked Python gateways/processes.
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AP-25628 (PoC: "CRaC" for faster executor startup (suspend VM after start))
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AP-25628 (PoC: "CRaC" for faster executor startup (suspend VM after start))