[FLINK-4596] RESTART_STRATEGY is not really pluggable

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.2.0
• Component/s: Runtime / Coordination
• Assignee: Unassigned
• Reporter: Nagarjun Guraja
• Created: 08/Sep/16 01:35
• Updated: 13/Apr/21 20:31
• Resolved: 04/Nov/16 13:59

Description

Standalone cluster config accepts an implementation(class) as part of the yaml config file but that does not work either as cluster level restart strategy or streaming job level restart strategy

CLUSTER LEVEL CAUSE: createRestartStrategyFactory converts configured value of strategyname to lowercase and searches for class name using lowercased string.
JOB LEVEL CAUSE: Checkpointed streams have specific code to add fixeddelayrestartconfiguration if no RestartConfiguration is specified in the job env. Also, jobs cannot provide their own custom restart strategy implementation and are constrained to pick up one of the three restart strategies provided by flink.

FIX: Do not lower case the strategy config value, support a new restartconfiguration to fallback to cluster level restart strategy and support jobs to provide custom implementation of the strategy class itself.

Issue Links

• links to: GitHub Pull Request #2592