zhuzhurk opened a new pull request #7255: [FLINK-10945] Use InputDependencyConstraint to avoid resource dead… URL: https://github.com/apache/flink/pull/7255 …locks in LAZY_FROM_SOURCES scheduling when resources are limited ## What is the purpose of the change This PR add a job config InputDependencyConstraint, which helps to avoid resource deadlocks in LAZY_FROM_SOURCES scheduling when resources are limited, as described in [FLINK-10945](https://issues.apache.org/jira/browse/FLINK-10945). ## Brief change log - *Add InputDependencyConstraint to ExecutionConfig* - *Adjust isConsumable interface in IntermediateResultPartition to fit for the data actual consumable definition* - Change current execution lazy scheduling logic(in Execution.scheduleOrUpdateConsumers(edges)) to schedule tasks only if the InputDependencyConstraint is satisfied(an interface ExecutionVertex.checkInputDependencyConstraints is added to serve this purpose). ## Verifying this change This change added tests and can be verified as follows: - *Added IntermediateResultPartitionTest to validate IntermediateResultPartition changes* - *Added ExecutionVertexInputConstraintTest to validate the constraint check logic in ExecutionVertex* ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (no) - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (yes) - The serializers: (no) - The runtime per-record code paths (performance sensitive): (no) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes) - The S3 file system connector: (no) ## Documentation - Does this pull request introduce a new feature? (yes) - If yes, how is the feature documented? (JavaDocs)
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