zhijiang created FLINK-11776:
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Summary: Refactor to simplify the process of
scheduleOrUpdateConsumers
Key: FLINK-11776
URL: https://issues.apache.org/jira/browse/FLINK-11776
Project: Flink
Issue Type: Sub-task
Components: Runtime / Coordination
Reporter: zhijiang
Assignee: zhijiang
Based on the work of
[FLINK-11417|https://issues.apache.org/jira/browse/FLINK-11417], the process of
{{Execution#scheduleOrUpdateConsumers}} do not need to consider the race
condition with schedule process, so we can refactor to make it easy to handle.
* The concurrent data structure for cacheing partial input channel descriptor
can be replaced by common list.
* If the consumer is in {{CREATED}} state, we only need to schedule it and the
partition info would be known during deployment.
* If the consumer is in {{SCHEDULED}} state, we need do nothing.
* If the consumer is in {{RUNNING}} state, we can send partition info
immediately.
* If the consumer is in {{DEPLOYING}} state, we can cache the partition info
in order to send them in batch after consumer switching to {{RUNNING}} state.
* {{PartialInputChannelDeploymentDescriptor}} is not needed any more, we can
cache partition info directly.
This refactoring is also a preparation work for future introducing
{{ShuffleMaster}} in
[FLINK-11391|https://issues.apache.org/jira/browse/FLINK-11391].
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