zhijiang created FLINK-13753:
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Summary: Integrate new Source Operator with Mailbox Model in
StreamTask
Key: FLINK-13753
URL: https://issues.apache.org/jira/browse/FLINK-13753
Project: Flink
Issue Type: Improvement
Components: Runtime / Task
Reporter: zhijiang
Assignee: zhijiang
This is the umbrella issue for integrating new source operator with mailbox
model in StreamTask.
The motivation is based on
[FLIP-27|https://cwiki.apache.org/confluence/display/FLINK/FLIP-27%3A+Refactor+Source+Interface]
which proposes to refactor the whole source API and the integration of
task-level actions (including checkpoint, timer, async operator) with unified
[mailbox model|
[https://docs.google.com/document/d/1eDpsUKv2FqwZiS1Pm6gYO5eFHScBHfULKmH1-ZEWB4g]]
on runtime side.
* The benefits are simple unified processing logics because only one single
thread handles all the actions without concurrent issue, and further getting
rid of lock dependency which causes unfair lock concern in checkpoint process.
* We still need to support the current legacy source in some releases which
would probably be used for a while, especially for the scenario of performance
concern.
The design doc is
[https://docs.google.com/document/d/13x9M7k1SRqkOFXP0bETcJemIRyJzoqGgkdy11pz5qHM/edit#|https://docs.google.com/document/d/13x9M7k1SRqkOFXP0bETcJemIRyJzoqGgkdy11pz5qHM/edit]|[https://docs.google.com/document/d/13x9M7k1SRqkOFXP0bETcJemIRyJzoqGgkdy11pz5qHM/edit#|https://docs.google.com/document/d/13x9M7k1SRqkOFXP0bETcJemIRyJzoqGgkdy11pz5qHM/edit]]
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