shuai.xu created FLINK-5866:
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Summary: The implementation of FailoverRegion.
Key: FLINK-5866
URL: https://issues.apache.org/jira/browse/FLINK-5866
Project: Flink
Issue Type: Sub-task
Components: JobManager
Reporter: shuai.xu
Assignee: shuai.xu
In flip1, FailoverRegion will manage the failover of a minimal pipelined
conncected executions.
One job graph may has several FailoverRegions and they will be calculated
statically after job graph is attached.
FailoverRegion has serval states, CREATED, CANCELING, CANCELED, RUNNING, it
will transforms its state according to the state of the ExectionVertexes it
contains and drives the failover during state transformation.
A FailoverRegion may have preceding and succeeding FailoverRegions. It will
wait for its preceding ones and notice its succeeding ones when finishing.
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