zhijiang created FLINK-12735:
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Summary: Make shuffle environment implementation independent with
IOManager
Key: FLINK-12735
URL: https://issues.apache.org/jira/browse/FLINK-12735
Project: Flink
Issue Type: Sub-task
Components: Runtime / Network
Reporter: zhijiang
Assignee: zhijiang
The current creation of {{NetworkEnvironment}} is relying on {{IOManager}} from
{{TaskManagerServices}}. In order not to rely on external specific components
for implementing shuffle environment, and let the specific implementation
creates internal components if required.
The current abstract {{IOManager}} has two roles, one is for file channel
management based on temp directories configuration, and the other is providing
abstract methods for reading/writing files. We could further extract the file
channel management as a separate internal class which could be reused for all
the required components, like current {{BoundedBlockingSubpartition}}. To do
so, the shuffle environment should also creates its internal channel manager to
break dependency with {{IOManager}}.
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