GitHub user tony810430 opened a pull request:
https://github.com/apache/flink/pull/3633
[FLINK-5982] [runtime] Refactor AbstractInvokable and StatefulTask
This PR wants to merge `AbstractInvokable` and `StatefulTask` to eliminate
"lazy initialization" in `Task`.
The following are what I did in this PR:
1. Merge `AbstractInvokable` and `StatefulTask` and use constructor to
initialize `Environment` and `TaskStateHandles` in `AbstractInvokable`.
2. Update all subclasses and corresponding tests. For now, batch tasks are
still not stateful, so I added `IllegalStateException()` in constructor and
`UnsupportedOperationException()` in the methods for supporting stateful task.
3. Update the behavior of `AbstractInvokable` in `Task`, including
`loadAndInstantiateInvokable()`, `triggerCheckpointBarrier()` and
`notifyCheckpointComplete()`.
4. Add tests for modification in `Task` and tests the constructors'
behavior for all concrete subclasses which inherit `AbstractInvokable`.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/tony810430/flink FLINK-5982
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/3633.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #3633
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commit 31748905eaa3b4897f0b02473526b7fa05c2304e
Author: Tony Wei <tony19920...@gmail.com>
Date: 2017-03-15T03:13:41Z
[FLINK-5982] Refactor AbstractInvokable and StatefulTask
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