Github user zentol commented on a diff in the pull request:
https://github.com/apache/flink/pull/3232#discussion_r98445731
--- Diff:
flink-libraries/flink-python/src/main/python/org/apache/flink/python/api/flink/plan/Environment.py
---
@@ -27,17 +27,24 @@
import sys
from struct import pack
+_env_counter = 0
+_last_env_id = -1
+_operating = False
--- End diff --
We have to simplify these things.
How about this:
Create a global Container that contains all created Environments and stores
them in a list. It should have a method like `create_execution_environment()`
that returns a new Environment with the appropriate counter.
When `execute()` is called we then do something like this:
```
envID = this.container.fetch_id_of_env_to_execute()
if this.envID == envID:
//execute stuff as usual
else:
return //fall-through
```
We would then no longer need any global variable.
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