Github user zentol commented on the issue:
https://github.com/apache/flink/pull/3838
Here's a preliminary changelog:
General:
- rebase branch to current master
- incremented version to 1.5-SNAPSHOT
- fixed kafka-connector dependency declaration
- set to provided
- scala version set to scala.binary.version
- flink version set to project.version
- applied checkstyle
- disabled method/parameter name rules for API classes
- assigned flink-python-streaming to 'libraries' travis profile
API:
- PDS#map()/flat_map() now return PythonSingleOutputStreamOperator
- renamed PDS#print() to PDS#output()
- print is a keyword in python and thus not usable in native python APIs
- added PythonSingleOutputStreamOperator#name()
- removed env#execute methods that accepted local execution argument as
they are redundant due to environment factory methods
Moved/Renamed:
- made SerializerMap top-level class and renamed it to AdapterMap
- Moved UtilityFunctions#adapt to AdapterMap class
- renamed UtilityFunctions to InterpreterUtils
- moved PythonobjectInputStream2 to SerializationUtils
- renamed PythonObjectInputStream2 to
SerialVersionOverridingPythonObjectInputStream
Functions:
- Introduced AbstractPythonUDF class for sharing
RichRunction#open()/close() implementations
- PythonOutputSelector now throws FlinkRuntimeException when failing during
initialization
- added generic return type to Serializationutils#deserializeObject
- added new serializers for PyBoolean/-Float/-Integer/-Long/-String
- PyObjectSerializer not properly fails when an exceptioin occurs
- improved error printing
- PythonCollector now typed to Object and properly converts non-PyObjects
- jython functions that use a collector now have Object has output type
- otherwise you would get ClassCastException if jython returns
something that isn't a PyObject
PythonStreamBinder
- adjusted to follow PythonPlanBinder structure
- client-like main() exception handling
- replaced Random usage with UUID.randomUIID()
- now loads GlobalConfiguration
- local/distributed tmp dir now configurable
- introduced PythonOptions
- no longer generate plan.py but instead import it directly via the
PythonInterpreter
Environment:
- Reworked static environment factory methods from
PythonStreamExecutionEnvironment into a PythonEnvironmentFactory
- program main() method now accepts a PythonEnvironmentFactory
- directories are now passed properly to the environment instead of using
static fields
- removed PythonEnvironmentConfig
Tests:
- removed 'if __name__ == '__main__':' blocks from tests since the
condition is never fulfilled
- removed python TestBase class
- removed print statements from tests
- standardized test job names
- cleaned up PythonStreamBinderTest / made it more consistent with
PythonPlanBinderTest
- run_all_tests improvements
- stop after first failure
- print stacktrace on failure
- no longer relies on dirname() to get cwd but uses the module file
location instead
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