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Date: Wed, 14 Jun 2017 09:49:01 +0000 (UTC)
From: "ASF GitHub Bot (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (FLINK-5886) Python API for streaming
 applications
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archived-at: Wed, 14 Jun 2017 09:49:13 -0000


    [ https://issues.apache.org/jira/browse/FLINK-5886?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16048969#comment-16048969 ] 

ASF GitHub Bot commented on FLINK-5886:
---------------------------------------

Github user zentol commented on a diff in the pull request:

    https://github.com/apache/flink/pull/3838#discussion_r121900659
  
    --- Diff: flink-libraries/flink-streaming-python/src/main/java/org/apache/flink/streaming/python/util/serialization/PyObjectSerializer.java ---
    @@ -0,0 +1,59 @@
    +/*
    + * Licensed to the Apache Software Foundation (ASF) under one
    + * or more contributor license agreements.  See the NOTICE file
    + * distributed with this work for additional information
    + * regarding copyright ownership.  The ASF licenses this file
    + * to you under the Apache License, Version 2.0 (the
    + * "License"); you may not use this file except in compliance
    + * with the License.  You may obtain a copy of the License at
    + *
    + *     http://www.apache.org/licenses/LICENSE-2.0
    + *
    + * Unless required by applicable law or agreed to in writing, software
    + * distributed under the License is distributed on an "AS IS" BASIS,
    + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    + * See the License for the specific language governing permissions and
    + * limitations under the License.
    + */
    +package org.apache.flink.streaming.python.util.serialization;
    +
    +import com.esotericsoftware.kryo.Kryo;
    +import com.esotericsoftware.kryo.Serializer;
    +import com.esotericsoftware.kryo.io.Input;
    +import com.esotericsoftware.kryo.io.Output;
    +import org.python.core.PyObject;
    +
    +import java.io.IOException;
    +
    +/**
    + * A serializer implementation for PyObject class type. Is is used by the Kryo serialization
    + * framework. {@see https://github.com/EsotericSoftware/kryo#serializers}
    + */
    +public class PyObjectSerializer extends Serializer<PyObject> {
    +
    +	public void write (Kryo kryo, Output output, PyObject po) {
    --- End diff --
    
    remove space after `write`


> Python API for streaming applications
> -------------------------------------
>
>                 Key: FLINK-5886
>                 URL: https://issues.apache.org/jira/browse/FLINK-5886
>             Project: Flink
>          Issue Type: New Feature
>          Components: Python API
>            Reporter: Zohar Mizrahi
>            Assignee: Zohar Mizrahi
>
> A work in progress to provide python interface for Flink streaming APIs. The core technology is based on jython and thus imposes two limitations: a. user defined functions cannot use python extensions. b. the python version is 2.x
> The branch is based on Flink release 1.2.0, as can be found here:
> https://github.com/zohar-pm/flink/tree/python-streaming
> In order to test it, someone can use IntelliJ IDE. Assuming IntelliJ was setup properly (see: https://ci.apache.org/projects/flink/flink-docs-release-1.3/internals/ide_setup.html), one can run/debug {{org.apache.flink.python.api.PythonStreamBinderTest}}, which in return will execute all the tests under {{/Users/zohar/dev/pm-flink/flink-libraries/flink-python/src/test/python/org/apache/flink/python/api/streaming}}


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