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From zentol <...@git.apache.org>
Subject [GitHub] flink pull request #3838: [FLINK-5886] Python API for streaming applications
Date Mon, 22 May 2017 11:59:11 GMT
Github user zentol commented on a diff in the pull request:

    --- Diff: flink-libraries/flink-streaming-python/src/main/java/org/apache/flink/streaming/python/api/environment/PythonStreamExecutionEnvironment.java
    @@ -0,0 +1,442 @@
    + * 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.api.environment;
    +import org.apache.flink.annotation.Public;
    +import org.apache.flink.api.common.JobExecutionResult;
    +import org.apache.flink.api.common.cache.DistributedCache;
    +import org.apache.flink.api.java.tuple.Tuple2;
    +import org.apache.flink.api.java.typeutils.TypeExtractor;
    +import org.apache.flink.configuration.Configuration;
    +import org.apache.flink.core.fs.FileSystem;
    +import org.apache.flink.core.fs.Path;
    +import org.apache.flink.runtime.filecache.FileCache;
    +import org.apache.flink.streaming.api.CheckpointingMode;
    +import org.apache.flink.streaming.api.environment.LocalStreamEnvironment;
    +import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
    +import org.apache.flink.streaming.api.functions.source.SourceFunction;
    +import org.apache.flink.streaming.python.api.datastream.PythonDataStream;
    +import org.apache.flink.streaming.python.api.functions.PythonGeneratorFunction;
    +import org.apache.flink.streaming.python.api.functions.PythonIteratorFunction;
    +import org.apache.flink.streaming.python.api.functions.UtilityFunctions;
    +import org.apache.flink.streaming.python.util.serialization.PyObjectSerializer;
    +import org.python.core.PyObject;
    +import org.python.core.PyString;
    +import org.python.core.PyInteger;
    +import org.python.core.PyLong;
    +import org.python.core.PyUnicode;
    +import org.python.core.PyTuple;
    +import org.python.core.PyObjectDerived;
    +import org.python.core.PyInstance;
    +import org.slf4j.Logger;
    +import org.slf4j.LoggerFactory;
    +import java.io.IOException;
    +import java.net.URI;
    +import java.net.URISyntaxException;
    +import java.nio.file.Paths;
    +import java.util.Collection;
    +import java.util.Iterator;
    +import java.util.Random;
    + * A thin wrapper layer over {@link StreamExecutionEnvironment}.
    + *
    + * <p>The PythonStreamExecutionEnvironment is the context in which a streaming
program is executed.
    + * </p>
    + *
    + * <p>The environment provides methods to control the job execution (such as setting
the parallelism
    + * or the fault tolerance/checkpointing parameters) and to interact with the outside
    + * (data access).</p>
    + */
    +public class PythonStreamExecutionEnvironment {
    +	private final StreamExecutionEnvironment env;
    +	private static final Logger LOG = LoggerFactory.getLogger(PythonStreamExecutionEnvironment.class);
    --- End diff --
    static fields should be above non-static fields.

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