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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-5815) Add resource files configuration for Yarn Mode
Date Thu, 02 Mar 2017 09:10:45 GMT

    [ https://issues.apache.org/jira/browse/FLINK-5815?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15891869#comment-15891869

ASF GitHub Bot commented on FLINK-5815:

Github user wenlong88 commented on a diff in the pull request:

    --- Diff: flink-fs-tests/src/test/java/org/apache/flink/hdfstests/FileUtilsTest.java ---
    @@ -0,0 +1,117 @@
    + * 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.hdfstests;
    +import org.apache.flink.core.fs.FSDataInputStream;
    +import org.apache.flink.core.fs.FSDataOutputStream;
    +import org.apache.flink.core.fs.FileSystem;
    +import org.apache.flink.core.fs.Path;
    +import org.apache.flink.test.util.AbstractTestBase;
    +import org.apache.flink.util.FileUtils;
    +import org.apache.hadoop.conf.Configuration;
    +import org.apache.hadoop.hdfs.MiniDFSCluster;
    +import org.junit.*;
    +import org.junit.rules.TemporaryFolder;
    +import java.io.File;
    +import java.io.IOException;
    +import java.net.URI;
    +import static org.junit.Assert.fail;
    + * Created by wenlong.lwl on 2017/2/21.
    --- End diff --
    sorry, this is a missing clean up from our code base.

> Add resource files configuration for Yarn Mode
> ----------------------------------------------
>                 Key: FLINK-5815
>                 URL: https://issues.apache.org/jira/browse/FLINK-5815
>             Project: Flink
>          Issue Type: Improvement
>          Components: Client, YARN
>    Affects Versions: 1.3.0
>            Reporter: Wenlong Lyu
>            Assignee: Wenlong Lyu
> Currently in flink, when we want to setup a resource file to distributed cache, we need
to make the file accessible remotely by a url, which is often difficult to maintain a service
like that. What's more, when we want do add some extra jar files to job classpath, we need
to copy the jar files to blob server when submitting the jobgraph. In yarn, especially in
flip-6, the blob server is not running yet when we try to start a flink job. 
> Yarn has a efficient distributed cache implementation for application running on it,
what's more we can be easily share the files stored in hdfs in different application by distributed
cache without extra IO operations. 
> I suggest to introduce -yfiles, -ylibjars -yarchives options to FlinkYarnCLI to enable
yarn user setup their job resource files by yarn distributed cache. The options is compatible
with what is used in mapreduce, which make it easy to use for yarn user who generally has
experience on using mapreduce.

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