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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-11048) Ability to programmatically execute streaming pipeline with savepoint restore
Date Fri, 07 Dec 2018 00:44:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-11048?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16712183#comment-16712183

ASF GitHub Bot commented on FLINK-11048:

tweise commented on a change in pull request #7249: [FLINK-11048] Ability to programmatically
execute streaming pipeline with savepoint restore
URL: https://github.com/apache/flink/pull/7249#discussion_r239665450

 File path: flink-streaming-java/src/main/java/org/apache/flink/streaming/api/environment/RemoteStreamEnvironment.java
 @@ -169,39 +170,46 @@ public RemoteStreamEnvironment(String host, int port, Configuration
-	@Override
-	public JobExecutionResult execute(String jobName) throws ProgramInvocationException {
-		StreamGraph streamGraph = getStreamGraph();
-		streamGraph.setJobName(jobName);
-		transformations.clear();
-		return executeRemotely(streamGraph, jarFiles);
+	protected List<URL> getJarFiles() throws ProgramInvocationException {
+		return jarFiles;
 	 * Executes the remote job.
-	 * @param streamGraph
-	 *            Stream Graph to execute
+	 * @param streamExecutionEnvironment
+	 *            Execution Environment with Stream Graph to execute
 	 * @param jarFiles
 	 * 			  List of jar file URLs to ship to the cluster
 	 * @return The result of the job execution, containing elapsed time and accumulators.
-	protected JobExecutionResult executeRemotely(StreamGraph streamGraph, List<URL> jarFiles)
throws ProgramInvocationException {
+	public static JobExecutionResult executeRemotely(StreamExecutionEnvironment streamExecutionEnvironment,
 Review comment:
   If we want to retain / put back the existing `protected JobExecutionResult executeRemotely`,
then we would need to pass around `StreamGraph` instead of the environment. There are then
other bits and pieces that also need to be passed around, such as the class loader. That's
a bit difficult to see unless you actually change the code.
   That protected method should ideally not be referenced outside of Flink, but as it happens
we just used it to bridge the gap in Beam.. 
   Regarding the static method, it isn't ideal to have this in the public API either, but
that's the purpose of the change.. Every change to the parameter list becomes an incompatible
change and may cause pain going forward. 
   I have also added the ability to set the savepoint option on the environment, which seems
more user friendly. The minimum change btw is here, in case we want to reconsider the route
we are taking here: https://github.com/apache/flink/compare/master...tweise:FLINK-11048.savepointRestore.min?expand=1

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> Ability to programmatically execute streaming pipeline with savepoint restore  
> -------------------------------------------------------------------------------
>                 Key: FLINK-11048
>                 URL: https://issues.apache.org/jira/browse/FLINK-11048
>             Project: Flink
>          Issue Type: Improvement
>          Components: DataStream API
>    Affects Versions: 1.7.0
>            Reporter: Thomas Weise
>            Assignee: Thomas Weise
>            Priority: Minor
>              Labels: pull-request-available
> RemoteStreamEnvironment.execute doesn't support restore from savepoint, though the underlying
ClusterClient does. Add an explicit "execute remotely" that can be used by downstream projects.
> [https://lists.apache.org/thread.html/6fff05d4a8444d1c6fa139d63605d51f610caff46605a4cdbb35cd50@%3Cdev.flink.apache.org%3E]

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