Yes it is.
Le Jeudi 14 avril 2016 10h39, Matthias J. Sax <[email protected]> a écrit :
For the fix, you need to use the current development version of Flink,
ie, change your maven dependency from <version>1.0</version> to
<version>1.1-SNAPSHOT</version>
One question: what is FlinkGitService.class? It does only show up when
you get the ClassLoader:
> ClassLoader loader = URLClassLoader.newInstance(new URL[] { new URL(path) },
> FlinkGitService.class.getClassLoader());
It is the class that contains methods deploy() and getFlinkTopology() ?
-Matthias
On 04/14/2016 05:20 AM, star jlong wrote:
> What I'm trying to say is that to get submit the flink topology to flink, I
> had to do an invocation of the mainMethod(which contain the actaul topology)
> of my topology with the class java.lang.reflect.Method.That is if you a take
> look at the following the topology the mainMethod is buildTopologypublic
> class WordCountTopology {
> public static void main(String[] args) throws Exception {
>
> Config conf = new Config();
> conf.setDebug(true);
> if (args != null && args.length > 0) {
>
> conf.setNumWorkers(1);
> conf.setMaxTaskParallelism(1);
> FlinkSubmitter.submitTopology(args[0], conf, buildTopology());
>
> }
> // Otherwise, we are running locally
> else {
> conf.setMaxTaskParallelism(1);
> FlinkLocalCluster cluster = new FlinkLocalCluster();
> cluster.submitTopology("word-count", conf, buildTopology());
> Thread.sleep(10000);
> }
> }
>
> public static FlinkTopology buildTopology() {
>
> TopologyBuilder builder = new TopologyBuilder();
>
> builder.setSpout("spout", new RandomSentenceSpout(), 1);
> builder.setBolt("split", new SplitSentence(), 1).shuffleGrouping("spout");
> builder.setBolt("count", new WordCount(), 1).fieldsGrouping("split", new
>Fields("word"));
>
> builder.setBolt("writeIntoFile", new
>BoltFileSink("/home/username/wordcount.txt", new OutputFormatter() {
> private static final long serialVersionUID = 1L;
>
> @Override
> public String format(Tuple tuple) {
> return tuple.toString();
> }
> }), 1).shuffleGrouping("count");
>
> return FlinkTopology.createTopology(builder);
>
> }
> }That is the method that I want to invoke from my jar so that I will be able
> to do the submitting of the topology without any problem ie
>
> final FlinkClient cluster =
> FlinkClient.getConfiguredClient(conf);cluster.submitTopology(topologyId,
> uploadedJarLocation, getFlinkTopogy(String.format("file://%s",
> jarPath),properties.getProperty("topologyMainClass"),
> properties.getProperty("methodName")));
> Where getFlinkTopology() return the contains actually topology
>
> But while doing that reflection I had an exception.
>
> Another question please. How do I make used of the hotflix of Till.
>
> Le Jeudi 14 avril 2016 0h19, Matthias J. Sax <[email protected]> a écrit :
>
>
> I cannot follow completely in your last step when you fail. What do you
> mean by "I'm stuck at the level when I want to copy that from the jar to
> submit it to flink"?
>
> Btw: I copied the code from the SO question and it works for me on the
> current master (which includes Till's hotfix).
>
> -Matthias
>
>
> On 04/13/2016 09:39 PM, star jlong wrote:
>> Thanks Matthias for the reply.
>> Maybe I should explain what I want to do better.My objective is to deploy a
>> flink topology on flink using java but in the production mode. For that here
>> are the step that I have taken.
>> 1-Convert a sample wordcount storm topology to a flink topology as indicated
>> here https://flink.apache.org/news/2015/12/11/storm-compatibility.html2-Run
>> the topology on local mode (with my IDE eclipse) and on production mode by
>> assembling everything with a mvn clean install then submitting the jar to
>> flink on the command line with
>> ./bin/flink run -c stormWorldCount.WordCountTopology
>> /home/raymond/testFlink/target/storm_example-0.0.1-SNAPSHOT-jar-with-dependencies.jar
>> myFlinkTopology
>> At this level everything went well.
>>
>> Then I wanted to submit the same jar to flink on the production mode by
>> using a java program. Then I decided to create a mainMethod in my topology
>> that returns the flinkTopology which I wanted to submit to flink using the
>> FlinkClient. But I'm stuck at the level when I want to copy that from the
>> jar to submit it to flink.
>>
>> I know that is possible because I have used the same procedure with a storm
>> topology that it works perfectly well.
>> What I'm missing please?
>> jstar
>>
>> Le Mercredi 13 avril 2016 19h23, Matthias J. Sax <[email protected]> a
>>écrit :
>>
>>
>> Hi jstar,
>>
>> I need to have a close look. But I am wondering why you use reflection
>> in the first place? Is there any specific reason for that?
>>
>> Furthermore, the example provided in project maven-example also covers
>> the case to submit a topology to Flink via Java. Have a look at
>> org.apache.flink.storm.wordcount.WordCountRemoteBySubmitter
>>
>> It contains a main() method and you can just run it as a regular Java
>> program in your IDE.
>>
>> The SO question example should also work; it also contains a main()
>> method, so you should be able to run it.
>>
>> Btw: If you use Storm-Compatiblitly-API there is no reason the get an
>> ExecutuionEnvironment in you code. This happen automatically with
>> FlinkClient/FlinkSubmitter.
>>
>> Furthermore, I would recommend to use FlinkSubmitter instead of
>> FlinkClient as it is somewhat simpler to use.
>>
>> About SO question: I guess the problem is the jar assembling. The user says
>>
>> "Since I'using maven to handle my dependencies, I do a Mvn clean install
>> to obtain the jar."
>>
>> I guess this is not sufficient to bundle a correct jar. Have a look into
>> pom.xml from storm-examples. It uses maven plug-ins in assemble the jar
>> correctly. (Regular maven artifact do not work for job submission...)
>>
>> Will have a close look and follow up... Hope this helps already.
>>
>> -Matthias
>>
>> On 04/13/2016 06:23 PM, star jlong wrote:
>>> Thanks for the reply.
>>> @Stephen, I try using RemoteEnvironment to submit my topology to flink.
>>> Here is the try that I did RemoteEnvironment remote = new
>>> RemoteEnvironment(ipJobManager, 6123, jarPath); remote.execute();
>>> While running the program, this is the exception that I got.
>>> java.lang.RuntimeException: No data sinks have been created yet. A program
>>> needs at least one sink that consumes data. Examples are writing the data
>>> set or printing it.
>>>
>>>
>>> Le Mercredi 13 avril 2016 16h54, Till Rohrmann <[email protected]> a
>>>écrit :
>>>
>>>
>>> I think this is not the problem here since the problem is still happening
>>> on the client side when the FlinkTopology tries to copy the registered
>>> spouts. This happens before the job is submitted to the cluster. Maybe
>>> Mathias could chime in here.
>>>
>>> Cheers,
>>> Till
>>>
>>> On Wed, Apr 13, 2016 at 5:39 PM, Stephan Ewen <[email protected]> wrote:
>>>
>>>> Hi!
>>>>
>>>> For flink standalone programs, you would use a "RemoteEnvironment"
>>>>
>>>> For Storm, I would use the "FlinkClient" in "org.apache.flink.storm.api".
>>>> That one should deal with jars, classloaders, etc for you.
>>>>
>>>> Stephan
>>>>
>>>>
>>>> On Wed, Apr 13, 2016 at 3:43 PM, star jlong <[email protected]>
>>>> wrote:
>>>>
>>>>> Thanks for the suggestion. Sure those examples are interesting and I have
>>>>> deploy them successfully on flink. The deployment is done the command
>>>> line
>>>>> that is doing something like
>>>>> bin/flink run example.jarBut what I want is to submit the topology to
>>>>> flink using a java program.
>>>>>
>>>>> Thanks.
>>>>>
>>>>> Le Mercredi 13 avril 2016 14h12, Chesnay Schepler <
>>>> [email protected]>
>>>>> a écrit :
>>>>>
>>>>>
>>>>> you can find examples here:
>>>>>
>>>>>
>>>> https://github.com/apache/flink/tree/master/flink-contrib/flink-storm-examples
>>>>>
>>>>> we haven't established yet that it is an API issue; it could very well
>>>>> be caused by the reflection magic you're using...
>>>>>
>>>>> On 13.04.2016 14:57, star jlong wrote:
>>>>>> Ok, it seems like there an issue with the api. So please does anybody
>>>>> has a working example for deploying a topology using the flink dependency
>>>>> flink-storm_2.11 or any other will be welcoming.
>>>>>>
>>>>>> Thanks,
>>>>>> jstar
>>>>>>
>>>>>> Le Mercredi 13 avril 2016 13h44, star jlong
>>>>> <[email protected]> a écrit :
>>>>>>
>>>>>>
>>>>>> Hi Schepler,
>>>>>>
>>>>>> Thanks for the concerned. Yes I'm actaully having the same issue as
>>>>> indicated on that post because I'm the one that posted that issue.
>>>>>>
>>>>>> Le Mercredi 13 avril 2016 13h35, Chesnay Schepler <
>>>>> [email protected]> a écrit :
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>> http://stackoverflow.com/questions/36584784/issues-while-submitting-a-topology-to-apache-flink-using-the-flink-api
>>>>>>
>>>>>> On 13.04.2016 14:28, Till Rohrmann wrote:
>>>>>>> Hi jstar,
>>>>>>>
>>>>>>> what's exactly the problem you're observing?
>>>>>>>
>>>>>>> Cheers,
>>>>>>> Till
>>>>>>>
>>>>>>> On Wed, Apr 13, 2016 at 2:23 PM, star jlong
>>>> <[email protected]
>>>>>>
>>>>>>> wrote:
>>>>>>>
>>>>>>>> Hi there,
>>>>>>>>
>>>>>>>> I'm jstar. I have been playing around with flink. I'm very much
>>>>> interested
>>>>>>>> in submitting a topoloy to flink using its api. As indicated
>>>>>>>> on stackoverflow, that is the try that I have given. But I was stuck
>>>>> with
>>>>>>>> some exception. Please any help will be welcoming.
>>>>>>>>
>>>>>>>>
>>>>>>>> Thanks.
>>>>>>>> jstar
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>
>>>
>>>
>>
>>
>>
>>
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