Nothing to do also with IntelliJ..do you have any sample project I
can reuse to test the job submission to a cluster?
I can't really understand why the classes within the fat jar are not
found when generating the PackagedProgram.
Ideally, I'd prefer to use REST only client (so no need to build
package programs and introduce classpath problems..) but I have 2
questions:
* I remember that when submitting jobs from REST there's no way to
detect failures in the job creation (like missing classes,
classpath problems, etc). Am I wrong?
* I'd like to monitor the progress of my batch job (for example I
can count the number of completed vertices wrt the total count of
vertices). Is there any suggested way to do that apart from polling?
Best,
Flavio
On Wed, Oct 28, 2020 at 12:19 PM Flavio Pompermaier
<pomperma...@okkam.it <mailto:pomperma...@okkam.it>> wrote:
I'm runnin the code from Eclipse, the jar exists and it contains
the classes Flink is not finding..maybe I can try to use IntelliJ
in the afternoon
On Wed, Oct 28, 2020 at 12:13 PM Chesnay Schepler
<ches...@apache.org <mailto:ches...@apache.org>> wrote:
@Kostas: Ah, I missed that.
@Flavio: the only alternative I can think your jar does not
contain the
classes, or does not exist at all on the machine your
application is run on.
On 10/28/2020 12:08 PM, Kostas Kloudas wrote:
> Hi all,
>
> I will have a look in the whole stack trace in a bit.
>
> @Chesnay Schepler I think that we are setting the correct
classloader
> during jobgraph creation [1]. Is that what you mean?
>
> Cheers,
> Kostas
>
> [1]
https://github.com/apache/flink/blob/master/flink-clients/src/main/java/org/apache/flink/client/program/PackagedProgramUtils.java#L122
>
> On Wed, Oct 28, 2020 at 11:02 AM Flavio Pompermaier
> <pomperma...@okkam.it <mailto:pomperma...@okkam.it>> wrote:
>> Always the same problem.
>>
>> Caused by: java.lang.ClassNotFoundException: it.test.XXX
>> at java.base/java.net
<http://java.net>.URLClassLoader.findClass(URLClassLoader.java:471)
>> at
java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:589)
>> at
org.apache.flink.util.FlinkUserCodeClassLoader.loadClassWithoutExceptionHandling(FlinkUserCodeClassLoader.java:61)
>> at
org.apache.flink.util.ChildFirstClassLoader.loadClassWithoutExceptionHandling(ChildFirstClassLoader.java:74)
>> at
org.apache.flink.util.FlinkUserCodeClassLoader.loadClass(FlinkUserCodeClassLoader.java:48)
>> at
java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
>> ... 10 more
>>
>> I've also tried with
>>
>> flinkConf.set(CoreOptions.CLASSLOADER_RESOLVE_ORDER,
"parent-first");
>>
>> but nothing changes.
>>
>> On Wed, Oct 28, 2020 at 10:34 AM Chesnay Schepler
<ches...@apache.org <mailto:ches...@apache.org>> wrote:
>>> hmm..it appears as if PackagedProgramUtils#createJobGraph
does some things outside the usercode classlodaer
(getPipelineFromProgram()), specifically the call to the main
method.
>>>
>>> @klou This seems like wrong behavior?
>>>
>>> @Flavio What you could try in the meantime is wrap the
call to createJobGraph like this:
>>>
>>> final ClassLoader contextClassLoader =
Thread.currentThread().getContextClassLoader();
>>> try {
>>>
Thread.currentThread().setContextClassLoader(packagedProgram.getUserCodeClassLoader());
>>> // do tstuff
>>> } finally {
>>>
Thread.currentThread().setContextClassLoader(contextClassLoader);
>>> }
>>>
>>>
>>> On 10/28/2020 10:12 AM, Flavio Pompermaier wrote:
>>>
>>> Any help here? How can I understand why the classes
inside the jar are not found when creating the PackagedProgram?
>>>
>>> On Tue, Oct 27, 2020 at 11:04 AM Flavio Pompermaier
<pomperma...@okkam.it <mailto:pomperma...@okkam.it>> wrote:
>>>> In the logs I see that the jar is the classpath (I'm
trying to debug the program from the IDE)..isn'it?
>>>>
>>>> Classpath: [file:/tmp/job-bundle.jar]
>>>> ...
>>>>
>>>> Best,
>>>> Flavio
>>>>
>>>> On Tue, Oct 27, 2020 at 10:39 AM Chesnay Schepler
<ches...@apache.org <mailto:ches...@apache.org>> wrote:
>>>>> * your JobExecutor is _not_ putting it on the classpath.
>>>>>
>>>>> On 10/27/2020 10:36 AM, Chesnay Schepler wrote:
>>>>>
>>>>> Well it happens on the client before you even hit the
RestClusterClient, so I assume that either your jar is not
packaged correctly or you your JobExecutor is putting it on
the classpath.
>>>>>
>>>>> On 10/27/2020 9:42 AM, Flavio Pompermaier wrote:
>>>>>
>>>>> Sure. Here it is
(org.apache.flink.client.cli.JobExecutor is my main class I'm
trying to use as a client towards the Flink cluster - session
mode).
>>>>> it/test/MyOb is within the fat jar (/tmp/job-bundle.jar).
>>>>>
>>>>> The code of getBatchEnv is:
>>>>>
>>>>> @Deprecated
>>>>> public static BatchEnv getBatchEnv() {
>>>>> // TODO use the following when ready to convert
from/to datastream
>>>>> // return
getTableEnv(EnvironmentSettings.newInstance().inBatchMode().build());
>>>>> ExecutionEnvironment env =
ExecutionEnvironment.getExecutionEnvironment();
>>>>> BatchTableEnvironment ret =
BatchTableEnvironment.create(env);
>>>>> customizeEnv(ret);
>>>>> return new BatchEnv(env, ret);
>>>>> }
>>>>>
>>>>> private static void customizeEnv(TableEnvironment ret) {
>>>>> final Configuration conf =
ret.getConfig().getConfiguration();
>>>>> //
conf.setInteger(ExecutionConfigOptions.TABLE_EXEC_RESOURCE_DEFAULT_PARALLELISM,
2);
>>>>> conf.setString(CoreOptions.TMP_DIRS, FLINK_TEST_TMP_DIR);
>>>>> conf.setString(BlobServerOptions.STORAGE_DIRECTORY,
FLINK_TEST_TMP_DIR);
>>>>> //
conf.setInteger(ConfigConstants.LOCAL_NUMBER_TASK_MANAGER,
4); //NOSONAR
>>>>> //
conf.setFloat(ConfigConstants.TASK_MANAGER_MEMORY_FRACTION_KEY,
0.4f);//NOSONAR
>>>>> //
conf.setLong(TaskManagerOptions.NETWORK_BUFFERS_MEMORY_MAX,
32768 * 2);//NOSONAR
>>>>> //
conf.setLong(TaskManagerOptions.TASK_CANCELLATION_TIMEOUT,
32768 * 2);// NOSONAR
>>>>>
conf.setLong(TaskManagerOptions.TASK_CANCELLATION_TIMEOUT,
0);// NOSONAR
>>>>> conf.setString(AkkaOptions.ASK_TIMEOUT, "10 min");//
NOSONAR
>>>>> conf.setString(AkkaOptions.TCP_TIMEOUT, "10 min");//
NOSONAR
>>>>> conf.setString(AkkaOptions.STARTUP_TIMEOUT, "10
min");// NOSONAR
>>>>> conf.set(ClientOptions.CLIENT_TIMEOUT,
Duration.ofMinutes(10));// NOSONAR
>>>>> final List<String> kryoSerializers = new
ArrayList<>();
>>>>>
kryoSerializers.add(getKryoSerializerConfigLine(DateTime.class,
JodaDateTimeSerializer.class));
>>>>>
kryoSerializers.add(getKryoSerializerConfigLine(EntitonAtom.class,
TBaseSerializer.class));
>>>>>
kryoSerializers.add(getKryoSerializerConfigLine(EntitonQuad.class,
TBaseSerializer.class));
>>>>> conf.set(PipelineOptions.KRYO_DEFAULT_SERIALIZERS,
kryoSerializers);
>>>>>
>>>>> }
>>>>>
>>>>> Classpath: [file:/tmp/job-bundle.jar]
>>>>>
>>>>> System.out: (none)
>>>>>
>>>>> System.err: (none)
>>>>> at
org.apache.flink.client.program.PackagedProgramUtils.generateException(PackagedProgramUtils.java:245)
>>>>> at
org.apache.flink.client.program.PackagedProgramUtils.getPipelineFromProgram(PackagedProgramUtils.java:164)
>>>>> at
org.apache.flink.client.program.PackagedProgramUtils.createJobGraph(PackagedProgramUtils.java:77)
>>>>> at
org.apache.flink.client.program.PackagedProgramUtils.createJobGraph(PackagedProgramUtils.java:109)
>>>>> at
org.apache.flink.client.cli.JobExecutor.main(JobExecutor.java:42)
>>>>> Caused by: java.lang.NoClassDefFoundError: it/test/MyOb
>>>>> at
it.okkam.datalinks.flink.DatalinksExecutionEnvironment.customizeEnv(DatalinksExecutionEnvironment.java:116)
>>>>> at
it.okkam.datalinks.flink.DatalinksExecutionEnvironment.getBatchEnv(DatalinksExecutionEnvironment.java:95)
>>>>> at it.okkam.datalinks.flink.jobs
<http://it.okkam.datalinks.flink.jobs>.EnsReconciliator.main(EnsReconciliator.java:73)
>>>>> at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native
Method)
>>>>> at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>>>>> at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>>>>> at
java.base/java.lang.reflect.Method.invoke(Method.java:566)
>>>>> at
org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:288)
>>>>> at
org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:198)
>>>>> at
org.apache.flink.client.program.PackagedProgramUtils.getPipelineFromProgram(PackagedProgramUtils.java:150)
>>>>> ... 3 more
>>>>> Caused by: java.lang.ClassNotFoundException: it/test/MyOb
>>>>> at java.base/java.net
<http://java.net>.URLClassLoader.findClass(URLClassLoader.java:471)
>>>>> at
java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:589)
>>>>> at
org.apache.flink.util.FlinkUserCodeClassLoader.loadClassWithoutExceptionHandling(FlinkUserCodeClassLoader.java:61)
>>>>> at
org.apache.flink.util.ChildFirstClassLoader.loadClassWithoutExceptionHandling(ChildFirstClassLoader.java:74)
>>>>> at
org.apache.flink.util.FlinkUserCodeClassLoader.loadClass(FlinkUserCodeClassLoader.java:48)
>>>>> at
java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
>>>>> ... 13 more
>>>>>
>>>>> On Tue, Oct 27, 2020 at 9:32 AM Robert Metzger
<rmetz...@apache.org <mailto:rmetz...@apache.org>> wrote:
>>>>>> Hi Flavio,
>>>>>> can you share the full stacktrace you are seeing? I'm
wondering if the error happens on the client or server side
(among other questions I have).
>>>>>>
>>>>>> On Mon, Oct 26, 2020 at 5:58 PM Flavio Pompermaier
<pomperma...@okkam.it <mailto:pomperma...@okkam.it>> wrote:
>>>>>>> Hi to all,
>>>>>>> I was trying to use the RestClusterClient to submit
my job to the Flink cluster.
>>>>>>> However when I submit the job Flink cannot find the
classes contained in the "fat" jar..what should I do? Am I
missing something in my code?
>>>>>>> This is the current client code I'm testing:
>>>>>>>
>>>>>>> public static void main(String[] args) throws
MalformedURLException {
>>>>>>> final Configuration flinkConf = new Configuration();
>>>>>>> flinkConf.set(RestOptions.ADDRESS, "localhost");
>>>>>>> flinkConf.set(RestOptions.PORT, 8081);
>>>>>>>
>>>>>>> final File jarFile = new
File("/tmp/job-bundle.jar");
>>>>>>> final String jobClass = "it.flink.MyJob";
>>>>>>>
>>>>>>> try {
>>>>>>> final RestClusterClient<StandaloneClusterId>
client =
>>>>>>> new RestClusterClient<>(flinkConf,
StandaloneClusterId.getInstance());
>>>>>>>
>>>>>>> final PackagedProgram packagedProgram =
PackagedProgram.newBuilder()//
>>>>>>> .setJarFile(jarFile)//
>>>>>>> // .setUserClassPaths(userClassPaths)
>>>>>>>
.setEntryPointClassName(jobClass).setConfiguration(flinkConf)//
>>>>>>> .build();
>>>>>>>
>>>>>>> final JobGraph jobGraph =
>>>>>>> PackagedProgramUtils.createJobGraph(packagedProgram,
flinkConf, 1, true);
>>>>>>>
>>>>>>> final DetachedJobExecutionResult
jobExecutionResult =
>>>>>>>
client.submitJob(jobGraph).thenApply(DetachedJobExecutionResult::new).get();
>>>>>>>
>>>>>>> System.out.println(jobExecutionResult.getJobID());
>>>>>>> } catch (Exception ex) {
>>>>>>> ex.printStackTrace();
>>>>>>> System.exit(1);
>>>>>>> }
>>>>>>> }
>>>>>>>
>>>>>>> Best,
>>>>>>> Flavio
>>>>>
>>>>>
