Fwd: [GitHub] incubator-zeppelin pull request: ZEPPELIN-44 Interpreter for Apach...

[Fabian Hueske-2]

Hi Flink folks,

the Flink interpreter PR for Apache Zeppelin is blocked by a failing test
case (see below).
Does anybody have an idea what is going on and can maybe help to resolve
the problem?

Thanks, Fabian

---------- Forwarded message ----------
From: Leemoonsoo <[hidden email]>
Date: 2015-05-21 6:35 GMT+02:00
Subject: [GitHub] incubator-zeppelin pull request: ZEPPELIN-44 Interpreter
for Apach...
To: [hidden email]


Github user Leemoonsoo commented on the pull request:


https://github.com/apache/incubator-zeppelin/pull/75#issuecomment-104132384

    This PR has some test using FlinkMiniCluster.
    Tests are fine when i run them on my IDE.
    But if i run them using maven, it fails. (CI is failing, too)

    I think everything is ready, except for this test failure. Any advice
is very appreciated.
    here's failure message

    ```
    -------------------------------------------------------
     T E S T S
    -------------------------------------------------------
    Running org.apache.zeppelin.flink.FlinkInterpreterTest
    SLF4J: Class path contains multiple SLF4J bindings.
    SLF4J: Found binding in
[jar:file:/home/travis/.m2/repository/org/slf4j/slf4j-log4j12/1.7.10/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
    SLF4J: Found binding in
[jar:file:/home/travis/build/apache/incubator-zeppelin/zeppelin-interpreter/target/lib/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
    SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an
explanation.
    SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
    Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 106.131
sec <<< FAILURE! - in org.apache.zeppelin.flink.FlinkInterpreterTest
    org.apache.zeppelin.flink.FlinkInterpreterTest  Time elapsed: 106.131
sec  <<< ERROR!
    java.util.concurrent.TimeoutException: Futures timed out after [100000
milliseconds]
        at
scala.concurrent.impl.Promise$DefaultPromise.ready(Promise.scala:219)
        at
scala.concurrent.impl.Promise$DefaultPromise.result(Promise.scala:223)
        at scala.concurrent.Await$$anonfun$result$1.apply(package.scala:107)
        at
scala.concurrent.BlockContext$DefaultBlockContext$.blockOn(BlockContext.scala:53)
        at scala.concurrent.Await$.result(package.scala:107)
        at akka.remote.Remoting.start(Remoting.scala:180)
        at
akka.remote.RemoteActorRefProvider.init(RemoteActorRefProvider.scala:184)
        at akka.actor.ActorSystemImpl.liftedTree2$1(ActorSystem.scala:619)
        at
akka.actor.ActorSystemImpl._start$lzycompute(ActorSystem.scala:616)
        at akka.actor.ActorSystemImpl._start(ActorSystem.scala:616)
        at akka.actor.ActorSystemImpl.start(ActorSystem.scala:633)
        at akka.actor.ActorSystem$.apply(ActorSystem.scala:142)
        at akka.actor.ActorSystem$.apply(ActorSystem.scala:119)
        at akka.actor.ActorSystem$.create(ActorSystem.scala:67)
        at
org.apache.flink.runtime.akka.AkkaUtils$.createActorSystem(AkkaUtils.scala:82)
        at
org.apache.flink.runtime.minicluster.FlinkMiniCluster.startJobManagerActorSystem(FlinkMiniCluster.scala:105)
        at
org.apache.flink.runtime.minicluster.FlinkMiniCluster.<init>(FlinkMiniCluster.scala:61)
        at
org.apache.flink.runtime.minicluster.LocalFlinkMiniCluster.<init>(LocalFlinkMiniCluster.scala:44)
        at
org.apache.zeppelin.flink.FlinkInterpreter.startFlinkMiniCluster(FlinkInterpreter.java:297)
        at
org.apache.zeppelin.flink.FlinkInterpreter.initializeFlinkEnv(FlinkInterpreter.java:152)
        at
org.apache.zeppelin.flink.FlinkInterpreter.open(FlinkInterpreter.java:115)
        at
org.apache.zeppelin.flink.FlinkInterpreterTest.setUp(FlinkInterpreterTest.java:40)


    Results :

    Tests in error:
      FlinkInterpreterTest.setUp:40 » Timeout Futures timed out after
[100000 millis...
    ```


---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [hidden email] or file a JIRA ticket
with INFRA.
---

[Till Rohrmann]

I'll try to reproduce this problem locally on my machine.

On Thu, May 21, 2015 at 11:25 AM, Fabian Hueske <[hidden email]> wrote:

> Hi Flink folks,
>
> the Flink interpreter PR for Apache Zeppelin is blocked by a failing test
> case (see below).
> Does anybody have an idea what is going on and can maybe help to resolve
> the problem?
>
> Thanks, Fabian
>
> ---------- Forwarded message ----------
> From: Leemoonsoo <[hidden email]>
> Date: 2015-05-21 6:35 GMT+02:00
> Subject: [GitHub] incubator-zeppelin pull request: ZEPPELIN-44 Interpreter
> for Apach...
> To: [hidden email]
>
>
> Github user Leemoonsoo commented on the pull request:
>
>
> https://github.com/apache/incubator-zeppelin/pull/75#issuecomment-104132384
>
>     This PR has some test using FlinkMiniCluster.
>     Tests are fine when i run them on my IDE.
>     But if i run them using maven, it fails. (CI is failing, too)
>
>     I think everything is ready, except for this test failure. Any advice
> is very appreciated.
>     here's failure message
>
>     ```
>     -------------------------------------------------------
>      T E S T S
>     -------------------------------------------------------
>     Running org.apache.zeppelin.flink.FlinkInterpreterTest
>     SLF4J: Class path contains multiple SLF4J bindings.
>     SLF4J: Found binding in
>
> [jar:file:/home/travis/.m2/repository/org/slf4j/slf4j-log4j12/1.7.10/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
>     SLF4J: Found binding in
>
> [jar:file:/home/travis/build/apache/incubator-zeppelin/zeppelin-interpreter/target/lib/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
>     SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an
> explanation.
>     SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
>     Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 106.131
> sec <<< FAILURE! - in org.apache.zeppelin.flink.FlinkInterpreterTest
>     org.apache.zeppelin.flink.FlinkInterpreterTest  Time elapsed: 106.131
> sec  <<< ERROR!
>     java.util.concurrent.TimeoutException: Futures timed out after [100000
> milliseconds]
>         at
> scala.concurrent.impl.Promise$DefaultPromise.ready(Promise.scala:219)
>         at
> scala.concurrent.impl.Promise$DefaultPromise.result(Promise.scala:223)
>         at
> scala.concurrent.Await$$anonfun$result$1.apply(package.scala:107)
>         at
>
> scala.concurrent.BlockContext$DefaultBlockContext$.blockOn(BlockContext.scala:53)
>         at scala.concurrent.Await$.result(package.scala:107)
>         at akka.remote.Remoting.start(Remoting.scala:180)
>         at
> akka.remote.RemoteActorRefProvider.init(RemoteActorRefProvider.scala:184)
>         at akka.actor.ActorSystemImpl.liftedTree2$1(ActorSystem.scala:619)
>         at
> akka.actor.ActorSystemImpl._start$lzycompute(ActorSystem.scala:616)
>         at akka.actor.ActorSystemImpl._start(ActorSystem.scala:616)
>         at akka.actor.ActorSystemImpl.start(ActorSystem.scala:633)
>         at akka.actor.ActorSystem$.apply(ActorSystem.scala:142)
>         at akka.actor.ActorSystem$.apply(ActorSystem.scala:119)
>         at akka.actor.ActorSystem$.create(ActorSystem.scala:67)
>         at
>
> org.apache.flink.runtime.akka.AkkaUtils$.createActorSystem(AkkaUtils.scala:82)
>         at
>
> org.apache.flink.runtime.minicluster.FlinkMiniCluster.startJobManagerActorSystem(FlinkMiniCluster.scala:105)
>         at
>
> org.apache.flink.runtime.minicluster.FlinkMiniCluster.<init>(FlinkMiniCluster.scala:61)
>         at
>
> org.apache.flink.runtime.minicluster.LocalFlinkMiniCluster.<init>(LocalFlinkMiniCluster.scala:44)
>         at
>
> org.apache.zeppelin.flink.FlinkInterpreter.startFlinkMiniCluster(FlinkInterpreter.java:297)
>         at
>
> org.apache.zeppelin.flink.FlinkInterpreter.initializeFlinkEnv(FlinkInterpreter.java:152)
>         at
> org.apache.zeppelin.flink.FlinkInterpreter.open(FlinkInterpreter.java:115)
>         at
>
> org.apache.zeppelin.flink.FlinkInterpreterTest.setUp(FlinkInterpreterTest.java:40)
>
>
>     Results :
>
>     Tests in error:
>       FlinkInterpreterTest.setUp:40 » Timeout Futures timed out after
> [100000 millis...
>     ```
>
>
> ---
> If your project is set up for it, you can reply to this email and have your
> reply appear on GitHub as well. If your project does not have this feature
> enabled and wishes so, or if the feature is enabled but not working, please
> contact infrastructure at [hidden email] or file a JIRA ticket
> with INFRA.
> ---
>

[Stephan Ewen]

The actor system fails to start. Here are the suspicious log lines:

    SLF4J: Class path contains multiple SLF4J bindings.
    SLF4J: Found binding in [jar:file:/home/travis/.m2/
repository/org/slf4j/slf4j-log4j12/1.7.10/slf4j-log4j12-
1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
    SLF4J: Found binding in [jar:file:/home/travis/build/
apache/incubator-zeppelin/zeppelin-interpreter/target/
lib/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
    SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an
explanation.
    SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]


Seems that SLF4J has more than one binding. I remember that Akka crashed
because of that before.

As a simple fix, can you try and exclude the SLF4J jar from your build
somehow? Or set it to "provided" in the Flink POM?





On Thu, May 21, 2015 at 11:49 AM, Till Rohrmann <[hidden email]>
wrote:

> I'll try to reproduce this problem locally on my machine.
>
> On Thu, May 21, 2015 at 11:25 AM, Fabian Hueske <[hidden email]> wrote:
>
> > Hi Flink folks,
> >
> > the Flink interpreter PR for Apache Zeppelin is blocked by a failing test
> > case (see below).
> > Does anybody have an idea what is going on and can maybe help to resolve
> > the problem?
> >
> > Thanks, Fabian
> >
> > ---------- Forwarded message ----------
> > From: Leemoonsoo <[hidden email]>
> > Date: 2015-05-21 6:35 GMT+02:00
> > Subject: [GitHub] incubator-zeppelin pull request: ZEPPELIN-44
> Interpreter
> > for Apach...
> > To: [hidden email]
> >
> >
> > Github user Leemoonsoo commented on the pull request:
> >
> >
> >
> https://github.com/apache/incubator-zeppelin/pull/75#issuecomment-104132384
> >
> >     This PR has some test using FlinkMiniCluster.
> >     Tests are fine when i run them on my IDE.
> >     But if i run them using maven, it fails. (CI is failing, too)
> >
> >     I think everything is ready, except for this test failure. Any advice
> > is very appreciated.
> >     here's failure message
> >
> >     ```
> >     -------------------------------------------------------
> >      T E S T S
> >     -------------------------------------------------------
> >     Running org.apache.zeppelin.flink.FlinkInterpreterTest
> >     SLF4J: Class path contains multiple SLF4J bindings.
> >     SLF4J: Found binding in
> >
> >
> [jar:file:/home/travis/.m2/repository/org/slf4j/slf4j-log4j12/1.7.10/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
> >     SLF4J: Found binding in
> >
> >
> [jar:file:/home/travis/build/apache/incubator-zeppelin/zeppelin-interpreter/target/lib/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
> >     SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an
> > explanation.
> >     SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
> >     Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed:
> 106.131
> > sec <<< FAILURE! - in org.apache.zeppelin.flink.FlinkInterpreterTest
> >     org.apache.zeppelin.flink.FlinkInterpreterTest  Time elapsed: 106.131
> > sec  <<< ERROR!
> >     java.util.concurrent.TimeoutException: Futures timed out after
> [100000
> > milliseconds]
> >         at
> > scala.concurrent.impl.Promise$DefaultPromise.ready(Promise.scala:219)
> >         at
> > scala.concurrent.impl.Promise$DefaultPromise.result(Promise.scala:223)
> >         at
> > scala.concurrent.Await$$anonfun$result$1.apply(package.scala:107)
> >         at
> >
> >
> scala.concurrent.BlockContext$DefaultBlockContext$.blockOn(BlockContext.scala:53)
> >         at scala.concurrent.Await$.result(package.scala:107)
> >         at akka.remote.Remoting.start(Remoting.scala:180)
> >         at
> > akka.remote.RemoteActorRefProvider.init(RemoteActorRefProvider.scala:184)
> >         at
> akka.actor.ActorSystemImpl.liftedTree2$1(ActorSystem.scala:619)
> >         at
> > akka.actor.ActorSystemImpl._start$lzycompute(ActorSystem.scala:616)
> >         at akka.actor.ActorSystemImpl._start(ActorSystem.scala:616)
> >         at akka.actor.ActorSystemImpl.start(ActorSystem.scala:633)
> >         at akka.actor.ActorSystem$.apply(ActorSystem.scala:142)
> >         at akka.actor.ActorSystem$.apply(ActorSystem.scala:119)
> >         at akka.actor.ActorSystem$.create(ActorSystem.scala:67)
> >         at
> >
> >
> org.apache.flink.runtime.akka.AkkaUtils$.createActorSystem(AkkaUtils.scala:82)
> >         at
> >
> >
> org.apache.flink.runtime.minicluster.FlinkMiniCluster.startJobManagerActorSystem(FlinkMiniCluster.scala:105)
> >         at
> >
> >
> org.apache.flink.runtime.minicluster.FlinkMiniCluster.<init>(FlinkMiniCluster.scala:61)
> >         at
> >
> >
> org.apache.flink.runtime.minicluster.LocalFlinkMiniCluster.<init>(LocalFlinkMiniCluster.scala:44)
> >         at
> >
> >
> org.apache.zeppelin.flink.FlinkInterpreter.startFlinkMiniCluster(FlinkInterpreter.java:297)
> >         at
> >
> >
> org.apache.zeppelin.flink.FlinkInterpreter.initializeFlinkEnv(FlinkInterpreter.java:152)
> >         at
> >
> org.apache.zeppelin.flink.FlinkInterpreter.open(FlinkInterpreter.java:115)
> >         at
> >
> >
> org.apache.zeppelin.flink.FlinkInterpreterTest.setUp(FlinkInterpreterTest.java:40)
> >
> >
> >     Results :
> >
> >     Tests in error:
> >       FlinkInterpreterTest.setUp:40 » Timeout Futures timed out after
> > [100000 millis...
> >     ```
> >
> >
> > ---
> > If your project is set up for it, you can reply to this email and have
> your
> > reply appear on GitHub as well. If your project does not have this
> feature
> > enabled and wishes so, or if the feature is enabled but not working,
> please
> > contact infrastructure at [hidden email] or file a JIRA
> ticket
> > with INFRA.
> > ---
> >
>

[Till Rohrmann]

Hmm that is interesting. I always thought that in the case of multiple
SLF4J bindings, slf4j will simply pick one of them (first, last, random).

On Thu, May 21, 2015 at 12:34 PM, Stephan Ewen <[hidden email]> wrote:

> The actor system fails to start. Here are the suspicious log lines:
>
>     SLF4J: Class path contains multiple SLF4J bindings.
>     SLF4J: Found binding in [jar:file:/home/travis/.m2/
> repository/org/slf4j/slf4j-log4j12/1.7.10/slf4j-log4j12-
> 1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
>     SLF4J: Found binding in [jar:file:/home/travis/build/
> apache/incubator-zeppelin/zeppelin-interpreter/target/
> lib/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
>     SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an
> explanation.
>     SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
>
>
> Seems that SLF4J has more than one binding. I remember that Akka crashed
> because of that before.
>
> As a simple fix, can you try and exclude the SLF4J jar from your build
> somehow? Or set it to "provided" in the Flink POM?
>
>
>
>
>
> On Thu, May 21, 2015 at 11:49 AM, Till Rohrmann <[hidden email]>
> wrote:
>
> > I'll try to reproduce this problem locally on my machine.
> >
> > On Thu, May 21, 2015 at 11:25 AM, Fabian Hueske <[hidden email]>
> wrote:
> >
> > > Hi Flink folks,
> > >
> > > the Flink interpreter PR for Apache Zeppelin is blocked by a failing
> test
> > > case (see below).
> > > Does anybody have an idea what is going on and can maybe help to
> resolve
> > > the problem?
> > >
> > > Thanks, Fabian
> > >
> > > ---------- Forwarded message ----------
> > > From: Leemoonsoo <[hidden email]>
> > > Date: 2015-05-21 6:35 GMT+02:00
> > > Subject: [GitHub] incubator-zeppelin pull request: ZEPPELIN-44
> > Interpreter
> > > for Apach...
> > > To: [hidden email]
> > >
> > >
> > > Github user Leemoonsoo commented on the pull request:
> > >
> > >
> > >
> >
> https://github.com/apache/incubator-zeppelin/pull/75#issuecomment-104132384
> > >
> > >     This PR has some test using FlinkMiniCluster.
> > >     Tests are fine when i run them on my IDE.
> > >     But if i run them using maven, it fails. (CI is failing, too)
> > >
> > >     I think everything is ready, except for this test failure. Any
> advice
> > > is very appreciated.
> > >     here's failure message
> > >
> > >     ```
> > >     -------------------------------------------------------
> > >      T E S T S
> > >     -------------------------------------------------------
> > >     Running org.apache.zeppelin.flink.FlinkInterpreterTest
> > >     SLF4J: Class path contains multiple SLF4J bindings.
> > >     SLF4J: Found binding in
> > >
> > >
> >
> [jar:file:/home/travis/.m2/repository/org/slf4j/slf4j-log4j12/1.7.10/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
> > >     SLF4J: Found binding in
> > >
> > >
> >
> [jar:file:/home/travis/build/apache/incubator-zeppelin/zeppelin-interpreter/target/lib/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
> > >     SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for
> an
> > > explanation.
> > >     SLF4J: Actual binding is of type
> [org.slf4j.impl.Log4jLoggerFactory]
> > >     Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed:
> > 106.131
> > > sec <<< FAILURE! - in org.apache.zeppelin.flink.FlinkInterpreterTest
> > >     org.apache.zeppelin.flink.FlinkInterpreterTest  Time elapsed:
> 106.131
> > > sec  <<< ERROR!
> > >     java.util.concurrent.TimeoutException: Futures timed out after
> > [100000
> > > milliseconds]
> > >         at
> > > scala.concurrent.impl.Promise$DefaultPromise.ready(Promise.scala:219)
> > >         at
> > > scala.concurrent.impl.Promise$DefaultPromise.result(Promise.scala:223)
> > >         at
> > > scala.concurrent.Await$$anonfun$result$1.apply(package.scala:107)
> > >         at
> > >
> > >
> >
> scala.concurrent.BlockContext$DefaultBlockContext$.blockOn(BlockContext.scala:53)
> > >         at scala.concurrent.Await$.result(package.scala:107)
> > >         at akka.remote.Remoting.start(Remoting.scala:180)
> > >         at
> > >
> akka.remote.RemoteActorRefProvider.init(RemoteActorRefProvider.scala:184)
> > >         at
> > akka.actor.ActorSystemImpl.liftedTree2$1(ActorSystem.scala:619)
> > >         at
> > > akka.actor.ActorSystemImpl._start$lzycompute(ActorSystem.scala:616)
> > >         at akka.actor.ActorSystemImpl._start(ActorSystem.scala:616)
> > >         at akka.actor.ActorSystemImpl.start(ActorSystem.scala:633)
> > >         at akka.actor.ActorSystem$.apply(ActorSystem.scala:142)
> > >         at akka.actor.ActorSystem$.apply(ActorSystem.scala:119)
> > >         at akka.actor.ActorSystem$.create(ActorSystem.scala:67)
> > >         at
> > >
> > >
> >
> org.apache.flink.runtime.akka.AkkaUtils$.createActorSystem(AkkaUtils.scala:82)
> > >         at
> > >
> > >
> >
> org.apache.flink.runtime.minicluster.FlinkMiniCluster.startJobManagerActorSystem(FlinkMiniCluster.scala:105)
> > >         at
> > >
> > >
> >
> org.apache.flink.runtime.minicluster.FlinkMiniCluster.<init>(FlinkMiniCluster.scala:61)
> > >         at
> > >
> > >
> >
> org.apache.flink.runtime.minicluster.LocalFlinkMiniCluster.<init>(LocalFlinkMiniCluster.scala:44)
> > >         at
> > >
> > >
> >
> org.apache.zeppelin.flink.FlinkInterpreter.startFlinkMiniCluster(FlinkInterpreter.java:297)
> > >         at
> > >
> > >
> >
> org.apache.zeppelin.flink.FlinkInterpreter.initializeFlinkEnv(FlinkInterpreter.java:152)
> > >         at
> > >
> >
> org.apache.zeppelin.flink.FlinkInterpreter.open(FlinkInterpreter.java:115)
> > >         at
> > >
> > >
> >
> org.apache.zeppelin.flink.FlinkInterpreterTest.setUp(FlinkInterpreterTest.java:40)
> > >
> > >
> > >     Results :
> > >
> > >     Tests in error:
> > >       FlinkInterpreterTest.setUp:40 » Timeout Futures timed out after
> > > [100000 millis...
> > >     ```
> > >
> > >
> > > ---
> > > If your project is set up for it, you can reply to this email and have
> > your
> > > reply appear on GitHub as well. If your project does not have this
> > feature
> > > enabled and wishes so, or if the feature is enabled but not working,
> > please
> > > contact infrastructure at [hidden email] or file a JIRA
> > ticket
> > > with INFRA.
> > > ---
> > >
> >
>

[Stephan Ewen]

True, may still have another issue.

On Thu, May 21, 2015 at 1:45 PM, Till Rohrmann <[hidden email]> wrote:

> Hmm that is interesting. I always thought that in the case of multiple
> SLF4J bindings, slf4j will simply pick one of them (first, last, random).
>
> On Thu, May 21, 2015 at 12:34 PM, Stephan Ewen <[hidden email]> wrote:
>
> > The actor system fails to start. Here are the suspicious log lines:
> >
> >     SLF4J: Class path contains multiple SLF4J bindings.
> >     SLF4J: Found binding in [jar:file:/home/travis/.m2/
> > repository/org/slf4j/slf4j-log4j12/1.7.10/slf4j-log4j12-
> > 1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
> >     SLF4J: Found binding in [jar:file:/home/travis/build/
> > apache/incubator-zeppelin/zeppelin-interpreter/target/
> > lib/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
> >     SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an
> > explanation.
> >     SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
> >
> >
> > Seems that SLF4J has more than one binding. I remember that Akka crashed
> > because of that before.
> >
> > As a simple fix, can you try and exclude the SLF4J jar from your build
> > somehow? Or set it to "provided" in the Flink POM?
> >
> >
> >
> >
> >
> > On Thu, May 21, 2015 at 11:49 AM, Till Rohrmann <[hidden email]>
> > wrote:
> >
> > > I'll try to reproduce this problem locally on my machine.
> > >
> > > On Thu, May 21, 2015 at 11:25 AM, Fabian Hueske <[hidden email]>
> > wrote:
> > >
> > > > Hi Flink folks,
> > > >
> > > > the Flink interpreter PR for Apache Zeppelin is blocked by a failing
> > test
> > > > case (see below).
> > > > Does anybody have an idea what is going on and can maybe help to
> > resolve
> > > > the problem?
> > > >
> > > > Thanks, Fabian
> > > >
> > > > ---------- Forwarded message ----------
> > > > From: Leemoonsoo <[hidden email]>
> > > > Date: 2015-05-21 6:35 GMT+02:00
> > > > Subject: [GitHub] incubator-zeppelin pull request: ZEPPELIN-44
> > > Interpreter
> > > > for Apach...
> > > > To: [hidden email]
> > > >
> > > >
> > > > Github user Leemoonsoo commented on the pull request:
> > > >
> > > >
> > > >
> > >
> >
> https://github.com/apache/incubator-zeppelin/pull/75#issuecomment-104132384
> > > >
> > > >     This PR has some test using FlinkMiniCluster.
> > > >     Tests are fine when i run them on my IDE.
> > > >     But if i run them using maven, it fails. (CI is failing, too)
> > > >
> > > >     I think everything is ready, except for this test failure. Any
> > advice
> > > > is very appreciated.
> > > >     here's failure message
> > > >
> > > >     ```
> > > >     -------------------------------------------------------
> > > >      T E S T S
> > > >     -------------------------------------------------------
> > > >     Running org.apache.zeppelin.flink.FlinkInterpreterTest
> > > >     SLF4J: Class path contains multiple SLF4J bindings.
> > > >     SLF4J: Found binding in
> > > >
> > > >
> > >
> >
> [jar:file:/home/travis/.m2/repository/org/slf4j/slf4j-log4j12/1.7.10/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
> > > >     SLF4J: Found binding in
> > > >
> > > >
> > >
> >
> [jar:file:/home/travis/build/apache/incubator-zeppelin/zeppelin-interpreter/target/lib/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
> > > >     SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for
> > an
> > > > explanation.
> > > >     SLF4J: Actual binding is of type
> > [org.slf4j.impl.Log4jLoggerFactory]
> > > >     Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed:
> > > 106.131
> > > > sec <<< FAILURE! - in org.apache.zeppelin.flink.FlinkInterpreterTest
> > > >     org.apache.zeppelin.flink.FlinkInterpreterTest  Time elapsed:
> > 106.131
> > > > sec  <<< ERROR!
> > > >     java.util.concurrent.TimeoutException: Futures timed out after
> > > [100000
> > > > milliseconds]
> > > >         at
> > > > scala.concurrent.impl.Promise$DefaultPromise.ready(Promise.scala:219)
> > > >         at
> > > >
> scala.concurrent.impl.Promise$DefaultPromise.result(Promise.scala:223)
> > > >         at
> > > > scala.concurrent.Await$$anonfun$result$1.apply(package.scala:107)
> > > >         at
> > > >
> > > >
> > >
> >
> scala.concurrent.BlockContext$DefaultBlockContext$.blockOn(BlockContext.scala:53)
> > > >         at scala.concurrent.Await$.result(package.scala:107)
> > > >         at akka.remote.Remoting.start(Remoting.scala:180)
> > > >         at
> > > >
> > akka.remote.RemoteActorRefProvider.init(RemoteActorRefProvider.scala:184)
> > > >         at
> > > akka.actor.ActorSystemImpl.liftedTree2$1(ActorSystem.scala:619)
> > > >         at
> > > > akka.actor.ActorSystemImpl._start$lzycompute(ActorSystem.scala:616)
> > > >         at akka.actor.ActorSystemImpl._start(ActorSystem.scala:616)
> > > >         at akka.actor.ActorSystemImpl.start(ActorSystem.scala:633)
> > > >         at akka.actor.ActorSystem$.apply(ActorSystem.scala:142)
> > > >         at akka.actor.ActorSystem$.apply(ActorSystem.scala:119)
> > > >         at akka.actor.ActorSystem$.create(ActorSystem.scala:67)
> > > >         at
> > > >
> > > >
> > >
> >
> org.apache.flink.runtime.akka.AkkaUtils$.createActorSystem(AkkaUtils.scala:82)
> > > >         at
> > > >
> > > >
> > >
> >
> org.apache.flink.runtime.minicluster.FlinkMiniCluster.startJobManagerActorSystem(FlinkMiniCluster.scala:105)
> > > >         at
> > > >
> > > >
> > >
> >
> org.apache.flink.runtime.minicluster.FlinkMiniCluster.<init>(FlinkMiniCluster.scala:61)
> > > >         at
> > > >
> > > >
> > >
> >
> org.apache.flink.runtime.minicluster.LocalFlinkMiniCluster.<init>(LocalFlinkMiniCluster.scala:44)
> > > >         at
> > > >
> > > >
> > >
> >
> org.apache.zeppelin.flink.FlinkInterpreter.startFlinkMiniCluster(FlinkInterpreter.java:297)
> > > >         at
> > > >
> > > >
> > >
> >
> org.apache.zeppelin.flink.FlinkInterpreter.initializeFlinkEnv(FlinkInterpreter.java:152)
> > > >         at
> > > >
> > >
> >
> org.apache.zeppelin.flink.FlinkInterpreter.open(FlinkInterpreter.java:115)
> > > >         at
> > > >
> > > >
> > >
> >
> org.apache.zeppelin.flink.FlinkInterpreterTest.setUp(FlinkInterpreterTest.java:40)
> > > >
> > > >
> > > >     Results :
> > > >
> > > >     Tests in error:
> > > >       FlinkInterpreterTest.setUp:40 » Timeout Futures timed out
> after
> > > > [100000 millis...
> > > >     ```
> > > >
> > > >
> > > > ---
> > > > If your project is set up for it, you can reply to this email and
> have
> > > your
> > > > reply appear on GitHub as well. If your project does not have this
> > > feature
> > > > enabled and wishes so, or if the feature is enabled but not working,
> > > please
> > > > contact infrastructure at [hidden email] or file a JIRA
> > > ticket
> > > > with INFRA.
> > > > ---
> > > >
> > >
> >
>