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https://issues.apache.org/jira/browse/FLINK-24601?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17432418#comment-17432418
]
Shyam edited comment on FLINK-24601 at 10/21/21, 12:05 PM:
------------------------------------------------------------
The environment setting is very simple.
I'm creating an environment like this
{code:java}
ExecutionEnvironment.createRemoteEnvironment("MY SERVER IP", 8081,
"build/libs/dataprocessor-0.0.1-SNAPSHOT.jar");{code}
The only repeated exception message which I see in the dashboard log is this :
{code:java}
2021-10-21 11:50:22,847 ERROR
org.apache.flink.runtime.rest.handler.job.JobSubmitHandler [] - Exception
occurred in REST handler: The jobGraphFileName field must not be omitted or be
null.{code}
The exception I see in the local is
{code:java}
2021-10-21 17:19:54.813 INFO 27712 --- [ent-IO-thread-1]
o.a.f.c.program.rest.RestClusterClient : Submitting job 'Flink Job'
(6c64a08f66c1bec6acc0651fbd732e8a).2021-10-21 17:19:54.813 INFO 27712 ---
[ent-IO-thread-1] o.a.f.c.program.rest.RestClusterClient : Submitting job
'Flink Job' (6c64a08f66c1bec6acc0651fbd732e8a).2021-10-21 17:20:00.294 WARN
27712 --- [-netty-thread-1] o.a.f.c.program.rest.RestClusterClient : Attempt
to submit job 'Flink Job' (6c64a08f66c1bec6acc0651fbd732e8a) to
'http://xx.xx.xx.xx:8081' has failed.
java.util.concurrent.CompletionException:
org.apache.flink.runtime.rest.ConnectionClosedException: Channel became
inactive. at
java.util.concurrent.CompletableFuture.encodeRelay(CompletableFuture.java:326)
[na:1.8.0_292] at
java.util.concurrent.CompletableFuture.completeRelay(CompletableFuture.java:338)
[na:1.8.0_292] at
java.util.concurrent.CompletableFuture.uniRelay(CompletableFuture.java:925)
[na:1.8.0_292] at
java.util.concurrent.CompletableFuture$UniRelay.tryFire(CompletableFuture.java:913)
~[na:1.8.0_292] at
java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
[na:1.8.0_292] at
java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1990)
[na:1.8.0_292] at
org.apache.flink.runtime.rest.RestClient$ClientHandler.channelInactive(RestClient.java:634)
~[flink-runtime-1.14.0.jar:1.14.0] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:262)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:248)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:241)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:81)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.handler.timeout.IdleStateHandler.channelInactive(IdleStateHandler.java:277)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:262)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:248)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:241)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.handler.stream.ChunkedWriteHandler.channelInactive(ChunkedWriteHandler.java:137)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:262)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:248)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:241)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:81)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.handler.codec.MessageAggregator.channelInactive(MessageAggregator.java:438)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:262)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:248)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:241)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelInactive(CombinedChannelDuplexHandler.java:418)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.handler.codec.ByteToMessageDecoder.channelInputClosed(ByteToMessageDecoder.java:389)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:354)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.handler.codec.http.HttpClientCodec$Decoder.channelInactive(HttpClientCodec.java:311)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.CombinedChannelDuplexHandler.channelInactive(CombinedChannelDuplexHandler.java:221)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:262)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:248)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:241)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline$HeadContext.channelInactive(DefaultChannelPipeline.java:1405)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:262)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:248)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.fireChannelInactive(DefaultChannelPipeline.java:901)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannel$AbstractUnsafe$8.run(AbstractChannel.java:831)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:497)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_292]Caused by:
org.apache.flink.runtime.rest.ConnectionClosedException: Channel became
inactive.{code}
Seems there is an issue at the rest cluster client which submits the job to the
server through REST. I'm calling this API
{color:#ffab00}{GET}"/v1/datasets"{color} which gives success JSON response
with code 200.
was (Author: sshyamprasath):
The environment setting is very simple.
I'm creating an environment like this
{code:java}
ExecutionEnvironment.createRemoteEnvironment("MY SERVER IP", 8081,
"build/libs/dataprocessor-0.0.1-SNAPSHOT.jar");{code}
The only repeated exception message which I see in the dashboard log is this :
{code:java}
2021-10-21 11:50:22,847 ERROR
org.apache.flink.runtime.rest.handler.job.JobSubmitHandler [] - Exception
occurred in REST handler: The jobGraphFileName field must not be omitted or be
null.{code}
The exception I see in the local is
{code:java}
2021-10-21 17:19:54.813 INFO 27712 --- [ent-IO-thread-1]
o.a.f.c.program.rest.RestClusterClient : Submitting job 'Flink Streaming Job'
(6c64a08f66c1bec6acc0651fbd732e8a).2021-10-21 17:19:54.813 INFO 27712 ---
[ent-IO-thread-1] o.a.f.c.program.rest.RestClusterClient : Submitting job
'Flink Streaming Job' (6c64a08f66c1bec6acc0651fbd732e8a).2021-10-21
17:20:00.294 WARN 27712 --- [-netty-thread-1]
o.a.f.c.program.rest.RestClusterClient : Attempt to submit job 'Flink
Streaming Job' (6c64a08f66c1bec6acc0651fbd732e8a) to 'http://xx.xx.xx.xx:8081'
has failed.
java.util.concurrent.CompletionException:
org.apache.flink.runtime.rest.ConnectionClosedException: Channel became
inactive. at
java.util.concurrent.CompletableFuture.encodeRelay(CompletableFuture.java:326)
[na:1.8.0_292] at
java.util.concurrent.CompletableFuture.completeRelay(CompletableFuture.java:338)
[na:1.8.0_292] at
java.util.concurrent.CompletableFuture.uniRelay(CompletableFuture.java:925)
[na:1.8.0_292] at
java.util.concurrent.CompletableFuture$UniRelay.tryFire(CompletableFuture.java:913)
~[na:1.8.0_292] at
java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
[na:1.8.0_292] at
java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1990)
[na:1.8.0_292] at
org.apache.flink.runtime.rest.RestClient$ClientHandler.channelInactive(RestClient.java:634)
~[flink-runtime-1.14.0.jar:1.14.0] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:262)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:248)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:241)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:81)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.handler.timeout.IdleStateHandler.channelInactive(IdleStateHandler.java:277)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:262)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:248)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:241)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.handler.stream.ChunkedWriteHandler.channelInactive(ChunkedWriteHandler.java:137)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:262)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:248)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:241)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:81)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.handler.codec.MessageAggregator.channelInactive(MessageAggregator.java:438)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:262)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:248)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:241)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelInactive(CombinedChannelDuplexHandler.java:418)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.handler.codec.ByteToMessageDecoder.channelInputClosed(ByteToMessageDecoder.java:389)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:354)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.handler.codec.http.HttpClientCodec$Decoder.channelInactive(HttpClientCodec.java:311)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.CombinedChannelDuplexHandler.channelInactive(CombinedChannelDuplexHandler.java:221)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:262)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:248)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:241)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline$HeadContext.channelInactive(DefaultChannelPipeline.java:1405)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:262)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:248)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.fireChannelInactive(DefaultChannelPipeline.java:901)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannel$AbstractUnsafe$8.run(AbstractChannel.java:831)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:497)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
org.apache.flink.shaded.netty4.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
~[flink-shaded-netty-4.1.65.Final-14.0.jar:na] at
java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_292]Caused by:
org.apache.flink.runtime.rest.ConnectionClosedException: Channel became
inactive.{code}
Seems there is an issue at the rest cluster client which submits the job to the
server through REST. I'm calling this API
{color:#ffab00}{GET}"/v1/datasets"{color} which gives success JSON response
with code 200.
> Error in submitting the job
> ---------------------------
>
> Key: FLINK-24601
> URL: https://issues.apache.org/jira/browse/FLINK-24601
> Project: Flink
> Issue Type: Bug
> Reporter: Shyam
> Priority: Major
>
> I am new to Flink. I have done Flink 1.14.0 standalone installation in AWS
> server and written a simple job in java 1.8. I am new to Flink. I have done
> Flink 1.14.0 standalone installation in AWS server and written a simple job
> in java 1.8.
>
> {code:java}
> DataSet<String> set = executionEnvironment.fromCollection(text);
> DataSet<String> upperCase = set.map(s -> s.toUpperCase());
> upperCase.count();
> executionEnvironment.execute("sample job");
> {code}
>
> When I run the code, I get the following error in Flink runtime
>
> {code:java}
> 2021-10-19 16:00:51.398 WARN 14358 — [-netty-thread-1]
> o.a.f.c.program.rest.RestClusterClient : Attempt to submit job 'Flink Java
> Job at Tue Oct 19 16:00:38 IST 2021' (f38d6a987100a98662e10ada551d05b9) to
> 'http://xx.xx.xx.xx:8081' has failed.
> java.util.concurrent.CompletionException:
> org.apache.flink.runtime.rest.ConnectionClosedException: Channel became
> inactive. at
> java.util.concurrent.CompletableFuture.encodeRelay(CompletableFuture.java:326)
> [na:1.8.0_292] at
> java.util.concurrent.CompletableFuture.completeRelay(CompletableFuture.java:338)
> [na:1.8.0_292] at
> java.util.concurrent.CompletableFuture.uniRelay(CompletableFuture.java:925)
> [na:1.8.0_292] at
> java.util.concurrent.CompletableFuture$UniRelay.tryFire(CompletableFuture.java:913)
> ~[na:1.8.0_292] at
> java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
> [na:1.8.0_292] at
> java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1990)
> [na:1.8.0_292] at
> org.apache.flink.runtime.rest.RestClient$ClientHandler.channelInactive(RestClient.java:634)
> ~[flink-runtime-1.14.0.jar:1.14.0]{code}
>
>
> My job is retrying to submit the job for the multiple times and finally
> stopped with another message
> {code:java}
> org.apache.flink.runtime.rest.util.RestClientException:
> [org.apache.flink.runtime.rest.handler.RestHandlerException: The
> jobGraphFileName field must not be omitted or be null. at
> org.apache.flink.runtime.rest.handler.job.JobSubmitHandler.handleRequest(JobSubmitHandler.java:105){code}
> Note: I checked the Flink and java version in my app and server. Everything
> is the same (Flink 1.4.0 & java 1.8)
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