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From "Tzu-Li (Gordon) Tai" <tzuli...@apache.org>
Subject Re: Flink errors out and job fails--IOException from CollectSink.open()
Date Mon, 17 Apr 2017 05:09:22 GMT
Hi,

The NPE should definitely be fixed. Here’s the filed JIRA for it: https://issues.apache.org/jira/browse/FLINK-6311.

@Sathi: When building Flink we suggest to avoid 3.3.x+ as you have experienced yourself, it
is subject to incorrect shading of some of the dependencies.

Cheers,
Gordon


On 16 April 2017 at 6:10:18 PM, Ted Yu (yuzhihong@gmail.com) wrote:

Can you describe the transitive dependency issue in more detail (since a lot of people use
3.3.x) ?

Thanks

On Apr 16, 2017, at 1:56 AM, Sathi Chowdhury <Sathi.Chowdhury@elliemae.com> wrote:

Ok finally able to run the job fine ...the culprit was an older version of aws inside flink
kinesis connector jar , also rebuilt flink again from source with maven 3.25 ,I was on 3.3*
and it had weird transitive dependency problems.




On Apr 15, 2017, at 11:13 AM, Sathi Chowdhury <Sathi.Chowdhury@elliemae.com> wrote:

I have redone the pipeline with flink-1.3-SNAPSHOT and running on EMR 5.4, the aws-sdk-java
latest libraries directly in flink lib dir.

I have come to the point where I get the java.net.SocketException: Broken pipe (Write failed).
Eager to get a reply and a clue on this!

 

java.io.IOException: Error sending data back to client (ip-172-31-42-238/172.31.42.238:42753)

        at org.apache.flink.contrib.streaming.CollectSink.invoke(CollectSink.java:64)

        at org.apache.flink.streaming.api.operators.StreamSink.processElement(StreamSink.java:38)

        at org.apache.flink.streaming.runtime.io.StreamInputProcessor.processInput(StreamInputProcessor.java:208)

        at org.apache.flink.streaming.runtime.tasks.OneInputStreamTask.run(OneInputStreamTask.java:66)

        at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:261)

        at org.apache.flink.runtime.taskmanager.Task.run(Task.java:679)

        at java.lang.Thread.run(Thread.java:745)

Caused by: com.esotericsoftware.kryo.KryoException: java.net.SocketException: Broken pipe
(Write failed)

        at com.esotericsoftware.kryo.io.Output.flush(Output.java:165)

        at com.esotericsoftware.kryo.io.Output.require(Output.java:142)

        at com.esotericsoftware.kryo.io.Output.writeString_slow(Output.java:444)

        at com.esotericsoftware.kryo.io.Output.writeString(Output.java:345)

        at com.esotericsoftware.kryo.serializers.DefaultSerializers$StringSerializer.write(DefaultSerializers.java:173)

        at com.esotericsoftware.kryo.serializers.DefaultSerializers$StringSerializer.write(DefaultSerializers.java:166)

        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:599)

        at com.esotericsoftware.kryo.serializers.MapSerializer.write(MapSerializer.java:95)

        at com.esotericsoftware.kryo.serializers.MapSerializer.write(MapSerializer.java:21)

        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:599)

        at org.apache.flink.api.java.typeutils.runtime.kryo.KryoSerializer.serialize(KryoSerializer.java:202)

        at org.apache.flink.contrib.streaming.CollectSink.invoke(CollectSink.java:61)

        ... 6 more

Caused by: java.net.SocketException: Broken pipe (Write failed)

        at java.net.SocketOutputStream.socketWrite0(Native Method)

        at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:111)

        at java.net.SocketOutputStream.write(SocketOutputStream.java:155)

        at java.io.DataOutputStream.write(DataOutputStream.java:107)

        at org.apache.flink.api.java.typeutils.runtime.DataOutputViewStream.write(DataOutputViewStream.java:41)

        at com.esotericsoftware.kryo.io.Output.flush(Output.java:163)

        ... 17 more

Thanks

 

 

From: Sathi Chowdhury <Sathi.Chowdhury@elliemae.com>
Date: Friday, April 14, 2017 at 1:29 AM
To: "user@flink.apache.org" <user@flink.apache.org>
Subject: Re: Flink errors out and job fails--IOException from CollectSink.open()

 

I am consistently seeing the same behavior…tried with elevated memory for job manager and
taskmanager

taskmanager.rpc.port: 6123

taskmanager.data.port: 4964

taskmanager.heap.mb: 39000

taskmanager.numberOfTaskSlots: 1

taskmanager.network.numberOfBuffers: 16368

taskmanager.memory.preallocate: false

parallelization.degree.default: 4

even though the jobmanager is  restarting the flink job ,but the subtasks once reach to cancelled
state does not revive

I have no clue how to approach this.

Thanks

 

 

From: Sathi Chowdhury <Sathi.Chowdhury@elliemae.com>
Date: Thursday, April 13, 2017 at 9:52 PM
To: Ted Yu <yuzhihong@gmail.com>, "user@flink.apache.org" <user@flink.apache.org>
Subject: Re: Flink errors out and job fails--IOException from CollectSink.open()

 

In my jobmanager log I see this exception , probably is the root cause why the whole job is
killed…is there any memory problem in jobmanager ? any clue for this error below?

I ran the yarn-session

 

 

And my flink-conf.yaml is pretty much unmodified

jobmanager.heap.mb: 256

 

taskmanager.heap.mb: 512

 

taskmanager.numberOfTaskSlots: 2

 

taskmanager.memory.preallocate: false

 

parallelism.default: 1

 

invoke of yarn-session.sh

HADOOP_CONF_DIR=/etc/hadoop/conf $FLINK_HOME/bin/yarn-session.sh -d -n 2 -s 1 -tm 2048

 

Thanks

The error in job manager is as below

 

2017-04-14 04:26:33,570 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph      
- Co-Flat Map -> Sink: Unnamed (1/1) (0c515e082713970381dcd34da87cfcf4) switched from RUNNING
to FAILED.

java.lang.RuntimeException: Could not forward element to next operator

        at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:425)

        at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:407)

        at org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:797)

        at org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:775)

        at org.apache.flink.streaming.api.operators.TimestampedCollector.collect(TimestampedCollector.java:51)

        at com.elliemae.stream.StreamerImpl$StreamerCoFlatMapFunction.flatMap2(StreamerImpl.java:253)

        at com.elliemae.stream.StreamerImpl$StreamerCoFlatMapFunction.flatMap2(StreamerImpl.java:234)

        at org.apache.flink.streaming.api.operators.co.CoStreamFlatMap.processElement2(CoStreamFlatMap.java:56)

        at org.apache.flink.streaming.runtime.io.StreamTwoInputProcessor.processInput(StreamTwoInputProcessor.java:213)

        at org.apache.flink.streaming.runtime.tasks.TwoInputStreamTask.run(TwoInputStreamTask.java:87)

        at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:272)

        at org.apache.flink.runtime.taskmanager.Task.run(Task.java:655)

        at java.lang.Thread.run(Thread.java:745)

Caused by: java.io.IOException: Error sending data back to client (ip-172-31-31-172/172.31.31.172:46147)

        at org.apache.flink.contrib.streaming.CollectSink.invoke(CollectSink.java:64)

        at org.apache.flink.streaming.api.operators.StreamSink.processElement(StreamSink.java:38)

        at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:422)

        ... 12 more

Caused by: com.esotericsoftware.kryo.KryoException: java.net.SocketException: Connection reset

        at com.esotericsoftware.kryo.io.Output.flush(Output.java:165)

        at com.esotericsoftware.kryo.io.Output.require(Output.java:142)

        at com.esotericsoftware.kryo.io.Output.writeString_slow(Output.java:444)

        at com.esotericsoftware.kryo.io.Output.writeString(Output.java:345)

        at com.esotericsoftware.kryo.serializers.DefaultSerializers$StringSerializer.write(DefaultSerializers.java:173)

        at com.esotericsoftware.kryo.serializers.DefaultSerializers$StringSerializer.write(DefaultSerializers.java:166)

        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:599)

        at com.esotericsoftware.kryo.serializers.MapSerializer.write(MapSerializer.java:95)

        at com.esotericsoftware.kryo.serializers.MapSerializer.write(MapSerializer.java:21)

        at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:599)

        at org.apache.flink.api.java.typeutils.runtime.kryo.KryoSerializer.serialize(KryoSerializer.java:203)

        at org.apache.flink.contrib.streaming.CollectSink.invoke(CollectSink.java:61)

        ... 14 more

Caused by: java.net.SocketException: Connection reset

        at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:115)

        at java.net.SocketOutputStream.write(SocketOutputStream.java:155)

        at java.io.DataOutputStream.write(DataOutputStream.java:107)

        at org.apache.flink.api.java.typeutils.runtime.DataOutputViewStream.write(DataOutputViewStream.java:39)

        at com.esotericsoftware.kryo.io.Output.flush(Output.java:163)

        ... 25 more

2017-04-14 04:26:33,572 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph      
- Job Flink Streaming Job (6c9267453a74d0ef58e678351ac0b49c) switched from state RUNNING to
FAILING.

2017-04-14 04:49:10,707 WARN  akka.remote.ReliableDeliverySupervisor                      
- Association with remote system [akka.tcp://flink@ip-172-31-31-172.us-west-2.compute.internal:37737]
has failed, address is now gated for [5000] ms. Reason: [Association failed with [akka.tcp://flink@ip-172-31-31-172.us-west-2.compute.internal:37737]]
Caused by: [Connection refused: ip-172-31-31-172.us-west-2.compute.internal/172.31.31.172:37737]

2017-04-14 04:49:10,712 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph      
- Source: Custom Source (1/1) (b9af6dd459e576a669a12b08a830c24e) switched from DEPLOYING to
RUNNING.

2017-04-14 04:49:10,713 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph      
- Source: Custom Source (1/1) (c5fe4b6df26e03f4c2604ec89a92ad8f) switched from DEPLOYING to
RUNNING.

2017-04-14 04:49:10,715 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph      
- Source: Custom Source (1/1) (7f614d51527252cbb9ffcfc0d660fe4e) switched from DEPLOYING to
RUNNING.

2017-04-14 04:49:10,717 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph      
- Co-Flat Map (1/1) (cd1f1ecf9408b4ac58bea6be99e5c89a) switched from DEPLOYING to RUNNING.

2017-04-14 04:49:10,718 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph      
- Co-Flat Map -> Sink: Unnamed (1/1) (82713fda323b6325815b1b228a3d93f8) switched from DEPLOYING
to RUNNING.

2017-04-14 04:49:10,740 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph      
- Co-Flat Map -> Sink: Unnamed (1/1) (82713fda323b6325815b1b228a3d93f8) switched from RUNNING
to FAILED.

java.io.IOException: Cannot connect to the client to send back the stream

        at org.apache.flink.contrib.streaming.CollectSink.open(CollectSink.java:80)

        at org.apache.flink.api.common.functions.util.FunctionUtils.openFunction(FunctionUtils.java:36)

        at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.open(AbstractUdfStreamOperator.java:112)

        at org.apache.flink.streaming.runtime.tasks.StreamTask.openAllOperators(StreamTask.java:386)

        at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:262)

        at org.apache.flink.runtime.taskmanager.Task.run(Task.java:655)

        at java.lang.Thread.run(Thread.java:745)

Caused by: java.net.ConnectException: Connection refused (Connection refused)

        at java.net.PlainSocketImpl.socketConnect(Native Method)

        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)

        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)

        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)

        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)

        at java.net.Socket.connect(Socket.java:589)

        at java.net.Socket.connect(Socket.java:538)

        at java.net.Socket.<init>(Socket.java:434)

        at java.net.Socket.<init>(Socket.java:244)

        at org.apache.flink.contrib.streaming.CollectSink.open(CollectSink.java:75)

        ... 6 more

 

 

From: Ted Yu <yuzhihong@gmail.com>
Date: Thursday, April 13, 2017 at 6:01 PM
To: Sathi Chowdhury <Sathi.Chowdhury@elliemae.com>
Cc: "user@flink.apache.org" <user@flink.apache.org>
Subject: Re: Flink errors out and job fails--IOException from CollectSink.open()

 

Here is the line where NPE was thrown:

 

    mainThread.interrupt(); // the main thread may be sleeping for the discovery interval

 

I wonder if runFetcher() encountered running being false - otherwise mainThread should not
have been null.

 

Looks like we should check whether mainThread is null when shutting down.

 

On Thu, Apr 13, 2017 at 5:46 PM, Sathi Chowdhury <Sathi.Chowdhury@elliemae.com> wrote:

The taskmanger log does not point a line in my code ..but it seems like the error occurs while
it is trying to fetch kinesis record inside connector jar

 

red sequence number 49572261908151269541343187919820576263466496304458235906

2017-04-13 23:28:23,470 INFO  org.apache.flink.streaming.connectors.kinesis.FlinkKinesisConsumer 
- Subtask 0 is seeding the fetcher with restored shard KinesisStreamShard{streamName='dev-ingest-kinesis-us-west-2',
shard='{ShardId: shardId-000000000009,HashKeyRange: {StartingHashKey: 306254130228844617117037146688591390310,EndingHashKey:
340282366920938463463374607431768211455},SequenceNumberRange: {StartingSequenceNumber: 49572254078827945986407789245674345090539511066904232082,}}'},
starting state set to the restored sequence number LATEST_SEQUENCE_NUM

2017-04-13 23:28:23,471 WARN  org.apache.flink.streaming.connectors.kinesis.FlinkKinesisConsumer 
- Error while closing Kinesis data fetcher

java.lang.NullPointerException

        at org.apache.flink.streaming.connectors.kinesis.internals.KinesisDataFetcher.shutdownFetcher(KinesisDataFetcher.java:472)

        at org.apache.flink.streaming.connectors.kinesis.FlinkKinesisConsumer.cancel(FlinkKinesisConsumer.java:246)

        at org.apache.flink.streaming.connectors.kinesis.FlinkKinesisConsumer.close(FlinkKinesisConsumer.java:256)

        at org.apache.flink.api.common.functions.util.FunctionUtils.closeFunction(FunctionUtils.java:43)

        at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.dispose(AbstractUdfStreamOperator.java:127)

        at org.apache.flink.streaming.runtime.tasks.StreamTask.disposeAllOperators(StreamTask.java:442)

        at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:343)

        at org.apache.flink.runtime.taskmanager.Task.run(Task.java:655)

        at java.lang.Thread.run(Thread.java:745)

2017-04-13 23:28:23,471 WARN  org.apache.flink.streaming.connectors.kinesis.FlinkKinesisConsumer 
- Error while closing Kinesis data fetcher

java.lang.NullPointerException

        at org.apache.flink.streaming.connectors.kinesis.internals.KinesisDataFetcher.shutdownFetcher(KinesisDataFetcher.java:472)

        at org.apache.flink.streaming.connectors.kinesis.FlinkKinesisConsumer.cancel(FlinkKinesisConsumer.java:246)

        at org.apache.flink.streaming.connectors.kinesis.FlinkKinesisConsumer.close(FlinkKinesisConsumer.java:256)

        at org.apache.flink.api.common.functions.util.FunctionUtils.closeFunction(FunctionUtils.java:43)

        at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.dispose(AbstractUdfStreamOperator.java:127)

        at org.apache.flink.streaming.runtime.tasks.StreamTask.disposeAllOperators(StreamTask.java:442)

        at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:343)

        at org.apache.flink.runtime.taskmanager.Task.run(Task.java:655)

        at java.lang.Thread.run(Thread.java:745)

2017-04-13 23:28:23,472 INFO  org.apache.flink.runtime.taskmanager.Task                 
- Source: Custom Source (1/1) (8a7301a437cb2d052208ee42c994104b) switched from CANCELING to
CANCELED.

2017-04-13 23:28:23,471 INFO  org.apache.flink.streaming.connectors.kinesis.FlinkKinesisConsumer 
- Subtask 0 is seeding the fetcher with restored shard KinesisStreamShard{streamName='dev-ingest-kinesis-us-west-2',
shard='{ShardId: shardId-000000000006,HashKeyRange: {StartingHashKey: 204169420152563078078024764459060926873,EndingHashKey:
238197656844656924424362225202237748018},SequenceNumberRange: {StartingSequenceNumber: 49572254078761043750812197376249737935721565982386290786,}}'},
starting state set to the restored sequence number LATEST_SEQUENCE_NUM

2017-04-13 23:28:23,472 INFO  org.apache.flink.runtime.taskmanager.Task                 
- Freeing task resources for Source: Custom Source (1/1) (8a7301a437cb2d052208ee42c994104b).

 

 

From: Sathi Chowdhury <Sathi.Chowdhury@elliemae.com>
Date: Thursday, April 13, 2017 at 5:44 PM
To: Ted Yu <yuzhihong@gmail.com>


Cc: "user@flink.apache.org" <user@flink.apache.org>
Subject: Re: Flink errors out and job fails--IOException from CollectSink.open()

 

Hi Ted, Sorry for my big font earlier…was not intended J

 

I am on flink 1.2.0

I built flink-connector-kinesis_2.10-1.2.0.jar from source and included in the fatjar I am
running.

Followed this http://www.kidder.io/2017/02/15/flink-kinesis-streaming-connector/

 

 

From code I read a kinesis stream using

 

consumerConfig.setProperty(ConsumerConfigConstants.AWS_REGION, region);
consumerConfig.setProperty(ConsumerConfigConstants.DEFAULT_STREAM_INITIAL_POSITION, "LATEST");
consumerConfig.setProperty(ConsumerConfigConstants.AWS_CREDENTIALS_PROVIDER, "AUTO");
consumerConfig.setProperty(ConsumerConfigConstants.SHARD_GETRECORDS_MAX, "10");
consumerConfig.setProperty(ConsumerConfigConstants.SHARD_GETRECORDS_RETRIES, "200");
consumerConfig.setProperty(ConsumerConfigConstants.SHARD_GETRECORDS_INTERVAL_MILLIS, "2000");
DataStream<Map<String, Object>> stream = env.addSource(new FlinkKinesisConsumer<>(inputStream,
new MyJsonDeserializationSchema(), consumerConfig));

 

 

While I push the json event to the Kinesis stream intermittently I see this NPE and flink
job fails

 

2017-04-14 00:31:54,672 WARN  org.apache.flink.streaming.connectors.kinesis.FlinkKinesisConsumer 
- Error while closing Kinesis data fetcher
java.lang.NullPointerException
               at org.apache.flink.streaming.connectors.kinesis.internals.KinesisDataFetcher.shutdownFetcher(KinesisDataFetcher.java:472)
               at org.apache.flink.streaming.connectors.kinesis.FlinkKinesisConsumer.cancel(FlinkKinesisConsumer.java:246)
               at org.apache.flink.streaming.connectors.kinesis.FlinkKinesisConsumer.close(FlinkKinesisConsumer.java:256)
               at org.apache.flink.api.common.functions.util.FunctionUtils.closeFunction(FunctionUtils.java:43)
               at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.dispose(AbstractUdfStreamOperator.java:127)
               at org.apache.flink.streaming.runtime.tasks.StreamTask.disposeAllOperators(StreamTask.java:442)
               at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:343)
               at org.apache.flink.runtime.taskmanager.Task.run(Task.java:655)
               at java.lang.Thread.run(Thread.java:745)
 

Thanks

Sathi

 

 

 

From: Ted Yu <yuzhihong@gmail.com>
Date: Thursday, April 13, 2017 at 5:02 PM
To: Sathi Chowdhury <Sathi.Chowdhury@elliemae.com>
Cc: "user@flink.apache.org" <user@flink.apache.org>
Subject: Re: Flink errors out and job fails--IOException from CollectSink.open()

 

Can you give us a bit more information ?

 

release of flink

snippet of your code

 

Thanks

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