do you mean "nc -l 9000"? If so, I did start before.
the task manager running on the master can connect to the job manager. but
the task manager on the slave node cannot. The second time that I start the
WordCount task it recognizes only one task manager (from the master) and
runs my task. But the task manager from the slave does not process anything
and it is started.
here is the error stack trace from the slave node:
2017-05-30 05:10:39,853 INFO
org.apache.flink.runtime.state.heap.HeapKeyedStateBackend -
Initializing heap keyed state backend with stream factory.
2017-05-30 05:10:39,977 INFO org.apache.flink.runtime.taskmanager.Task
- Source: Socket Stream -> Flat Map (1/1)
(d5e3d87395995d3977d2f472de896e23) switched from RUNNING to FAILED.
java.net.ConnectException: 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
org.apache.flink.streaming.api.functions.source.SocketTextStreamFunction.run(SocketTextStreamFunction.java:96)
at
org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:87)
at
org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:56)
at
org.apache.flink.streaming.runtime.tasks.SourceStreamTask.run(SourceStreamTask.java:99)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:306)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:703)
at java.lang.Thread.run(Thread.java:745)
2017-05-30 05:10:40,016 INFO org.apache.flink.runtime.taskmanager.Task
- Freeing task resources for Source: Socket Stream -> Flat
Map (1/1) (d5e3d87395995d3977d2f472de896e23).
*--*
*-- Felipe Gutierrez*
*-- skype: felipe.o.gutierrez*
*--* *https://felipeogutierrez.blogspot.com
<https://felipeogutierrez.blogspot.com>*
On Mon, Aug 6, 2018 at 2:17 PM vino yang <yanghua1...@gmail.com> wrote:
> Hi Felipe,
>
> From the exception information, it seems that you did not start the socket
> server, the socket source needs to connect to the socket server.
>
> Please make sure the socket server has started and is available.
>
> Thanks, vino.
>
> 2018-08-06 18:45 GMT+08:00 Felipe Gutierrez <felipe.o.gutier...@gmail.com>
> :
>
>> yes.
>>
>> when I execute the jps command on the master node I see TaskManagerRunner
>> and StandaloneSessionClusterEntrypoint (which I believe it is
>> the jobManager). On the slave nodes I see TaskManagerRunner when I run jps
>> command
>>
>>
>> *--*
>> *-- Felipe Gutierrez*
>>
>> *-- skype: felipe.o.gutierrez*
>> *--* *https://felipeogutierrez.blogspot.com
>> <https://felipeogutierrez.blogspot.com>*
>>
>>
>> On Mon, Aug 6, 2018 at 12:13 PM miki haiat <miko5...@gmail.com> wrote:
>>
>>> Did you start job manager and task manager on the same resbery pi ?
>>>
>>> On Mon, 6 Aug 2018, 12:01 Felipe Gutierrez, <
>>> felipe.o.gutier...@gmail.com> wrote:
>>>
>>>> Hello everyone,
>>>>
>>>> I am trying to run Flink on Raspberry Pis. My first test for word count
>>>> in a single node worked. I just have to decrease the Heap memory of the
>>>> jobmanager.heap.mb and taskmanager.heap.mb to 512.
>>>> My second test is to add 2 slave nodes I got the error: "Java
>>>> HotSpot(TM) Client VM warning: G1 GC is disabled in this release." at the
>>>> file log/flink-root-taskexecutor-0-*.out.
>>>>
>>>> This link (
>>>> https://blog.sflow.com/2016/06/raspberry-pi-real-time-network-analytics.html)
>>>> says that in order to Raspberry Pi ARM architecture works with JVM it is
>>>> necessary to configure the JVM as:
>>>> -Xms600M
>>>> -Xmx600M
>>>> -XX:+UseParNewGC
>>>> -XX:+UseConcMarkSweepGC
>>>> -XX:+CMSIncrementalMode
>>>>
>>>> then I set this variables on the path inside the file flink-conf.yaml
>>>> env.java.opts: "-XX:+UseParNewGC -XX:+UseConcMarkSweepGC
>>>> -XX:+CMSIncrementalMode"
>>>> env.java.opts.jobmanager: "-XX:+UseParNewGC -XX:+UseConcMarkSweepGC
>>>> -XX:+CMSIncrementalMode"
>>>> env.java.opts.taskmanager: "-XX:+UseParNewGC -XX:+UseConcMarkSweepGC
>>>> -XX:+CMSIncrementalMode"
>>>>
>>>> and the error "Java HotSpot(TM) Client VM warning: G1 GC is disabled in
>>>> this release." is not showing anymore. However, the connection from the
>>>> master node to the slave node is still not possible. Does anybody know how
>>>> I must configure flink to deal with that?
>>>>
>>>> This is the error stack trace:
>>>>
>>>> 2017-05-25 12:40:26,421 INFO
>>>> org.apache.flink.runtime.executiongraph.ExecutionGraph - Source:
>>>> Socket Stream -> Flat Map (1/1) (b81b6492fc0860367be422d0b0bf4358) switched
>>>> from DEPLOYING to RUNNING.
>>>> 2017-05-25 12:40:26,891 INFO
>>>> org.apache.flink.runtime.executiongraph.ExecutionGraph - Source:
>>>> Socket Stream -> Flat Map (1/1) (b81b6492fc0860367be422d0b0bf4358) switched
>>>> from RUNNING to FAILED.
>>>> java.net.ConnectException: 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
>>>> org.apache.flink.streaming.api.functions.source.SocketTextStreamFunction.run(SocketTextStreamFunction.java:96)
>>>> at
>>>> org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:87)
>>>> at
>>>> org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:56)
>>>> at
>>>> org.apache.flink.streaming.runtime.tasks.SourceStreamTask.run(SourceStreamTask.java:99)
>>>> at
>>>> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:306)
>>>> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:703)
>>>> at java.lang.Thread.run(Thread.java:745)
>>>> 2017-05-25 12:40:26,898 INFO
>>>> org.apache.flink.runtime.executiongraph.ExecutionGraph - Job Socket
>>>> Window WordCount (71c6d7796eccf6587d9d1deda0490e09) switched from state
>>>> RUNNING to FAILING.
>>>> java.net.ConnectException: 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
>>>> org.apache.flink.streaming.api.functions.source.SocketTextStreamFunction.run(SocketTextStreamFunction.java:96)
>>>> at
>>>> org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:87)
>>>> at
>>>> org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:56)
>>>> at
>>>> org.apache.flink.streaming.runtime.tasks.SourceStreamTask.run(SourceStreamTask.java:99)
>>>> at
>>>> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:306)
>>>> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:703)
>>>> at java.lang.Thread.run(Thread.java:745)
>>>> 2017-05-25 12:40:26,921 INFO
>>>> org.apache.flink.runtime.executiongraph.ExecutionGraph -
>>>> Window(TumblingProcessingTimeWindows(5000), ProcessingTimeTrigger,
>>>> ReduceFunction$1, PassThroughWindowFunction) -> Sink: Print to Std. Out
>>>> (1/1) (aa1a0e7ee3a1d3ad8f99b2608bd64c5b) switched from RUNNING to
>>>> CANCELING.
>>>> 2017-05-25 12:40:26,975 INFO
>>>> org.apache.flink.runtime.executiongraph.ExecutionGraph -
>>>> Window(TumblingProcessingTimeWindows(5000), ProcessingTimeTrigger,
>>>> ReduceFunction$1, PassThroughWindowFunction) -> Sink: Print to Std. Out
>>>> (1/1) (aa1a0e7ee3a1d3ad8f99b2608bd64c5b) switched from CANCELING to
>>>> CANCELED.
>>>>
>>>>
>>>>
>>>> Thanks, Felipe
>>>> *--*
>>>> *-- Felipe Gutierrez*
>>>>
>>>> *-- skype: felipe.o.gutierrez*
>>>> *--* *https://felipeogutierrez.blogspot.com
>>>> <https://felipeogutierrez.blogspot.com>*
>>>>
>>>
>
