We will need more information to offer any solution. The exception simply means that a TaskManager shut down, for which there are a myriad of possible explanations.

Please have a look at the TaskManager logs, they may contain a hint as to why it shut down.


On 09.04.2018 16:01, Javier Lopez wrote:
Hi,

"are you moving the job jar to the ~/flink-1.4.2/lib path ? " -> Yes, to every node in the cluster.

On 9 April 2018 at 15:37, miki haiat <miko5...@gmail.com <mailto:miko5...@gmail.com>> wrote:

    Javier
    "adding the jar file to the /lib path of every task manager"
    are you moving the job  jar to  the* ~/flink-1.4.2/lib path* ?

    On Mon, Apr 9, 2018 at 12:23 PM, Javier Lopez
    <javier.lo...@zalando.de <mailto:javier.lo...@zalando.de>> wrote:

        Hi,

        We had the same metaspace problem, it was solved by adding the
        jar file to the /lib path of every task manager, as explained
        here
        
https://ci.apache.org/projects/flink/flink-docs-release-1.4/monitoring/debugging_classloading.html#avoiding-dynamic-classloading
        
<https://ci.apache.org/projects/flink/flink-docs-release-1.4/monitoring/debugging_classloading.html#avoiding-dynamic-classloading>.
        As well we added these java options:
        "-XX:CompressedClassSpaceSize=100M -XX:MaxMetaspaceSize=300M
        -XX:MetaspaceSize=200M "

        From time to time we have the same problem with TaskManagers
        disconnecting, but the logs are not useful. We are using 1.3.2.

        On 9 April 2018 at 10:41, Alexander Smirnov
        <alexander.smirn...@gmail.com
        <mailto:alexander.smirn...@gmail.com>> wrote:

            I've seen similar problem, but it was not a heap size, but
            Metaspace.
            It was caused by a job restarting in a loop. Looks like
            for each restart, Flink loads new instance of classes and
            very soon in runs out of metaspace.

            I've created a JIRA issue for this problem, but got no
            response from the development team on it:
            https://issues.apache.org/jira/browse/FLINK-9132
            <https://issues.apache.org/jira/browse/FLINK-9132>


            On Mon, Apr 9, 2018 at 11:36 AM 王凯 <wangka...@163.com
            <mailto:wangka...@163.com>> wrote:

                thanks a lot,i will try it

                在 2018-04-09 00:06:02,"TechnoMage"
                <mla...@technomage.com <mailto:mla...@technomage.com>>
                写道:

                    I have seen this when my task manager ran out of
                    RAM. Increase the heap size.

                    flink-conf.yaml:
                    taskmanager.heap.mb
                    jobmanager.heap.mb

                    Michael

                    On Apr 8, 2018, at 2:36 AM, 王凯 <wangka...@163.com
                    <mailto:wangka...@163.com>> wrote:

                    <QQ图片20180408163927.png>
                    hi all, recently, i found a problem,it runs well
                    when start. But after long run,the exception
                    display as above,how can resolve it?










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