[ 
https://issues.apache.org/jira/browse/FLINK-6642?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Chesnay Schepler updated FLINK-6642:
------------------------------------
    Description: 
The {{EnvironmentInformation#getOpenFileHandlesLimit}} is accessing the sun 
{{UnixOperatingSystemMXBean}} via reflection, but has no branch for Windows.

This causes the following exception to be logged whenever a TM is started:

{code}
2017-05-19 16:49:58,780 WARN  
org.apache.flink.runtime.util.EnvironmentInformation          - Unexpected 
error when accessing file handle limit
java.lang.IllegalArgumentException: object is not an instance of declaring class
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at 
org.apache.flink.runtime.util.EnvironmentInformation.getOpenFileHandlesLimit(EnvironmentInformation.java:245)
        at 
org.apache.flink.runtime.taskmanager.TaskManager$.main(TaskManager.scala:1528)
        at 
org.apache.flink.runtime.taskmanager.TaskManager.main(TaskManager.scala)
2017-05-19 16:49:58,780 INFO  org.apache.flink.runtime.taskmanager.TaskManager  
            - Cannot determine the maximum number of open file descriptors

{code}

  was:
The {{EnvironmentInformation#getOpenFileHandlesLimit}} is accessing t he sun 
{{UnixOperatingSystemMXBean}} via reflection, but has no branch for Windows.

This causes the following exception to be logged whenever a TM is started:

{code}
2017-05-19 16:49:58,780 WARN  
org.apache.flink.runtime.util.EnvironmentInformation          - Unexpected 
error when accessing file handle limit
java.lang.IllegalArgumentException: object is not an instance of declaring class
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at 
org.apache.flink.runtime.util.EnvironmentInformation.getOpenFileHandlesLimit(EnvironmentInformation.java:245)
        at 
org.apache.flink.runtime.taskmanager.TaskManager$.main(TaskManager.scala:1528)
        at 
org.apache.flink.runtime.taskmanager.TaskManager.main(TaskManager.scala)
2017-05-19 16:49:58,780 INFO  org.apache.flink.runtime.taskmanager.TaskManager  
            - Cannot determine the maximum number of open file descriptors

{code}


> EnvInformation#getOpenFileHandlesLimit should return -1 for Windows
> -------------------------------------------------------------------
>
>                 Key: FLINK-6642
>                 URL: https://issues.apache.org/jira/browse/FLINK-6642
>             Project: Flink
>          Issue Type: Bug
>          Components: Local Runtime
>    Affects Versions: 1.4.0
>            Reporter: Chesnay Schepler
>            Assignee: Chesnay Schepler
>
> The {{EnvironmentInformation#getOpenFileHandlesLimit}} is accessing the sun 
> {{UnixOperatingSystemMXBean}} via reflection, but has no branch for Windows.
> This causes the following exception to be logged whenever a TM is started:
> {code}
> 2017-05-19 16:49:58,780 WARN  
> org.apache.flink.runtime.util.EnvironmentInformation          - Unexpected 
> error when accessing file handle limit
> java.lang.IllegalArgumentException: object is not an instance of declaring 
> class
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>         at java.lang.reflect.Method.invoke(Unknown Source)
>         at 
> org.apache.flink.runtime.util.EnvironmentInformation.getOpenFileHandlesLimit(EnvironmentInformation.java:245)
>         at 
> org.apache.flink.runtime.taskmanager.TaskManager$.main(TaskManager.scala:1528)
>         at 
> org.apache.flink.runtime.taskmanager.TaskManager.main(TaskManager.scala)
> 2017-05-19 16:49:58,780 INFO  
> org.apache.flink.runtime.taskmanager.TaskManager              - Cannot 
> determine the maximum number of open file descriptors
> {code}



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