Thread hangs reading from process output streams, even though process has terminated. (possible JDK bug?)

[roger riggs]

Hi Bruno,

Create an issue:
JDK-8044321 <https://bugs.openjdk.java.net/browse/JDK-8044321> EOF does 
not occur reading input from spawned cmd.exe process

I was able to reproduce it on java 7 but not java 8.

The implementation of Process does not mix handling of one Process 
instance with another
so it may be an interaction specific to cmd.exe.

Roger


On 5/29/2014 7:52 AM, Bruno Medeiros wrote:
> Any update on this? Has it been placed in the JVM bug database and/or have
> people tried to replicated it? (again note, it only appears to happen on
> JVM 7)
>
>
> On Tue, May 6, 2014 at 9:20 PM, Bruno Medeiros
> <bruno.do.medeiros at gmail.com>wrote:
>
>> After much chopping, I have finally narrowed it down to a single source
>> file, and no external dependencies (other than starting Windows' cmd.exe
>> process) :
>>
>> https://github.com/bruno-medeiros/Scratchpad/blob/jvm-processio-issue/jvm_process_bug/src/JVMProcessBug.java
>>
>> In this final form, I am now able to replicated the bug in my machine on
>> many different runs of the program even beyond the first one after booting.
>> But it doesn't occur every time, only about two thirds the time.
>> Tried running it again with JVM 8 several times but never got it to
>> reproduce there. Maybe it really isn't present in JVM 8, only 7. Hopefully
>> this should be enough for JVM developers to replicate it.
>>
>>
>> --
>> Bruno Medeiros
>> https://twitter.com/brunodomedeiros
>>
>
>