On 30 January 2013 12:26, Oleg Kalnichevski <[email protected]> wrote:
> On Wed, 2013-01-30 at 12:07 +0000, James Shaw wrote:
>> On 30 January 2013 11:54, Oleg Kalnichevski <[email protected]> wrote:
>> > On Wed, 2013-01-30 at 11:22 +0000, James Shaw wrote:
>> >> I'm having some trouble tracking this down, but I believe that
>> >> httpclient 4.2.3 is clearing the interrupt flag.
>> >>
>> >> My code looks like this:
>> >>
>> >> executorService.submit(new Runnable() {
>> >>     @Override public void run() {
>> >>         while (!Thread.currentThread().isInterrupted()) {
>> >>             consume(); // calls AWS SDK which uses Apache HttpClient
>> >>         }
>> >>     }
>> >> });
>> >>
>> >> Sometimes this loop does not terminate when calling
>> >> Future.cancel(true).  The only piece of diagnostics I have so far is
>> >> this:
>> >> Exception 'java.lang.InterruptedException' occurred in thread
>> >> 'queue-consumer-reader-thread-1' at
>> >> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.reportInterruptAfterWait(AbstractQueuedSynchronizer.java:2017)
>> >> Exception 'java.lang.InterruptedException' occurred in thread
>> >> 'queue-consumer-reader-thread-1' at
>> >> org.apache.http.impl.conn.tsccm.WaitingThread.await(WaitingThread.java:164)
>> >> Exception 'java.lang.InterruptedException' occurred in thread
>> >> 'queue-consumer-reader-thread-1' at
>> >> org.apache.http.impl.conn.tsccm.ConnPoolByRoute.getEntryBlocking(ConnPoolByRoute.java:410)
>> >> Exception 'java.lang.InterruptedException' occurred in thread
>> >> 'queue-consumer-reader-thread-1' at
>> >> org.apache.http.impl.conn.tsccm.ConnPoolByRoute.getEntryBlocking(ConnPoolByRoute.java:423)
>> >>
>> >> Should I not expect the interrupt flag to be preserved?  Do you have
>> >> any suggestions how I could isolate this bug (I'm not 100% sure if
>> >> it's in HttpClient or AWS client right now)?
>> >>
>> >> Thanks
>> >>
>> >
>> > I am not aware of any place in HttpClient where it might meddle with the
>> > interrupt flag.
>> Is there anywhere that InterruptException is caught and either not
>> rethrown, or the flag is not explicitly set again?  That would be
>> sufficient.
>>
>
> There are two places where InterruptedException is re-thrown as
> InterruptedIOException. I am not aware of any place where
> InterruptedException can be caught and not re-thrown.
>
But by rethrowing a different exception, the interrupt flag will be cleared, no?

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