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List:       nepomuk
Subject:    Re: [Nepomuk] Can virtuoso requests be cancelled?
From:       Sebastian_Trüg <trueg () kde ! org>
Date:       2012-07-09 20:29:37
Message-ID: 4FFB3F31.2050709 () kde ! org
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On 07/09/2012 04:56 PM, David Faure wrote:
> So, I have these completion queries running for 27 minutes, even after I type
> another string to complete. Can virtuoso queries be cancelled while they're \
> running? 
> Looking at nepomukqueryservice I see that it's doing a blocking "wait for ready
> read" for 10 minutes on the soprano socket:
> 
> #0  0x00007ffff435f803 in select () from /lib64/libc.so.6
> #1  0x00007ffff043d76d in Soprano::Socket::waitForReadyRead (this=0x7fffe4002fd0, \
> timeout=600000) at /d/kde/src/4/soprano/client/socket.cpp:86 #2  0x00007ffff04437e0 \
> in Soprano::Client::ClientConnection::iteratorNext (this=0x7fffe4003570, \
> id=995280421) at /d/kde/src/4/soprano/client/clientconnection.cp p:570
> #3  0x00007ffff044791c in Soprano::Client::ClientQueryResultIteratorBackend::next \
> (this=0x7fffe4003880) at /d/kde/src/4/soprano/client/clientqueryresultiterator \
> backend.cpp:46 #4  0x00007fffeba30edf in \
> Soprano::Iterator<Soprano::BindingSet>::next (this=0x7fffeb80ea90) at \
> /d/kde/inst/kde4.9/include/Soprano/../soprano/iterator.h:239 #5  0x00007fffeba30366 \
> in Nepomuk2::Query::SearchRunnable::run (this=0x7a3140) at \
> /d/kde/src/4/nepomuk-core/services/queryservice/searchrunnable.cpp:91 #6  \
> 0x00007ffff78e12fd in QThreadPoolThread::run (this=0x801860) at \
> concurrent/qthreadpool.cpp:107 #7  0x00007ffff78f1f28 in QThreadPrivate::start \
> (arg=0x801860) at thread/qthread_unix.cpp:307 #8  0x00007ffff7631f05 in \
> start_thread () from /lib64/libpthread.so.0 #9  0x00007ffff436610d in clone () from \
> /lib64/libc.so.6 
> I presume this means there's no way to cancel a running query?
> Even just closing the socket might not make virtuoso realize that it should abort, \
> right? But even if it did, I'm not sure we want to close and reopen sockets at \
> every keypress...

No, cannot stop the queries AFAIK
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