Since the queue initialization line is after the thread start, so there
is a potential NPE once the ContinueExtractor is initialized before
the queue is initialized, so move the queue initlialization code before
the thread start line.
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Since the queue initialization line is after the thread start, so there is a potential NPE once the
ContinueExtractor
is initialized before the queue is initialized, so move the queue initlialization code before the thread start line.[Ticket: #92]