js: Fix issue with concurrent queue subscribers creating consumer #713
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Signed-off-by: Waldemar Quevedo <wally@synadia.com>
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When multiple concurrent subscribers start without an existing consumer, one of them would create the consumer, some of them would attach and others fail with a
consumer already existserror. In this change, we make the subscriptions that would have failed withconsumer already existserror to do an extra lookup of the latest consumer info to attach instead.Signed-off-by: Waldemar Quevedo wally@synadia.com