Firstly, what exact issue are you facing? The line you've mentioned simply states that some thread owns a lock on an object GetQueueLock (at some method - which I think not mentioned in your post).
Generally, the thread dump gives information about what thread is doing what. e.g. if Thread A is holding lock on resource R in method M, thread dump will mention so.
Further, it will also mention the memory address of resource R - so that you can search with this address in the log and figure out what other threads were waiting to acquire lock on resource R (this approach is more helpful in understanding deadlock situations).