swap rebalance failed while querying views in parallel

The following testcase failed in 4.5.0-2550:

./testrunner -i INI_FILE get-cbcollect-info=True,get-logs=False,stop-on-failure=False,get-coredumps=True,demand_encryption=1,fail_on_errors=1,GROUP=ALL -t xdcr.rebalanceXDCR.Rebalance.swap_rebalance_replication_with_ddoc_compaction,items=100000,rdirection=bidirection,is_dev_ddoc=false,rebalance=C2,GROUP=P1,poll_timeout=900

with following error:

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ERROR: swap_rebalance_replication_with_ddoc_compaction (xdcr.rebalanceXDCR.Rebalance)
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Traceback (most recent call last):
File "pytests/xdcr/rebalanceXDCR.py", line 158, in swap_rebalance_replication_with_ddoc_compaction
task.result(self._poll_timeout)
File "lib/tasks/future.py", line 160, in result
return self.__get_result()
File "lib/tasks/future.py", line 112, in __get_result
raise self._exception
RebalanceFailedException: Rebalance Failed: seems like rebalance hangs. please check logs!

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Error occurred when the test was trying to do a swap rebalance while querying views in parallel - attaching logs and console output