Query node not reachable after a bucket flush in test_couchbase_bucket_flush

Test case that is failing -
./testrunner -i /tmp/recoverytests-add-index.ini -t 2i.recovery_2i.SecondaryIndexingRecoveryTests.test_couchbase_bucket_flush,nodes_init=5,nodes_in=1,initial=,before=create_index,after=drop_index,groups=simple,dataset=default,doc-per-day=10,services_init=n1ql:kv-kv-kv-index-index,doc-per-day=50,standard_buckets=1,sasl_buckets=1,skip_build_tuq=True,cbq_version=sherlock,scan_consistency=request_plus,get-cbcollect-info=True

Steps performed by the test -

• Create three buckets bucket0, default,standard_bucket0
• Create about 10 indexes in each bucket
• Flush the three buckets
• Create an index on bucket0 - this fails

2015-06-01 11:35:52 | INFO | MainProcess | test_thread | [basetestcase.sleep] sleep for 3 secs. ...
2015-06-01 11:35:59 | INFO | MainProcess | test_thread | [rest_client.flush_bucket] Flush for bucket 'bucket0' was triggered
2015-06-01 11:36:05 | INFO | MainProcess | test_thread | [rest_client.flush_bucket] Flush for bucket 'default' was triggered
2015-06-01 11:36:10 | INFO | MainProcess | test_thread | [rest_client.flush_bucket] Flush for bucket 'standard_bucket0' was triggered
2015-06-01 11:36:10 | INFO | MainProcess | test_thread | [base_2i._set_query_explain_flags] {'in_between':

{'query_explain_ops': False, 'create_index': False, 'drop_index': False, 'query_ops': False}

, 'initial':

{'query_explain_ops': False, 'create_index': False, 'drop_index': False, 'query_ops': False}

, 'after':

{'query_explain_ops': False, 'create_index': False, 'drop_index': True, 'query_ops': False}

, 'before': {'query_explain_ops': False, 'create_index': True, 'drop_index': False, 'query_ops': False}}
2015-06-01 11:46:39 | ERROR | MainProcess | Cluster_Thread | [rest_client._http_request] socket error while connecting to http://172.23.121.141:8093/query?statement=CREATE+INDEX+employeed0ba2c6644684606bbb3e33faba51feejob_title+ON+bucket0%28job_title%29+USING+GSI+ error timed out

From query log, I dont see logs between 11:37:07 to 11:47:31.

The create index is issued around 11:46:39.

Nodes:
[SERVER_1]
ip:172.23.121.141
services=n1ql,kv

[SERVER_2]
ip:172.23.121.142
services=kv

[SERVER_3]
ip:172.23.121.143
services=kv

[SERVER_4]
ip:172.23.121.144
services=index

[SERVER_5]
ip:172.23.121.145
services=index

The logs from all five nodes are uploaded at: https://s3-ap-southeast-1.amazonaws.com/indexing-test/logs/Jenkins/Recovery_1/testrunner-15-Jun-01_11-20-53.tar.gz

The test output is captured in testoutput.log file.