Rebalance failed due to Bad Replicas during Delta Recovery

Test Case::
./testrunner i centos_x6401_01-failover_upr.ini get-cbcollect-info=False,get-logs=False,stop-on-failure=False,get-coredumps=False,force_kill_memached=True,std_vbucket_dist=20,total_vbuckets=128 -t failover.failovertests.FailoverTests.test_failover_then_add_back,skip_cleanup=True,replicas=1,num_failed_nodes=1,items=100000,standard_buckets=1,recoveryType=delta,graceful=True,GROUP=P2

SCENARIO

1. Create a 6 node cluster
2. Add 1 Standard Bucket, 1 Default and load each with 100000 items
3. Failvoer 1 Node and do delta recovery
4. Rebalance node

Error Observed: Rebalance failed due to Bad Replicas

2015-01-09 17:34:24 | ERROR | MainProcess | test_thread | [rest_client.print_UI_logs] {u'node': u'ns_1@10.3.5.115', u'code': 2, u'text': u"Bad replicators after rebalance:\nMissing = [

{'ns_1@10.3.5.116','ns_1@10.6.2.185',279}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',282}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',283}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',284}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',286}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',287}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',288}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',289}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',290}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',291}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',292}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',293}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',294}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',295}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',296}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',297}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',298}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',299}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',300}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',301}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',302}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',303}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',304}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',305}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',306}

,\n

{'ns_1@10.3.5.116','ns_1@10.6.2.185',307}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',445}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',446}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',447}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',448}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',449}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',450}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',451}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',452}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',453}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',454}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',455}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',456}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',457}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',458}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',459}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',460}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',461}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',462}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',463}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',464}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',465}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',466}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',467}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',468}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',469}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',470}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',471}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',472}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',473}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',474}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',475}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',476}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',477}

,\n

{'ns_1@10.3.5.117','ns_1@10.6.2.185',478}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',616}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',617}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',618}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',619}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',620}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',621}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',622}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',623}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',624}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',625}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',626}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',627}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',628}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',629}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',630}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',631}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',632}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',633}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',634}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',635}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',636}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',637}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',638}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',639}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',640}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',641}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',642}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',643}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',644}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',645}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',646}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',647}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',648}

,\n

{'ns_1@10.3.5.118','ns_1@10.6.2.185',649}