[windows} node down caused by excessive memory used in XDCR

Setup xdcr testing

Environment:
Source cluster:
4 node windows physical servers. Each server is 4 core cpu, 32 GB RAM, 2 disks
10.2.1.64
10.2.1.65
10.2.1.66
10.2.1.67

Target cluster:
2 node windows physical servers. Each server is 4 core cpu, 32 GB RAM, 2 disks
10.2.1.62
10.2.1.63

Both source and target clusters are installed couchbase server 2.2.0-821 (rc3)
Manifest file of this build http://builds.hq.northscale.net/latestbuilds/couchbase-server-enterprise_x86_64_2.2.0-821-rel.setup.exe.manifest.xml

At source cluster, create 2 buckets, default and sasl with one replica
Load 50 million items with key size from 128 bytes to 512 bytes to each bucket
Each bucket has one doc with one view

At source cluster, failover 2 nodes (66 and 67), add node 66 back
Rebalance ==> failed due to node down

Rebalance exited with reason {important_nodes_went_down,
{ns_node_disco_events,
['ns_1@10.2.1.64','ns_1@10.2.1.65',
'ns_1@10.2.1.66'],
['ns_1@10.2.1.65','ns_1@10.2.1.66']}}
ns_orchestrator002 ns_1@10.2.1.65 17:38:30 - Thu Oct 10, 2013
Server error during processing: ["web request failed",

{path, "/pools/default/buckets/default/nodes/10.2.1.64:8091/stats"}

,

{type,exit}

,
{what,
{{nodedown,'ns_1@10.2.1.64'},
{gen_server,call,
[

{hot_keys_keeper,'ns_1@10.2.1.64'}

,

{get_local_keys,"default"}

]}}},
{trace,
[

{gen_server,call,2}

,

{menelaus_stats,handle_bucket_node_stats,4}

,

{request_throttler,do_request,3}

,

{menelaus_web,loop,3}

,

{mochiweb_http,headers,5}

,

{proc_lib,init_p_do_apply,3}

]}] menelaus_web019 ns_1@10.2.1.65 17:38:25 - Thu Oct 10, 2013
Node 'ns_1@10.2.1.66' saw that node 'ns_1@10.2.1.64' went down. Details: [

{nodedown_reason, net_tick_timeout}] ns_node_disco005 ns_1@10.2.1.66 17:38:18 - Thu Oct 10, 2013
Node 'ns_1@10.2.1.65' saw that node 'ns_1@10.2.1.64' went down. Details: [{nodedown_reason, net_tick_timeout}

] ns_node_disco005 ns_1@10.2.1.65 17:38:11 - Thu Oct 10, 2013