[System test] Indexing gets stuck, post swap-rebalance

1. Setup a 7 node cluster, 2 buckets, 1 ddoc X 2 views per bucket
2. Load items
3. Swap rebalance out orchestrator

Indexing on ddoc2 is stuck, couchdb logs show error as below -

–
[couchdb:error,2014-07-07T16:02:13.025,ns_1@10.6.2.166:<0.2445.41>:couch_log:error:42]Set view `saslbucket`, replica group `_design/ddoc2`, doc loader error
error:

{badmatch,undefined}

stacktrace: [{couch_upr_client,enum_docs_since,8,
[

{file, "/buildbot/build_slave/centos-5-x64-300-builder/build/build/couchdb/src/couch_upr/src/couch_upr_client.erl"}

,

{line,175}

]},
{couch_set_view_updater,'load_changes/8-fun-2',12,
[

{file, "/buildbot/build_slave/centos-5-x64-300-builder/build/build/couchdb/src/couch_set_view/src/couch_set_view_updater.erl"}

,

{line,529}

]},
{lists,foldl,3,[

{file,"lists.erl"}

,

{line,1248}

]},
{couch_set_view_updater,load_changes,8,
–