_reindex API issue

Hi Mark,

Below is the exact request made (using sense plugin)

POST /_reindex
{
"source": {
"index": "IdxOld"
},
"dest": {
"index": "IdxNew"
}
}

I passed the parameter wait_for_complete=true to request.
Few other information:
Source Index has 5 shards/1 Replica in settings and went with default mapping (all analyzed strings).
Target has a valid mapping, which it is intended for. It has 2 shards/1 Replica in settings.
No errors were thrown