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Message-ID: <a4843924-8140-4981-9ef4-53e6963bf081@vi6g2000pbc.googlegroups.com>
Subject: "there were emits but no data" when jsMode set to true
From: Paul McCallick <p...@mccallick.com>
To: mongodb-user <mongodb-user@googlegroups.com>
Content-Type: text/plain; charset=ISO-8859-1

I'm getting the "there were emits but no data!" error message when
trying to do a simple map reduce.  It works when I jsmode is false,
but not when jsmode is true.

I've looked that mongo code a bit and can't figure out what's wrong.
It looks like this error is triggered when "output" is 0.  It also
looks like "output" should be getting set to _keyCt.  I can verify
that _keyCt is not 0 by returning it my results, but here's what I get
from mongo:

counts" : { "input" : 28, "emit" : 76150, "reduce" : 3221, "output" :
0 }

map = "function() {emit(this.SecurityId,
{securityId:this.SecurityId,keycount:_keyCt});}";
reduce = "function(key,values){return values[0];}";