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Using ReadPreference.Secondary causes issues if read_secondary is not supplied with true #741

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5 changes: 5 additions & 0 deletions lib/mongodb/connection/repl_set.js
Original file line number Diff line number Diff line change
Expand Up @@ -106,6 +106,11 @@ var ReplSet = exports.ReplSet = function(servers, options) {
this._readPreference = null;
}

// If readpreference isn't set to primary only, then we'll need to allow reads from secondaries
if (this._readPreference != "primary") {
this._readSecondary = true;
}

// Strategy for picking a secondary
this.secondaryAcceptableLatencyMS = this.options['secondaryAcceptableLatencyMS'] == null ? 15 : this.options['secondaryAcceptableLatencyMS'];
this.strategy = this.options['strategy'];
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