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/**
* Test that the mapReduce command fails gracefully when user-provided JavaScript code throws and
* that the user gets back a JavaScript stacktrace.
*
* @tags: [
* # mapReduce does not support afterClusterTime.
* does_not_support_causal_consistency,
* does_not_support_stepdowns,
* requires_scripting,
* ]
*/
(function() {
"use strict";
let coll = db.mr_tolerates_js_exception;
coll.drop();
for (let i = 0; i < 100; i++) {
assert.commandWorked(coll.insert({_id: i, a: 1}));
}
// Test that the command fails with a JS interpreter failure error when the reduce function
// throws.
let cmdOutput = db.runCommand({
mapReduce: coll.getName(),
map: function() {
emit(this.a, 1);
},
reduce: function(key, value) {
(function myFunction() {
throw new Error("Intentionally thrown inside reduce function");
})();
},
out: {inline: 1}
});
assert.commandFailedWithCode(cmdOutput, ErrorCodes.JSInterpreterFailure, tojson(cmdOutput));
assert(
/Intentionally thrown inside reduce function/.test(cmdOutput.errmsg),
() => "mapReduce didn't include the message from the exception thrown: " + tojson(cmdOutput));
assert(/myFunction@/.test(cmdOutput.errmsg),
() => "mapReduce didn't return the JavaScript stacktrace: " + tojson(cmdOutput));
assert(!cmdOutput.hasOwnProperty("stack"),
() => "mapReduce shouldn't return JavaScript stacktrace separately: " + tojson(cmdOutput));
assert(!cmdOutput.hasOwnProperty("originalError"),
() => "mapReduce shouldn't return wrapped version of the error: " + tojson(cmdOutput));
// Test that the command fails with a JS interpreter failure error when the map function
// throws.
cmdOutput = db.runCommand({
mapReduce: coll.getName(),
map: function() {
(function myFunction() {
throw new Error("Intentionally thrown inside map function");
})();
},
reduce: function(key, value) {
return Array.sum(value);
},
out: {inline: 1}
});
assert.commandFailedWithCode(cmdOutput, ErrorCodes.JSInterpreterFailure, tojson(cmdOutput));
assert(
/Intentionally thrown inside map function/.test(cmdOutput.errmsg),
() => "mapReduce didn't include the message from the exception thrown: " + tojson(cmdOutput));
assert(/myFunction@/.test(cmdOutput.errmsg),
() => "mapReduce didn't return the JavaScript stacktrace: " + tojson(cmdOutput));
assert(!cmdOutput.hasOwnProperty("stack"),
() => "mapReduce shouldn't return JavaScript stacktrace separately: " + tojson(cmdOutput));
assert(!cmdOutput.hasOwnProperty("originalError"),
() => "mapReduce shouldn't return wrapped version of the error: " + tojson(cmdOutput));
}());
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