jstests/aggregation/bugs/server17224.js


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// SERVER-17224 An aggregation result with exactly the right size could crash the server rather than
//              returning an error.
(function() {
'use strict';

var t = db.server17224;
t.drop();

// first 63MB
for (var i = 0; i < 63; i++) {
    t.insert({a: new Array(1024 * 1024 + 1).join('a')});
}

// the remaining ~1MB with room for field names and other overhead
t.insert({a: new Array(1024 * 1024 - 1105).join('a')});

// do not use cursor form, since it has a different workaroud for this issue.
assert.commandFailed(db.runCommand({
    aggregate: t.getName(),
    pipeline: [{$match: {}}, {$group: {_id: null, arr: {$push: {a: '$a'}}}}]
}));

// Make sure the server is still up.
assert.commandWorked(db.runCommand('ping'));
}());