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// Test dropping an index that is being used by an agg pipeline.
var coll = db.server14969;
var docsPerBatch = 3;
coll.drop();
// Initialize collection with eight 1M documents, and index on field "a".
var longString = new Array(1024*1024).join('x');
for (var i = 0; i < 100; ++i) {
assert.writeOK(coll.insert({a: 1, bigField: longString}));
}
assert.commandWorked(coll.ensureIndex({a: 1}));
// Create pipeline that uses index "a", with a small initial batch size.
var cursor = coll.aggregate([{$match: {a: 1}}], {cursor: {batchSize: docsPerBatch}});
for (var i = 0; i < docsPerBatch; ++i) {
assert(cursor.hasNext());
assert.eq(1, cursor.next().a);
}
// Drop index "a".
assert.commandWorked(coll.dropIndex({a:1}));
// Issue a getmore against agg cursor. Note that it is not defined whether the server continues to
// generate further results for the cursor.
try {
cursor.hasNext();
cursor.next();
}
catch (e) {}
// Verify that the server hasn't crashed.
assert.commandWorked(db.adminCommand({ping: 1}));
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