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// @tags: [
// assumes_superuser_permissions,
// does_not_support_stepdowns,
// ]
// Tests that index validation succeeds for long keys when failIndexKeyTooLong is set to false.
// See: SERVER-22234
'use strict';
(function() {
var coll = db.longindex;
coll.drop();
function checkCollectionIsValid({valid, full}) {
var res = coll.validate(full);
assert.commandWorked(res);
assert.eq(res.valid, valid, tojson(res));
// Verify that the top level response object is consistent with the index-specific one.
if (full) {
assert.eq(
res.valid, res.indexDetails[coll.getFullName() + '.$_id_'].valid, tojson(res));
}
}
// Keys >= 1024 bytes cannot be indexed. A string represented as a BSON object has a 12 byte
// overhead. So a 1012 byte string corresponds to a 1024 byte key.
// The 12 byte overhead consists of `int32, \x02, \x00, int32` before the raw string and
// `\00, \00` after it. For details, see: http://bsonspec.org/spec.html
var longVal = 'x'.repeat(1012);
// Verify that validation succeeds when the key is < 1024 bytes.
var boundaryVal = 'x'.repeat(1011);
assert.writeOK(coll.insert({_id: boundaryVal}));
checkCollectionIsValid({valid: true, full: false});
checkCollectionIsValid({valid: true, full: true});
assert.commandWorked(db.adminCommand({setParameter: 1, failIndexKeyTooLong: false}));
assert.writeOK(coll.insert({_id: longVal}));
// Verify that validation succeeds when the failIndexKeyTooLong parameter is set to false,
// even when there are fewer index keys than documents.
checkCollectionIsValid({valid: true, full: false});
checkCollectionIsValid({valid: true, full: true});
// Change failIndexKeyTooLong back to the default value.
assert.commandWorked(db.adminCommand({setParameter: 1, failIndexKeyTooLong: true}));
// Verify that a non-full validation succeeds when the failIndexKeyTooLong parameter is
// reverted to its old value and there are mismatched index keys and documents.
// Since during the collection scan, we see the un-indexed long keys in the
// documents keys.
checkCollectionIsValid({valid: true, full: false});
// Verify that a full validation still succeeds.
checkCollectionIsValid({valid: true, full: true});
// Explicitly drop the collection to avoid failures in post-test hooks that run dbHash and
// validate commands.
coll.drop();
})();
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