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/**
* Test that applying DDL operation on secondary does not take a global X lock.
*
* @tags: [requires_replication, requires_snapshot_read]
*/
(function() {
'use strict';
const testDBName = 'test';
const readDBName = 'read';
const readCollName = 'readColl';
const testCollName = 'testColl';
const renameCollName = 'renameColl';
const rst = new ReplSetTest({name: jsTestName(), nodes: 2});
rst.startSet();
rst.initiate();
const primary = rst.getPrimary();
const secondary = rst.getSecondary();
assert.commandWorked(
primary.getDB(readDBName)
.runCommand({insert: readCollName, documents: [{x: 1}], writeConcern: {w: 2}}));
// The find will hang and holds a global IS lock.
assert.commandWorked(secondary.getDB("admin").runCommand(
{configureFailPoint: "waitInFindBeforeMakingBatch", mode: "alwaysOn"}));
const findWait = startParallelShell(function() {
db.getMongo().setSlaveOk();
assert.eq(
db.getSiblingDB('read').getCollection('readColl').find().comment('read hangs').itcount(),
1);
}, secondary.port);
assert.soon(function() {
let findOp = secondary.getDB('admin')
.aggregate([{$currentOp: {}}, {$match: {'command.comment': 'read hangs'}}])
.toArray();
return findOp.length == 1;
});
{
// Run a series of DDL commands, none of which should take the global X lock.
const testDB = primary.getDB(testDBName);
assert.commandWorked(testDB.runCommand({create: testCollName, writeConcern: {w: 2}}));
assert.commandWorked(
testDB.runCommand({collMod: testCollName, validator: {v: 1}, writeConcern: {w: 2}}));
assert.commandWorked(testDB.runCommand({
createIndexes: testCollName,
indexes: [{key: {x: 1}, name: 'x_1'}],
writeConcern: {w: 2}
}));
assert.commandWorked(
testDB.runCommand({dropIndexes: testCollName, index: 'x_1', writeConcern: {w: 2}}));
assert.commandWorked(primary.getDB('admin').runCommand({
renameCollection: testDBName + '.' + testCollName,
to: testDBName + '.' + renameCollName,
writeConcern: {w: 2}
}));
assert.commandWorked(testDB.runCommand({drop: renameCollName, writeConcern: {w: 2}}));
}
assert.commandWorked(secondary.getDB("admin").runCommand(
{configureFailPoint: "waitInFindBeforeMakingBatch", mode: "off"}));
findWait();
rst.stopSet();
})();
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