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/**
* SERVER-20617: Tests that journaled write operations survive a kill -9 of the mongod.
*
* This test requires persistence to ensure data survives a restart.
* @tags: [requires_persistence]
*/
(function() {
'use strict';
// The following test verifies that writeConcern: {j: true} ensures that data is durable.
var dbpath = MongoRunner.dataPath + 'sync_write';
resetDbpath(dbpath);
var mongodArgs = {dbpath: dbpath, noCleanData: true};
// Start a mongod.
var conn = MongoRunner.runMongod(mongodArgs);
assert.neq(null, conn, 'mongod was unable to start up');
// Now connect to the mongod, do a journaled write and abruptly stop the server.
var testDB = conn.getDB('test');
assert.commandWorked(testDB.synced.insert({synced: true}, {writeConcern: {j: true}}));
MongoRunner.stopMongod(conn, 9, {allowedExitCode: MongoRunner.EXIT_SIGKILL});
// Restart the mongod.
conn = MongoRunner.runMongod(mongodArgs);
assert.neq(null, conn, 'mongod was unable to restart after receiving a SIGKILL');
// Check that our journaled write still is present.
testDB = conn.getDB('test');
assert.eq(1, testDB.synced.count({synced: true}), 'synced write was not found');
MongoRunner.stopMongod(conn);
})();
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