dropdb_race.js

// test dropping a db with simultaneous commits

m = db.getMongo();
baseName = "jstests_dur_droprace";
d = db.getSisterDB(baseName);
t = d.foo;

assert(d.adminCommand({ setParameter: 1, syncdelay: 5 }).ok);

var s = 0;

var start = new Date();

for (var pass = 0; pass < 100; pass++) {
    if (pass % 2 == 0) {
        // sometimes wait for create db first, to vary the timing of things
        t.insert({}); 
        if( pass % 4 == 0 )
            d.runCommand({getLastError:1,j:1});
        else
            d.getLastError();  
    }
    t.insert({ x: 1 });
    t.insert({ x: 3 });
    t.ensureIndex({ x: 1 });
    sleep(s);
    if (pass % 37 == 0)
        d.adminCommand("closeAllDatabases");
    else if (pass % 13 == 0)
        t.drop();
    else if (pass % 17 == 0)
        t.dropIndexes();
    else
        d.dropDatabase();
    if (pass % 7 == 0)
        d.runCommand({getLastError:1,j:1});
    d.getLastError();
    s = (s + 1) % 25;
    //print(pass);
    if ((new Date()) - start > 60000) {
        print("stopping early");    
        break;
    }
}