jstests/sharding/multi_coll_drop.js


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// Tests the dropping and re-adding of a collection
(function() {

    var st = new ShardingTest({name: "multidrop", shards: 1, mongos: 2});

    var mA = st.s0;
    var mB = st.s1;

    var coll = mA.getCollection('multidrop.coll');
    var collB = mB.getCollection('multidrop.coll');

    jsTestLog("Shard and split collection...");

    var admin = mA.getDB("admin");
    assert.commandWorked(admin.runCommand({enableSharding: coll.getDB() + ""}));
    assert.commandWorked(admin.runCommand({shardCollection: coll + "", key: {_id: 1}}));

    for (var i = -100; i < 100; i++) {
        assert.commandWorked(admin.runCommand({split: coll + "", middle: {_id: i}}));
    }

    jsTestLog("Create versioned connection for each mongos...");

    assert.eq(0, coll.find().itcount());
    assert.eq(0, collB.find().itcount());

    jsTestLog("Dropping sharded collection...");
    assert(coll.drop());

    jsTestLog("Recreating collection...");

    assert.commandWorked(admin.runCommand({shardCollection: coll + "", key: {_id: 1}}));
    for (var i = -10; i < 10; i++) {
        assert.commandWorked(admin.runCommand({split: coll + "", middle: {_id: i}}));
    }

    jsTestLog("Retrying connections...");

    assert.eq(0, coll.find().itcount());
    assert.eq(0, collB.find().itcount());

    st.stop();

})();