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path: root/jstests/noPassthroughWithMongod/index_retry.js
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// Check index rebuild when MongoDB is killed
(function() {
    'use strict';
    var baseName = 'index_retry';
    var dbpath = MongoRunner.dataPath + baseName;
    var ports = allocatePorts(1);
    var conn = MongoRunner.runMongod({
        dbpath: dbpath,
        port: ports[0],
        journal: ''});

    var test = conn.getDB("test");

    var name = 'jstests_slownightly_' + baseName;
    var t = test.getCollection(name);
    t.drop();

    // Insert a large number of documents, enough to ensure that an index build on these documents
    // can be interrupted before complete.
    var bulk = t.initializeUnorderedBulkOp();
    for (var i = 0; i < 5e5; ++i) {
        bulk.insert({ a: i });
        if (i % 10000 == 0) {
            print("i: " + i);
        }
    }
    assert.writeOK(bulk.execute());

    function debug(x) {
        printjson(x);
    }

    /**
     * @return if there's a current running index build
     */
    function indexBuildInProgress() {
        var inprog = test.currentOp().inprog;
        debug(inprog);
        var indexBuildOpId = -1;
        inprog.forEach(
            function( op ) {
                // Identify the index build as a createIndexes command.
                // It is assumed that no other clients are concurrently
                // accessing the 'test' database.
                if ( op.op == 'query' && 'createIndexes' in op.query ) {
                    debug(op.opid);
                    var idxSpec = op.query.indexes[0];
                    // SERVER-4295 Make sure the index details are there
                    // we can't assert these things, since there is a race in reporting
                    // but we won't count if they aren't
                    if ( "a_1" == idxSpec.name &&
                         1 == idxSpec.key.a &&
                         idxSpec.background &&
                         op.progress &&
                         (op.progress.done / op.progress.total) > 0.20) {
                        indexBuildOpId = op.opid;
                    }
                }
            }
        );
        return indexBuildOpId != -1;
    }

    function abortDuringIndexBuild(options) {
        var createIdx = startParallelShell(
            'db.' + name + '.createIndex({ a: 1 }, { background: true });',
            ports[0]);

        // Wait for the index build to start.
        var times = 0;
        assert.soon(
            function() {
                return indexBuildInProgress() && times++ >= 2;
            }
        );

        print("killing the mongod");
        MongoRunner.stopMongod(ports[0], /* signal */ 9);
        createIdx();
    }

    abortDuringIndexBuild();

    conn = MongoRunner.runMongod({
        dbpath: dbpath,
        port: ports[0],
        journal: '',
        restart: true});
    test = conn.getDB("test");
    t = test.getCollection(name);

    assert.eq({a: 42}, t.find({a: 42}, {_id: 0}).hint({a: 1}).next(),
              'index {a: 1} was rebuilt on startup');

    var indexes = t.getIndexes();
    assert.eq(2, indexes.length,
              'unexpected number of indexes in listIndexes result: ' + tojson(indexes));

    print("Index built");

    MongoRunner.stopMongod(ports[0]);
    print("SUCCESS!");
}());