text: // Check index rebuild when MongoDB is killed.
  //
  // This test requires persistence because it assumes data/indices will survive a restart.
  // This test requires journaling because the information that an index build was started
  // must be made durable when the process aborts.
  // @tags: [requires_persistence, requires_journaling]
  (function() {
      'use strict';
      var baseName = 'index_retry';
      var dbpath = MongoRunner.dataPath + baseName;
  
      var conn = MongoRunner.runMongod({dbpath: dbpath});
      assert.neq(null, conn, 'failed to start mongod');
  
      var test = conn.getDB("test");
  
      var name = 'jstests_slownightly_' + baseName;
      var t = test.getCollection(name);
      t.drop();
  
      var bulk = t.initializeUnorderedBulkOp();
      for (var i = 0; i < 100; ++i) {
          bulk.insert({a: i});
      }
  
      // Make sure the documents are journaled
      assert.writeOK(bulk.execute({j: true}));
  
      assert.eq(100, t.count(), 'unexpected number of documents after bulk insert.');
  
      function abortDuringIndexBuild() {
          var createIdx = startParallelShell(function() {
              var coll = db.getSiblingDB('test').getCollection('jstests_slownightly_index_retry');
  
              // Fail point will handle journal flushing and killing the mongod
              assert.commandWorked(db.adminCommand(
                  {configureFailPoint: 'crashAfterStartingIndexBuild', mode: 'alwaysOn'}));
              coll.createIndex({a: 1}, {background: true});
          }, conn.port);
  
          var exitCode = createIdx({checkExitSuccess: false});
          assert.neq(0, exitCode, "expected shell to exit abnormally due to mongod being terminated");
      }
  
      abortDuringIndexBuild();
  
      assert.eq(waitProgram(conn.pid),
                MongoRunner.EXIT_TEST,
                "mongod should have crashed due to the 'crashAfterStartingIndexBuild' " +
                    "failpoint being set.");
  
      conn = MongoRunner.runMongod({dbpath: dbpath, restart: true});
      test = conn.getDB("test");
      t = test.getCollection(name);
  
      assert.eq(100,
                t.find({}, {_id: 0, a: 1}).hint({a: 1}).itcount(),
                'index {a: 1} was expected to be rebuilt on startup');
      var indexes = t.getIndexes();
      assert.eq(2,
                indexes.length,
                'unexpected number of indexes in listIndexes result: ' + tojson(indexes));
  
      MongoRunner.stopMongod(conn);
  }());
  