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source: trunk/HeuristicLab.Services.Hive.JanitorService/3.3/JanitorService.cs @ 18047

Last change on this file since 18047 was 17574, checked in by jkarder, 4 years ago

#3062: overhauled statistics generation and cleanup

  • switched to a single thread for database cleanup and statistics generation (executed sequentially)
  • switched to preemptive deletion of items that are in status DeletionPending (for jobs: statelogs, taskdata, tasks)
  • added code that aborts tasks whose jobs have already been marked for deletion
  • added method UseTransactionAndSubmit in addition to UseTransaction in PersistenceManager
  • updated DAO methods and introduced more bare metal sql
  • introduced DAO methods for batch deletion
  • fixed usage of enum values in DAO sql queries
  • deleted unnecessary triggers tr_JobDeleteCascade and tr_TaskDeleteCascade in Prepare Hive Database.sql
  • changed scheduling for less interference with janitor and other heartbeats
    • increased scheduling patience from 20 to 70 seconds (to wait longer to get the mutex for scheduling)
    • changed signature of ITaskScheduler.Schedule
    • added base class for TaskSchedulers and moved assignment of tasks to slaves into it
    • changed RoundRobinTaskScheduler to use bare metal sql
  • made MessageContainer a storable type (leftover)
  • updated HiveJanitorServiceInstaller.nsi
File size: 1.5 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System.ServiceProcess;
23using System.Threading;
24
25namespace HeuristicLab.Services.Hive.JanitorService {
26  public partial class JanitorService : ServiceBase {
27    private HiveJanitor janitor;
28    private Thread janitorThread;
29
30    public JanitorService() {
31      InitializeComponent();
32    }
33
34    protected override void OnStart(string[] args) {
35      janitor = new HiveJanitor();
36
37      janitorThread = new Thread(janitor.Run) {
38        IsBackground = true
39      };
40
41      janitorThread.Start();
42    }
43
44    protected override void OnStop() {
45      janitor.StopJanitor();
46      janitorThread.Join();
47    }
48  }
49}
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