multithreading - PlanningEntity 中的多线程与 ValueRangeProvider

Question

我们尝试使用 7.9Final 引入的新“多线程增量求解”功能，只需将其添加到我们的 .xml 配置文件中即可。

似乎当我们在 PlanningEntity 中停用 ValueRangeProvider 时，它可以工作，但是当我们激活 ValueRangeProvider 时，它会中断。

• 首先：这是预期的吗？

为了解决这个问题，我们尝试用 ValueSelector 替换 ValueRangeProvider。

不幸的是，除了第 8.6.4.2 节中非常简短的介绍外，我们没有找到此功能的示例。（“过滤的实体选择”）的文档。这不足以让我们理解如何正确实现 ValueSelector。

• 这是解决问题的好方法吗？
• 如果是的话，你有任何关于我们如何实现它的指针/提示/示例吗？

提前感谢您的帮助

堆栈跟踪 ：

   "Thread-7@7390" prio=6 tid=0x28 nid=NA waiting
  java.lang.Thread.State: WAITING
      at sun.misc.Unsafe.park(Unsafe.java:-1)
      at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
      at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
      at java.util.concurrent.ArrayBlockingQueue.take(ArrayBlockingQueue.java:403)
      at org.optaplanner.core.impl.heuristic.thread.OrderByMoveIndexBlockingQueue.take(OrderByMoveIndexBlockingQueue.java:135)
      at org.optaplanner.core.impl.localsearch.decider.MultiThreadedLocalSearchDecider.forageResult(MultiThreadedLocalSearchDecider.java:187)
      at org.optaplanner.core.impl.localsearch.decider.MultiThreadedLocalSearchDecider.decideNextStep(MultiThreadedLocalSearchDecider.java:157)
      at org.optaplanner.core.impl.localsearch.DefaultLocalSearchPhase.solve(DefaultLocalSearchPhase.java:70)
      at org.optaplanner.core.impl.solver.AbstractSolver.runPhases(AbstractSolver.java:87)
      at org.optaplanner.core.impl.solver.DefaultSolver.solve(DefaultSolver.java:191)
      at com.astree.business.planning.automaticplanning.optaplanner.testbed.gui.OptaPlannerTestBedGui.lambda$toggleSolving$1(OptaPlannerTestBedGui.java:110)
      at com.astree.business.planning.automaticplanning.optaplanner.testbed.gui.OptaPlannerTestBedGui$$Lambda$120.796893540.run(Unknown Source:-1)
      at java.lang.Thread.run(Thread.java:745)

"OptaPool-2-MoveThread-3@7448" prio=5 tid=0x2b nid=NA runnable
  java.lang.Thread.State: RUNNABLE
      at com.astree.business.planning.automaticplanning.optaplanner.temporalmodel.score.TemporalIncrementalScoreCalculator.afterVariableChanged(TemporalIncrementalScoreCalculator.java:86)
      at org.optaplanner.core.impl.score.director.incremental.IncrementalScoreDirector.afterVariableChanged(IncrementalScoreDirector.java:154)
      at org.optaplanner.core.impl.heuristic.selector.move.generic.SwapMove.doMoveOnGenuineVariables(SwapMove.java:115)
      at org.optaplanner.core.impl.heuristic.move.AbstractMove.doMove(AbstractMove.java:40)
      at org.optaplanner.core.impl.heuristic.move.AbstractMove.doMove(AbstractMove.java:30)
      at org.optaplanner.core.impl.score.director.AbstractScoreDirector.doAndProcessMove(AbstractScoreDirector.java:175)
      at org.optaplanner.core.impl.heuristic.thread.MoveThreadRunner.run(MoveThreadRunner.java:142)
      at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
      at java.util.concurrent.FutureTask.run(FutureTask.java:266)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
      at java.lang.Thread.run(Thread.java:745)

标签： multithreadingoptaplanner