我有使用Slick的Play 2.5应用程序。 Play应用程序安排了很少的Quartz作业，并在应用程序中运行。 Quartz Job使用slick在数据库中插入/更新数据。 Quartz作业因以下异常而失败。
[error] o.q.c.ErrorLogger - Job (8a3a3ec7f96a2d1aceb2dc96c5dddaed.becdc8372f54d501222a2ca94c264ff0 threw an exception.
org.quartz.SchedulerException: Job threw an unhandled exception.
at org.quartz.core.JobRunShell.run(JobRunShell.java:213)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573)
Caused by: java.util.concurrent.RejectedExecutionException: Task slick.backend.DatabaseComponent$DatabaseDef$$anon$2@5fae8abe rejected from java.util.concurrent.ThreadPoolExecutor@39c55f20[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 268]
at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2047)
at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:823)
at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1369)
at scala.concurrent.impl.ExecutionContextImpl$$anon$1.execute(ExecutionContextImpl.scala:136)
at slick.backend.DatabaseComponent$DatabaseDef$class.runSynchronousDatabaseAction(DatabaseComponent.scala:230)
at slick.jdbc.JdbcBackend$DatabaseDef.runSynchronousDatabaseAction(JdbcBackend.scala:38)
at slick.backend.DatabaseComponent$DatabaseDef$class.runInContext(DatabaseComponent.scala:207)
at slick.jdbc.JdbcBackend$DatabaseDef.runInContext(JdbcBackend.scala:38)
at slick.backend.DatabaseComponent$DatabaseDef$class.runInternal(DatabaseComponent.scala:75)
at slick.jdbc.JdbcBackend$DatabaseDef.runInternal(JdbcBackend.scala:38)
[error] o.q.c.ErrorLogger - Job (8a3a3ec7f96a2d1aceb2dc96c5dddaed.becdc8372f54d501222a2ca94c264ff0 threw an exception.
org.quartz.SchedulerException: Job threw an unhandled exception.
at org.quartz.core.JobRunShell.run(JobRunShell.java:213)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573)
Caused by: java.util.concurrent.RejectedExecutionException: Task slick.backend.DatabaseComponent$DatabaseDef$$anon$2@5fae8abe rejected from java.util.concurrent.ThreadPoolExecutor@39c55f20[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 268]
at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2047)
at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:823)
at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1369)
at scala.concurrent.impl.ExecutionContextImpl$$anon$1.execute(ExecutionContextImpl.scala:136)
at slick.backend.DatabaseComponent$DatabaseDef$class.runSynchronousDatabaseAction(DatabaseComponent.scala:230)
at slick.jdbc.JdbcBackend$DatabaseDef.runSynchronousDatabaseAction(JdbcBackend.scala:38)
at slick.backend.DatabaseComponent$DatabaseDef$class.runInContext(DatabaseComponent.scala:207)
at slick.jdbc.JdbcBackend$DatabaseDef.runInContext(JdbcBackend.scala:38)
at slick.backend.DatabaseComponent$DatabaseDef$class.runInternal(DatabaseComponent.scala:75)
at slick.jdbc.JdbcBackend$DatabaseDef.runInternal(JdbcBackend.scala:38)
当在Quartz作业之外进行光滑调用但仅在Quartz作业内部时，才会发生此故障。一些初始的几个Quartz作业成功，但在几次运行后，抛出上述错误。
导致此问题的原因是什么以及堆栈跟踪表示池大小为零的原因如下所示？
Caused by: java.util.concurrent.RejectedExecutionException: Task slick.backend.DatabaseComponent$DatabaseDef$$anon$2@5fae8abe rejected from java.util.concurrent.ThreadPoolExecutor@39c55f20[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 268]
以下是Slick和Quartz设置
slick.dbs.default.driver="slick.driver.MySQLDriver$"
slick.dbs.default.db.driver="com.mysql.jdbc.Driver"
slick.dbs.default.db.url="jdbc:mysql://mysql-server:3306/database"
slick.dbs.default.db.user=username
slick.dbs.default.db.password=password
slick.dbs.default.db.queueSize = 10000
slick.dbs.default.db.connectionTimeout=5s
// Quartz Settings
scheduler = {
org.quartz.scheduler.instanceId = AUTO
org.quartz.threadPool.class = "org.quartz.simpl.SimpleThreadPool"
org.quartz.threadPool.threadCount = 100
org.quartz.threadPool.threadPriority = 5
org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread = true
org.quartz.dataSource.quartzDataSource.driver=com.mysql.jdbc.Driver
org.quartz.dataSource.quartzDataSource.URL="jdbc:mysql://mysql-server:3306/database"
org.quartz.dataSource.quartzDataSource.user=username
org.quartz.dataSource.quartzDataSource.password=password
org.quartz.jobStore.misfireThreshold = 60000
org.quartz.jobStore.class = "org.quartz.impl.jdbcjobstore.JobStoreTX"
org.quartz.jobStore.driverDelegateClass = "org.quartz.impl.jdbcjobstore.StdJDBCDelegate"
org.quartz.jobStore.dataSource = quartzDataSource
org.quartz.jobStore.tablePrefix = QRTZ_
org.quartz.jobStore.isClustered = true
org.quartz.jobStore.useProperties = true
org.quartz.dataSource.quartzDataSource.maxConnections=3
}