scala – 重新创建Squeryl内存数据库时内存泄漏

我正在写一个简单的 Scala& Squeryl应用程序.出于测试目的,每次在sbt中运行“test”时,都会创建一个内存中的H2 db并填充测试数据.每次运行后,我都可以看到任务管理器中java.exe(其中sbt正在运行)的内存使用量增加,直到4或5次运行后,它与OutOfMemoryError崩溃.我错过了明确释放H2或Squeryl使用的内存的东西吗？到现在为止,我只使用Session.create,然后使用Persistence.create.以下是我的代码的摘录：

object Persistence extends Schema {
  val documents = table[IncomeEntity]
  val positions = table[Position]
  val documentToPositions = oneToManyRelation(documents,positions).via(_.id === _.id_income)
}

class PersistenceTests extends FunSuite with BeforeAndAfterAll {

  override protected def beforeAll() {
    Class.forName("org.h2.Driver")
    SessionFactory.concreteFactory = Some(
      () => Session.create(DriverManager.getConnection("jdbc:h2:mem:test"),new H2Adapter)
    )
  }

  test("DDL") {
    transaction {
      Persistence.create
      assert(Persistence.documents.size == 0)
      assert(Persistence.positions.size == 0)
    }
  } 

  test("Insert") {
    transaction {
      Persistence.create
      (1 to 100) map { _ => IncomeMapper.save(new Income) }
      assert(Persistence.documents.size == 100)
    }
  }
}

我收到的消息简单如下：

[info] PersistenceTests:
sbt appears to be exiting abnormally.
  The log file for this session is at C:UsersOlegAppDataLocalTempsbt7320472784033855835.log
java.lang.OutOfMemoryError: PermGen space
Error during sbt execution: java.lang.OutOfMemoryError: PermGen space