It is currently in use by another Gradle instance

FAILURE: Build failed with an exception.

* What went wrong:
Could not create service of type TaskHistoryRepository using TaskExecutionServices.createTaskHistoryRepository().
> Timeout waiting to lock task history cache (/Volumes/Mac User/macbook/lab/aws/training/gradle_student_mgmt/.gradle/4.5.1/taskHistory). It is currently in use by another Gradle instance.
  Owner PID: unknown
  Our PID: 8438
  Owner Operation: unknown
  Our operation: 
  Lock file: /Volumes/Mac User/macbook/lab/aws/training/gradle_student_mgmt/.gradle/4.5.1/taskHistory/taskHistory.lock

一个Android Studio的项目，在 Mac Android Studio import的时候报错如下。用搜到的方法解决无果（如删除锁定文件）。错误始终存在。

后尝试将该项目文件从移动硬盘移动到本地磁盘后，问题解决。经查阅确定是gradle的一个磁盘文件系统格式支持的问题。

　可能是ExFat文件系统不支持文件锁定导致。

　很多人在这里讨论了这个同样的问题。https://github.com/gradle/gradle/issues/4329

使用ExFat文件系统是为了与windows共享。目前看来没有什么好的解决方法。移动项目到本机硬盘打开吧。

It is currently in use by another Gradle instance

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