我为该文件获取独占filelock，但是当我为该文件创建另一个randomaccessfile/filechannel并关闭它时，filelock被降级，我可以从另一个进程获取该文件的filelock。
以下是更好地描述情况的可重复性试验

final String path = "/tmp/test.lck";
int sleep = 20_000;

final File dbFile = new File(path);
RandomAccessFile raf = new RandomAccessFile(dbFile, "rw");
final FileLock envLock = raf.getChannel().tryLock(0, 1, false);
System.out.println("Lock acquired " + envLock);

//WE ACQUIRE THE LOCK
//CHECK WITH LSOF you will see
//lsof test.lck
//COMMAND  PID      USER   FD   TYPE DEVICE SIZE/OFF    NODE NAME
//java    5088     fefe    4uw  REG  253,2        0 8128854 test.lck

//FILE IS PROPERLY LOCKED, YOU CANNOT OBTAIN LOCK FROM ANOTHER PROCESS !!!! 
//you can run this same program from another terminal and you will not be able to get the lock , tryLock method will return null

System.out.println("going to sleep  " + sleep);
Thread.sleep(sleep);
System.out.println("after sleep  " + sleep);

final File dbFile2 = new File(path);
RandomAccessFile raf2 = new RandomAccessFile(dbFile2, "rw");
raf2.close();    
System.out.println("channel released and closed");

//AFTER THE CHANNEL IS CLOSED, YOU CAN OBTAIN LOCK FROM ANOTHER PROCESSS !!!! <--- HERE IS THE PROBLEM
//you can run this same program from another terminal and you will be able to get lock

//WE CLOSE THE CHANNEL
//CHECK WITH LSOF you will see
//YOU CHAN SEE THE FD CHANGE FROM uw to u
//    COMMAND  PID      USER   FD   TYPE DEVICE SIZE/OFF    NODE NAME
//    java    5088      fefe    4u  REG  253,2        0 8128854 test.lck

System.out.println("going to sleep  " + sleep);
Thread.sleep(5 * sleep);
System.out.println("after sleep  " + sleep);

问题是，在为我拥有filelock的同一个文件路径创建randomaccessfile之后，当我关闭randomaccessfile时，我可以从另一个进程获取该文件的锁。我认为这是一种奇怪的行为，要么是错误，要么是我遗漏了一些明显的东西。如何正确地锁定文件，在为同一个文件创建randomaccessfile之后，锁不会被释放（例如，当我想检查是否持有锁等）。我已经用jdk8和jdk11测试了它，并且具有相同的行为。我的文件系统是xfs