cannot delete file using ceph

[lilyzhoupeijie]

Alluxio Version: alluxio 2.8.0

Describe the bug

when delete empty dir,we found the following error.

Failed to delete /test-hhd-5/quxiyang/20210816 (UFS dir not in sync. Sync UFS, or delete with unchecked flag.) from the under file system 2021-11-22 06:56:31,838 ERROR AbstractShell - Error running rm -R /test-hhd-5/quxiyang/20210816 java.io.IOException: Failed to delete /test-hhd-5/quxiyang/20210816 (UFS dir not in sync. Sync UFS, or delete with unchecked flag.) from the under file system at alluxio.cli.fs.command.AbstractFileSystemCommand.runWildCardCmd(AbstractFileSystemCommand.java:104) at alluxio.cli.fs.command.RmCommand.run(RmCommand.java:111) at alluxio.cli.AbstractShell.run(AbstractShell.java:137) at alluxio.cli.fs.FileSystemShell.main(FileSystemShell.java:66)

To Reproduce write some files to an empty directory,and delete the files under the directory,then try to delete the directory.

Expected behavior when using ceph as under filesystem,an empty direcoty will never persist to ceph,so when the diretory is empty,it should be deleted immediately

Are you planning to fix it Already finish repairing this problem,and the code has been tested and brought online to the production environment

[JiamingMai]

In response to write some files to an empty directory,and delete the files under the directory, then try to delete the directory. you mentioned above, are you deleting files through Alluxio? Or delete files directly from UFS?