【Discussion】Modify HdfsSink tmp_path default configuration

[lightzhao]

hi，all
The origin of this discussion is #4558，I describe in detail.
Currently, the default tmp_path of HdfsSink is '/tmp/seatunnel', if it is not in the same namespace as the path set by the user, the rename operation will fail.
My solution is to ensure that tmp_path and path are under the same namesapce, so set tmp_path as a subdirectory of path.
Of course, the tmp path can be configured by users, but I think the default configuration should be more reasonable, because the current default configuration has potential bugs.
Let's discuss whether it is necessary to modify the default configuration of tmp_path.

[lightzhao]

Has no one discussed this issue? Hasn't everyone encountered this problem?