What is the process to change the files at arbitrary locations in HDFS?

Question

I have a basic question regarding the HDFS file read. I want to know what happens, when the following steps are followed:

1. Client opens the file for reading and starts reading the file.
2. In the meantime, someone deletes the file and file moves to the trash folder

Will Step 1. succeed? I feel, since the client has already opened the file and file still exists in .trash, the client should continue to read the file.

Answer 1

HDFS does not support modifications at arbitrary offsets in the file or multiple writers but files are written by a single writer in append only format i.e. writes to a file in HDFS are always made at the end of the file.