Max  Xie created HDFS-16861:
-------------------------------

             Summary: RBF. Truncate API always fails when dirs use AllResolver 
oder on Router  
                 Key: HDFS-16861
                 URL: https://issues.apache.org/jira/browse/HDFS-16861
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: rbf
    Affects Versions: 3.4.0
            Reporter: Max  Xie
         Attachments: image-2022-12-05-17-35-19-841.png

# prepare a directory in a HASH_ALL/SPACE/RANDOM mount point.
 # put  a test file with 1024 bytes  to this directory
 # truncate the file with 100 new length  and this op will fail and throw  a 
exception that the file does not exist.

 

After dig it, we should ignore the result of Truncate API in 
RouterClientProtocol because

Truncate can return true/false, so don't expect a result.

After fix it , the code is 

!image-2022-12-05-17-35-19-841.png!

 



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