David created HADOOP-17681:
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Summary: Received "Permission denied" error while copying files
through NFS Gateway
Key: HADOOP-17681
URL: https://issues.apache.org/jira/browse/HADOOP-17681
Project: Hadoop Common
Issue Type: Improvement
Reporter: David
In this case, while the file was copying through NFS gateway, the below
permission error reports.
2021-03-29 05:19:13,389 INFO org.apache.hadoop.security.ShellBasedIdMapping:
Update cache now
2021-03-29 05:19:13,399 WARN org.apache.hadoop.security.ShellBasedIdMapping:
Can't find user name for uid 5999. Use default user name nobody
2021-03-29 05:19:13,412 INFO org.apache.hadoop.hdfs.nfs.nfs3.RpcProgramNfs3:
Error writing to fileId 10131842296 at offset 3254190080 and length 32768
org.apache.hadoop.security.AccessControlException: Permission denied:
user=nobody, access=EXECUTE, inode="/xxx":test:test:drwxrwx---
There is a map file exist, but never got changed.
Between Update Cache and Clear, some race conditions cause the unavailability
of the user/group mapping from cache?
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