Issac Buenrostro created HDFS-15545:
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Summary: (S)Webhdfs will not use updated delegation tokens
available in the ugi after the old ones expire
Key: HDFS-15545
URL: https://issues.apache.org/jira/browse/HDFS-15545
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Issac Buenrostro
WebHdfsFileSystem can select a delegation token to use from the current user
UGI. The token selection is sticky, and WebHdfsFileSystem will re-use it every
time without searching the UGI again.
If the previous token expires, WebHdfsFileSystem will catch the exception and
attempt to get a new token. However, the mechanism to get a new token bypasses
searching for one on the UGI, so even if there is external logic that has
retrieved a new token, it is not possible to make the FileSystem use the new,
valid token, rendering the FileSystem object unusable.
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