[
https://issues.apache.org/jira/browse/HDFS-15545?focusedWorklogId=475943&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-475943
]
ASF GitHub Bot logged work on HDFS-15545:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 28/Aug/20 18:38
Start Date: 28/Aug/20 18:38
Worklog Time Spent: 10m
Work Description: ibuenros commented on pull request #2255:
URL: https://github.com/apache/hadoop/pull/2255#issuecomment-683062619
The test failures seem to all be on the server-side of HDFS. No changes in
this PR are on server side, so they should be unrelated.
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Issue Time Tracking
-------------------
Worklog Id: (was: 475943)
Time Spent: 40m (was: 0.5h)
> (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
> Priority: Major
> Labels: pull-request-available
> Time Spent: 40m
> Remaining Estimate: 0h
>
> 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.
> A simple fix would allow WebHdfsFileSystem to re-search the UGI, and if it
> finds a different token than the cached one try to use it.
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