Arun Suresh created HADOOP-11482:
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Summary: Clients that cache instances of KMSClientProvider fail
Authentication when "addDelegationTokens()" method is called after
authentication token validity expires
Key: HADOOP-11482
URL: https://issues.apache.org/jira/browse/HADOOP-11482
Project: Hadoop Common
Issue Type: Bug
Affects Versions: 2.5.0
Reporter: Arun Suresh
Assignee: Arun Suresh
Long Living clients of HDFS (For eg. OOZIE) use cached DFSClients which in turn
use a cached KMSClientProvider to talk to KMS.
Before an MR Job is run, the job client calls the
{{DFClient.addDelegationTokens()}} method which calls {{addDelegationTokens()}}
on the {{KMSClientProvider}} to get any delegation token associated to the user.
Unfortunately, this call uses a cached
{{DelegationTokenAuthenticationURL.Token}} instance which can cause the
{{SignerSecretProvider}} implementation of the {{AuthenticationFilter}} at the
KMS Server end to fail validation. Which results in the MR job itself failing.
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