Github user jerryshao commented on the issue:
https://github.com/apache/spark/pull/14065
Hi @tgravescs , thanks a lot for your comments. What I did to test is to
run on security cluster with hive, hbase and hdfs installed and kerberized:
1. Verify credentials can be obtained in yarn/client properly.
2. Verify if principal and keytab is specified, credentials can be obtained
in yarn/client correctly.
3. Verify if principal and keytab is specified, credentials can be renewed
and updated in a specific time. I changed the renewal and update parameter from
75%, 80% to 1% and 1.2% to expect fast credential renewal. To see if:
* Credentials can be renewed in AM in a specific time.
* Renewed credentials can be written into hdfs with proper name:
<credential>-<timestamp>-<integer suffix>.
* Credentials can be updated in driver and executors correctly.
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