Todd Lipcon created HDFS-4982:
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Summary: JournalNode should relogin from keytab before fetching
logs from other JNs
Key: HDFS-4982
URL: https://issues.apache.org/jira/browse/HDFS-4982
Project: Hadoop HDFS
Issue Type: Bug
Components: journal-node, security
Affects Versions: 3.0.0, 2.1.0-beta
Reporter: Todd Lipcon
Assignee: Todd Lipcon
We've seen an issue in a secure cluster where, after a failover, the new NN
isn't able to properly coordinate QJM recovery. The JNs fail to fetch logs from
each other due to apparently not having a Kerberos TGT. It seems that we need
to add the {{checkTGTAndReloginFromKeytab}} call prior to making the HTTP
connection, since the java HTTP stuff doesn't do an automatic relogin
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