Github user Rucongzhang commented on the issue:
https://github.com/apache/flink/pull/3776
After resolving this problem, we find another problem, when we configure
the keytab ãprincipal, and add the HDFS delegation token, the JM ãTM also
use this token, but not keytab when communication with HDFS. When token is
expired, no one in flink to refresh the token.
But the purpose of adding this token , which is only used for yarn node
manager. We now is resolving this problem. Thanks!
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