Chris Nauroth created HDFS-6666:
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Summary: Abort NameNode and DataNode startup if security is
enabled but block access token is not enabled.
Key: HDFS-6666
URL: https://issues.apache.org/jira/browse/HDFS-6666
Project: Hadoop HDFS
Issue Type: Bug
Components: datanode, namenode
Affects Versions: 3.0.0, 2.5.0
Reporter: Chris Nauroth
Priority: Minor
Currently, if security is enabled by setting hadoop.security.authentication to
kerberos, but HDFS block access tokens are disabled by setting
dfs.block.access.token.enable to false (which is the default), then the
NameNode logs an error and proceeds, and the DataNode proceeds without even
logging an error. This jira proposes that this it's invalid to turn on
security but not turn on block access tokens, and that it would be better to
fail fast and abort the daemons during startup if this happens.
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