Hadoop daemons should not start up if the ownership/permissions on the
directories used at runtime are misconfigured
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Key: HADOOP-6566
URL: https://issues.apache.org/jira/browse/HADOOP-6566
Project: Hadoop Common
Issue Type: New Feature
Components: security
Reporter: Devaraj Das
Fix For: 0.22.0
The Hadoop daemons (like datanode, namenode) should refuse to start up if the
ownership/permissions are misconfigured or they are not as expected. For
example, the local directory where the filesystem image is stored should be
owned by the user running the namenode process and should be only readable by
that user. We can provide this feature in common and HDFS and MapReduce can use
the same.
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