Ravindra Babu created HDFS-8914:
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Summary: Documentation conflict regarding fail-over of Namenode
Key: HDFS-8914
URL: https://issues.apache.org/jira/browse/HDFS-8914
Project: Hadoop HDFS
Issue Type: Bug
Components: documentation
Affects Versions: 2.7.1
Environment: Documentation page in live
Reporter: Ravindra Babu
Priority: Trivial
Please refer to these two links and correct one of them.
http://hadoop.apache.org/docs/r2.7.1/hadoop-project-dist/hadoop-hdfs/HdfsDesign.html
The NameNode machine is a single point of failure for an HDFS cluster. If the
NameNode machine fails, manual intervention is necessary. Currently, automatic
restart and failover of the NameNode software to another machine is not
supported.
http://hadoop.apache.org/docs/r2.7.1/hadoop-project-dist/hadoop-hdfs/HDFSHighAvailabilityWithQJM.html
The HDFS High Availability feature addresses the above problems by providing
the option of running two redundant NameNodes in the same cluster in an
Active/Passive configuration with a hot standby. This allows a fast failover to
a new NameNode in the case that a machine crashes, or a graceful
administrator-initiated failover for the purpose of planned maintenance.
Please keep one right version regarding failover statements.
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