Konstantin Shvachko created HDFS-12975:
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Summary: Changes to the NameNode to support reads from standby
Key: HDFS-12975
URL: https://issues.apache.org/jira/browse/HDFS-12975
Project: Hadoop HDFS
Issue Type: Sub-task
Components: namenode
Reporter: Konstantin Shvachko
In order to support reads from standby NameNode needs changes to add
ObserverNode role, which turns off checkpointing and such.
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