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From "Konstantin Shvachko (Jira)" <j...@apache.org>
Subject [jira] [Created] (HDFS-15099) [SBN Read] getBlockLocations() should throw ObserverRetryOnActiveException on an attempt to change aTime on ObserverNode
Date Wed, 08 Jan 2020 02:35:00 GMT
Konstantin Shvachko created HDFS-15099:
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             Summary: [SBN Read] getBlockLocations() should throw ObserverRetryOnActiveException
on an attempt to change aTime on ObserverNode
                 Key: HDFS-15099
                 URL: https://issues.apache.org/jira/browse/HDFS-15099
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: namenode
    Affects Versions: 2.10.0
            Reporter: Konstantin Shvachko


The precision of updating an INode's aTime while executing {{getBlockLocations()}} is 1 hour
by default. Updates cannot be handled by ObserverNode, so the call should be redirected to
Active NameNode. In order to redirect to active the ObserverNode should through {{ObserverRetryOnActiveException}}.



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