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From "Rahul Shrivastava (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-14348) Need HDFS Health scripts for monitoring datanode
Date Mon, 24 Apr 2017 06:11:04 GMT
Rahul Shrivastava created HADOOP-14348:
------------------------------------------

             Summary: Need  HDFS Health scripts for monitoring datanode
                 Key: HADOOP-14348
                 URL: https://issues.apache.org/jira/browse/HADOOP-14348
             Project: Hadoop Common
          Issue Type: Bug
          Components: scripts
            Reporter: Rahul Shrivastava


Sick machines cause issues, that HDFS will not automatically remediate that.
Upon a bad health,   the DN should either stop sending block reports, simply shut itself down,
or indicate the problem in some other way.
We need a script to achieve this for DN. 

MapReduceV1 had something, see https://issues.apache.org/jira/browse/MAPREDUCE-211 . Hadoop-common
moved into hadoop-yarn-project for Hadoop v2, meaning we have a solution for YARN but are
lacking what we need in HDFS.



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