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06-11-2019
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08-20-2019
05:08 PM
@vinith_alampall Also when you tried to start the components using "start-dfs.sh" then before that have you already copied the Hadoop Binary and Hadoop configuration files to slave nodes as well? Are these slave nodes able to resolve the master node without any issue ... please check their "/etc/hosts" file as well. Following is a blog post which you can refer just to make sure that you did not miss any step before starting the datanode. https://www.linode.com/docs/databases/hadoop/how-to-install-and-set-up-hadoop-cluster/ If you still face any issue then please share the logs specially on the dataNodes whatever logs are generated.
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08-19-2019
06:53 AM
@vinith_alampall As you are getting this error: sh: 0: Can't open ./start-yarn.sh Hence you should check couple of things: 1. Is this file existing in the current directory? # cd /PATH/TO
# ls -lart /PATH/TO/start-yarn.sh 2. What is the permission on the file? Can the current user read/execute it? # chmod a+x /PATH/TO/start-yarn.sh
# which sh
# sh -x /PATH/TO/start-yarn.sh Please replace the '/PATH/TO" with the actual path of the mentioned script. .
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06-27-2019
05:44 AM
1 Kudo
@Alampally Vinith The error indicates that your MySQL Server seems may not be running healthy. The MYSQl server is not responding to the jdbc call of the driver. Please check DB connection properties. com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server . Please try to restart your MySQL Server and then verify the mysql connectivity from oozie host. .
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07-04-2019
07:39 PM
The above question and the entire replky thread below was originally posted in the Community Help track. On Thu Jul 4 19:25 UTC 2019, a member of the HCC moderation staff moved it to the Data Processing track. The Community Help Track is intended for questions about using the HCC site itself, not technical questions about Hive or Ambari.
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06-12-2019
04:12 AM
@Jay Kumar SenSharma thank you,it worked
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