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Editor to share with you cloudera installation, operation exception information example analysis, I believe that most people do not know much about it, so share this article for your reference, I hope you will learn a lot after reading this article, let's go to know it!

Exception resolution

1 、 401 Unauthorized: ERROR Failed to connect to newly launched supervisor. Agent will exit

This is caused by starting Agent on the primary node and then transferring Agent scp to other nodes. When Agent is started for the first time, it will generate a uuid with a path of / opt/cm-XXX/lib/cloudera-scm-agent/uuid, so that the uuid of Agent on each machine is the same, and disorder will occur.

Solution:

Delete all files in the / opt/XXXX/lib/cloudera-scm-agent/ directory.

Empty the primary node CM database.

2 、 java.io.IOException: Incompatible clusterIDs in / dfs/dn

Check your hdfs-site.xml file to see where dfs.data.dir is pointing to and delete that folder

And then restart the datanode daemon on the machine

Delete / dfs/dn data under linux

3 、 cloudera java.io.IOException: No space left on device

Because hadoop doesn't have enough data space.

4 、 cloudera org.apache.hadoop.hbase.TableExistsException: hbase:namespace

Delete the hbase under the zookeeper directory

The above is all the contents of the article "sample Analysis of cloudera installation and Operation exception Information". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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