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Editor to share with you about hbase startup error master.TableNamespaceManager: what to do with Namespace table not found? I hope you will get something after reading this article. Let's discuss it together.

Cause of error:

I have installed HBase before. Then when you delete and reinstall, start hbase and its master fails.

Check the xxxx.out log or web interface of the / var/log/hbase directory with the following error:

Failed to become active master,org.apache.hadoop.hbase.TableExistsException:hbase:namespace.

According to the above errors, we can clearly know that when starting Hbase, the data of the previously installed version of HBase still exists.

Therefore, a reinstalled HBase will report an exception to TableExistsException. Causes HBase to fail to start.

The data of the previous version of HBase is stored in zookeeper, so you need to go to the client of zookeeper to view it.

The solution is to enter zk and delete the residual directory.

After reading this article, I believe you have a certain understanding of "hbase startup error master.TableNamespaceManager: what to do with Namespace table not found". If you want to know more about it, you are welcome to follow the industry information channel. Thank you for reading!

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