wenhao created HBASE-28950:
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Summary: After modifying the 'zookeeper.znode.parent' parameter
and restarting HBase, HBase is unable to complete its initialization.
Key: HBASE-28950
URL: https://issues.apache.org/jira/browse/HBASE-28950
Project: HBase
Issue Type: Bug
Components: master
Affects Versions: 2.4.17
Environment: The following describes the situation after I modified
the znode and restarted HBase. The data in the hbase:meta table was lost, the
number of regions displayed on the Master UI remained at 0, and the meta table
could not come online. Moreover, there were no obvious error messages found in
the logs of the Master or Region Servers.
Reporter: wenhao
Attachments: hbase-hbase-master-manager210.bigdata.com.log,
hbase-hbase-regionserver-manager210.bigdata.com.log,
hbase-hbase-regionserver-master208.bigdata.com.log,
hbase-hbase-regionserver-worker209.bigdata.com.log, hbase_meta.png,
master-ui-home.png, master-ui-procedure.png
In my tests, after modifying the 'zookeeper.znode.parent' parameter and
restarting HBase, HBase is unable to complete its initialization with versions
2.3.* and 2.4.*, but this issue does not occur with version 2.2.*.
If the Zookeeper cluster crashes and the data stored in zk cannot be recovered,
and only a new ZK cluster can be set up, the HBase cluster will never be able
to return to a normal state. This problem is particularly severe under certain
failure scenarios.
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