Abhishek Kothalikar created HBASE-29228:
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Summary: Add support to prevent running multiple active clusters
Key: HBASE-29228
URL: https://issues.apache.org/jira/browse/HBASE-29228
Project: HBase
Issue Type: Task
Components: master, regionserver
Reporter: Abhishek Kothalikar
Using HBase Active and Read Replica Clusters, there could be potential problem
scenarios where multiple clusters started in the active mode. For example,
|Active Cluster
*A*
hbase.global.readonly.enabled set to false
Replica Clusters
*B*
hbase.global.readonly.enabled set to true
*C*
hbase.global.readonly.enabled set to true|
In the above mentioned setup, if
* the user accidentally sets hbase.global.readonly.enabled to false on cluster
B
* user attempts restart on B then, B will start itself as an active cluster
* moreover, at this point, it cannot be deduced that which cluster is
‘original’ active cluster
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