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https://issues.apache.org/jira/browse/HBASE-4052?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13060474#comment-13060474
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ramkrishna.s.vasudevan commented on HBASE-4052:
-----------------------------------------------
Hi,
Sorry for using wrong terminologies. I was aware that the Tables are only
disabled and regions are only onlined or offlined.
I would like to attach the scenarios that needs to be addressed as part of this
bug
{noformat}
If a table T1 has three regions R1, R2 and R3
We issue a disable command for T1
Scenario 1:
===========
All the regions R1, R2 and R3 are offlined and the state in zookeeper for the
table is DISABLED and then the Active master went down,
R1- Offlined
R2- Offlined T1-DISABLED
R3-Offlined
This is straight forward scenario and the handling is also simple.
Scenario:2
==========
All the regions R1, R2 and R3 are offlined but the Active Master went down when
the zookeeper state for the table was in DISABLING.
R1- Offlined
R2- Offlined T1-DISABLING
R3-Offlined
Scenario:3
========
The regions R1, R2 and R3 are not yet offlined and the Active Master went down
when the zookeeper state was DISABLING.
R1- Online
R2- Online T1-DISABLING
R3-Online
Scenario:4
========
The regions R1, R2 are offlined and R3 are not yet offlined and the Active
Master went down when the zookeeper state was DISABLING.
R1- offlined
R2- offlined T1-DISABLING
R3-Online
{noformat}
> Enabling a table after master switch is not allowing table scan. Throws
> NotServingRegionException
> --------------------------------------------------------------------------------------------------
>
> Key: HBASE-4052
> URL: https://issues.apache.org/jira/browse/HBASE-4052
> Project: HBase
> Issue Type: Bug
> Environment: Linux
> Reporter: ramkrishna.s.vasudevan
>
> Following is the scenario:
> Start RS and Active and standby masters
> Create table and insert data.
> Disable the table.
> Stop the active master and switch to the standby master.
> Now enable the table.
> Do a scan on the enabled table.
> NotServingRegionException is Thrown.
> But the same works well when we dont switch the master.
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