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https://issues.apache.org/jira/browse/HBASE-8538?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13657323#comment-13657323
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rajeshbabu commented on HBASE-8538:
-----------------------------------
[~mbertozzi]
If a table is ENABLED then we are removing table state znode in 0.92 but in
0.94 setting it to ENABLED.So checking like below is correct to handle
compatibility issues with 0.92 clients(HBASE-6710 and HBASE-6268).
{code}
return state == null || state == TableState.ENABLED;
{code}
Master always sees table state as ENABLED but client is missing table existence
check that's why added table exists check in HBaseAdmin.
Do I answer your question?
Thanks.
> HBaseAdmin#isTableEnabled() should check table existence before checking zk
> state.
> ----------------------------------------------------------------------------------
>
> Key: HBASE-8538
> URL: https://issues.apache.org/jira/browse/HBASE-8538
> Project: HBase
> Issue Type: Bug
> Components: Admin
> Reporter: rajeshbabu
> Assignee: rajeshbabu
> Fix For: 0.94.8
>
> Attachments: HBASE-8538_94.patch
>
>
> To avoid compatibility issues with older versions HBaseAdmin#isTableEnabled
> returning true even if the table state is null. Its also returning true even
> a table is not present. We should confirm table existence from .META. before
> checking in zk. If table not present or deleted, then It will throw
> TableNotFoundException.
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