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https://issues.apache.org/jira/browse/HIVE-26555?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated HIVE-26555:
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Labels: pull-request-available (was: )
> Read-only mode
> --------------
>
> Key: HIVE-26555
> URL: https://issues.apache.org/jira/browse/HIVE-26555
> Project: Hive
> Issue Type: New Feature
> Reporter: Teddy Choi
> Assignee: Teddy Choi
> Priority: Minor
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> h1. Purpose
> In failover/fail-back scenarios, a Hive instance needs to be read-only, while
> other one is writable to keep a single source of truth.
> h1. Design
> EnforceReadOnlyHiveHook class can implement ExecuteWithHookContext interface.
> hive.exec.pre.hooks needs to have the class name to initiate an instance.
> "hive.enforce.readonly" can be configured to turn it on and off.
> h2. Allowed operations prefixes
> * USE(or SWITCHDATABASE)
> * SELECT
> * DESC
> * DESCRIBE
> * SET
> * EXPLAIN
> * ROLLBACK
> * KILL
> * ABORT
> h1. Tests
> * read_only_hook.q: USE, SHOW, DESC, DESCRIBE, EXPLAIN, SELECT
> * read_only_hook_delete_failure.q
> * read_only_hook_insert_failure.q
> * read_only_hook_update_failure.q
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