[jira] [Updated] (IMPALA-9468) Refactor Table and Db code to have a Lockable interface

["Tim Armstrong (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-9468?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tim Armstrong updated IMPALA-9468:
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    Component/s: Catalog

> Refactor Table and Db code to have a Lockable interface
> -------------------------------------------------------
>
>                 Key: IMPALA-9468
>                 URL: https://issues.apache.org/jira/browse/IMPALA-9468
>             Project: IMPALA
>          Issue Type: Task
>          Components: Catalog
>            Reporter: Vihang Karajgaonkar
>            Assignee: Vihang Karajgaonkar
>            Priority: Major
>
> In https://issues.apache.org/jira/browse/IMPALA-9357 we introduce the Db level lock as well. With that I think its cleaner to have {{Lockable}} interface which both the Db and Table implements. The interface will provide methods such as {{lock}}, {{unlock}} and {{tryLock}}. We have multiple places in the code where we do Table.getLock().lock(). Ideally, lock object of the table should be private and we should not have a public method to give access to the lock. Instead having {{table.lock(), table.unlock()}} and {{table.tryLock()}} is cleaner. Creating this JIRA to track this code change.



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