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

["Vihang Karajgaonkar (Jira)" <ji...@apache.org>]

Vihang Karajgaonkar created IMPALA-9468:
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             Summary: 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
            Reporter: Vihang Karajgaonkar
            Assignee: Vihang Karajgaonkar


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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