[HDDS-2380] Use the Table.isExist API instead of get() call while checking for presence of key.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.5.0
• Component/s: Ozone Manager
• Labels: pull-request-available
• Assignee: Aravindan Vijayan
• Reporter: Aravindan Vijayan
• Created: 29/Oct/19 18:58
• Updated: 24/Feb/20 20:56
• Resolved: 06/Nov/19 05:14

Description

Currently, when OM creates a file/directory, it checks the absence of all prefix paths of the key in its RocksDB. Since we don't care about the deserialization of the actual value, we should use the isExist API added in org.apache.hadoop.hdds.utils.db.Table which internally uses the more performant keyMayExist API of RocksDB.

Issue Links

• links to: GitHub Pull Request #102