[HDDS-2949] mkdir : store directory entries in a separate table

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.1.0
• Component/s: Ozone Manager
• Labels: backward-incompatible pull-request-available
• Assignee: Rakesh Radhakrishnan
• Reporter: Supratim Deka
• Created: 28/Jan/20 03:48
• Updated: 02/Oct/20 08:52
• Resolved: 01/Oct/20 19:21

Description

As of HDDS-2940, all the directories from the path prefix get created as entries in the key table. as per the namespace proposal attached to HDDS-2939, directory entries need to be stored in a separate "directory" table. Files will continue to be stored in the key table, which can be thought of as the "file" table.

The advantage of a separate directory table is to make directory lookup more efficient - the entire table would fit into memory for a typical file based dataset.

Issue Links

• links to: GitHub Pull Request #912
• links to: GitHub Pull Request #1230
• links to: GitHub Pull Request #1404