[HDDS-5821] Improve the usage of RocksDB JNI interface

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.3.0
• Component/s: Ozone Datanode
• Labels: pull-request-available
• Assignee: Ritesh Shukla
• Reporter: Ritesh Shukla
• Created: 05/Oct/21 17:33
• Updated: 26/Oct/22 17:21
• Resolved: 26/Oct/22 17:21

Description

Currently in the Datanode code the best practices as outlined by RockDB  are not followed.

1. Insure all RocksObject based objects are tracked and closed explicitly
2. Reduce sharing of RocksObjects between containers
3. Simplify the configuration of each Container's RocksDB (this is almost never modified beyond the defaults present in code)

These changes were discovered as part of debugging https://issues.apache.org/jira/browse/HDDS-5756

Issue Links

• depends upon: HDDS-6323 Close RocksObject(s)
• is related to: HDDS-6723 Close Rocks objects properly in OzoneManager
• is related to: HDDS-6722 Memory leak after updating to RocksDB 7
• links to: GitHub Pull Request #3426
• links to: GitHub Pull Request #3475