[HDFS-11712] Ozone: Reuse ObjectMapper instance to improve the performance

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: HDFS-7240
• Fix Version/s: HDFS-7240
• Component/s: ozone
• Target Version/s: HDFS-7240
• Hadoop Flags: Reviewed
• Assignee: Yiqun Lin
• Reporter: Yiqun Lin
• Created: 27/Apr/17 14:25
• Updated: 26/Apr/18 21:50
• Resolved: 03/May/17 21:32

Description

In the ozone, there are many places using ObjectMapper to do the object-json transformation. From the page of ObjectMapper (https://github.com/FasterXML/jackson-docs/wiki/Presentation:-Jackson-Performance), ObjectMapper is a heavy-weight object, it not a good bevahiour to create this instance everywhere.