Lin Yiqun created HDFS-9768:
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Summary: Reuse objectMapper instance in HDFS to improve the
performance
Key: HDFS-9768
URL: https://issues.apache.org/jira/browse/HDFS-9768
Project: Hadoop HDFS
Issue Type: Improvement
Components: performance
Affects Versions: 2.7.1
Reporter: Lin Yiqun
Assignee: Lin Yiqun
In HDFS-9724, it have reused the ObjectMapper instance to improve the
performance in {{WebHDFS}}. But in other places, it still using ObjectMapper by
{{new ObjectMapper()}}. We probably need a comprehensive review across the
whole codebase to look for this pattern and modify them. In MAPREDUCE-6626,
YARN-4668, these jiras also work for this.
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