Yiqun Lin created HDFS-10560:
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Summary: Reuse ObjectMapper instance to improve the performance
Key: HDFS-10560
URL: https://issues.apache.org/jira/browse/HDFS-10560
Project: Hadoop HDFS
Issue Type: Sub-task
Components: balancer & mover
Affects Versions: HDFS-1312
Reporter: Yiqun Lin
Assignee: Yiqun Lin
In branch HDFS-1312, there are many places use {{ObjectMapper}} instances to do
the json-object transform. But {{ObjectMapper}} instance is relatively heavy,
we should reuse them as possible. And In addition, {{ObjectMapper}} is thread
safe, can see this link:http://wiki.fasterxml.com/JacksonFAQ.
Here are related issues: HDFS-9724, HDFS-9768. We can see detail info in this
issues.
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