Mingliang Liu created HDFS-12064:
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Summary: Reuse object mapper in HDFS
Key: HDFS-12064
URL: https://issues.apache.org/jira/browse/HDFS-12064
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Mingliang Liu
Assignee: Hanisha Koneru
Priority: Minor
Currently there are a few places that are not following the recommended pattern
of using object mapper - reuse if possible. Actually we can use
{{ObjectReader}} or {{ObjectWriter}} to replace the object mapper in some
places: they are straightforward and thread safe.
The benefit is all about performance, so in unit testing code I assume we don't
have to worry too much.
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