Andrew Craig created AVRO-4042:
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Summary: Reuse ObjectMapper in SchemaBuilder & JacksonUtils
Key: AVRO-4042
URL: https://issues.apache.org/jira/browse/AVRO-4042
Project: Apache Avro
Issue Type: Improvement
Components: java
Affects Versions: 1.11.3
Reporter: Andrew Craig
Currently, calling `JacksonUtils.toJsonNode(obj)`,
`JacksonUtils.objectToMap(obj)` or `SchemaBuilder.toJsonNode(obj)` recreate at
least one new instance of Jackson ObjectMapper each time.
ObjectMapper is an expensive object to create, but is immutable and
thread-safe. We can see in various other locations within Avro that we reuse
the same object, and avoid recreation.
We can perform the same reuse here - and only create the ObjectMapper once.
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