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https://issues.apache.org/jira/browse/HADOOP-19231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17867614#comment-17867614
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ASF GitHub Bot commented on HADOOP-19231:
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pjfanning opened a new pull request, #6953:
URL: https://github.com/apache/hadoop/pull/6953
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### Description of PR
HADOOP-19231
* includes some code simplification and reuse
* also future proofs Hadoop because we can centralise the config of Jackson
### How was this patch tested?
### For code changes:
- [x] Does the title or this PR starts with the corresponding JIRA issue id
(e.g. 'HADOOP-17799. Your PR title ...')?
- [ ] Object storage: have the integration tests been executed and the
endpoint declared according to the connector-specific documentation?
- [ ] If adding new dependencies to the code, are these dependencies
licensed in a way that is compatible for inclusion under [ASF
2.0](http://www.apache.org/legal/resolved.html#category-a)?
- [ ] If applicable, have you updated the `LICENSE`, `LICENSE-binary`,
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> add JacksonUtil to centralise some code
> ---------------------------------------
>
> Key: HADOOP-19231
> URL: https://issues.apache.org/jira/browse/HADOOP-19231
> Project: Hadoop Common
> Issue Type: Task
> Reporter: PJ Fanning
> Priority: Major
>
> To future proof Hadoop against Jackson changes, it makes sense to not just
> create ObjectMappers and JsonFactories in many different places in the Hadoop
> code.
> One of the main drivers of this is
> https://www.javadoc.io/doc/com.fasterxml.jackson.core/jackson-core/latest/com/fasterxml/jackson/core/StreamReadConstraints.html
>
> Jackson 3 (not yet scheduled for release) has some fairly big API and
> behaviour changes too.
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