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https://issues.apache.org/jira/browse/HDFS-11233?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15743894#comment-15743894
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Yiqun Lin commented on HDFS-11233:
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Thanks for the review and commit the patch.
{quote}
Hi Yiqun Lin, would you provide a patch for branch-2?
{quote}
I am preparing to provide the patch for branch-2, but I found the Jackson
version in branch-2 is 1.9.13 and there aren't
{{ObjectReader#readerFor(Class<?> type)}} and
{{ObjectWriter#writerFor(JavaType)}}.
> Fix javac warnings related to the deprecated APIs after upgrading Jackson
> -------------------------------------------------------------------------
>
> Key: HDFS-11233
> URL: https://issues.apache.org/jira/browse/HDFS-11233
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 3.0.0-alpha2
> Reporter: Yiqun Lin
> Assignee: Yiqun Lin
> Fix For: 3.0.0-alpha2
>
> Attachments: HDFS-11233.001.patch
>
>
> After HADOOP-12705, the Jackson version upgraded from 2.2.3 to 2.7.8. This
> lead many APIs which we are used in hadoop being deprecated. Since 2.5, these
> two APIs are deprecated: {{ObjectReader#readerFor(Class<?>
> type)}},{{ObjectWriter#writerWithType(JavaType
> rootType)}}(http://fasterxml.github.io/jackson-databind/javadoc/2.6/com/fasterxml/jackson/databind/ObjectMapper.html).
> According to the doc of ObjectMapper, we can use
> {{ObjectReader#readerFor(Class<?> type)}} and
> {{ObjectWriter#writerFor(JavaType)}} instead.
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