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https://issues.apache.org/jira/browse/HADOOP-8104?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13215333#comment-13215333
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Enis Soztutar commented on HADOOP-8104:
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I think we can go with the Alejandro's version of the patch which adds
remaining jackson artifacts, but we should also exclude jackson dependency from
jersey. Maven is said to be undeterministic about conflicting versions.
> Inconsistent Jackson versions
> -----------------------------
>
> Key: HADOOP-8104
> URL: https://issues.apache.org/jira/browse/HADOOP-8104
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Colin Patrick McCabe
> Assignee: Colin Patrick McCabe
> Attachments: HADOOP-7470.patch, HADOOP-8104.patch,
> dependency-tree-old.txt
>
>
> This is a maven build issue.
> Jersey 1.8 is pulling in version 1.7.1 of Jackson. Meanwhile, we are
> manually specifying that we want version 1.8 of Jackson in the POM files.
> This causes a conflict where Jackson produces unexpected results when
> serializing Map objects.
> How to reproduce: try this code:
> {quote}
> ObjectMapper mapper = new ObjectMapper();
> Map<String, Object> m = new HashMap<String, Object>();
> mapper.writeValue(new File("foo"), m);
> {quote}
> You will get an exception:
> {quote}
> Exception in thread "main" java.lang.NoSuchMethodError:
> org.codehaus.jackson.type.JavaType.isMapLikeType()Z
> at
> org.codehaus.jackson.map.ser.BasicSerializerFactory.buildContainerSerializer(BasicSerializerFactory.java:396)
> at
> org.codehaus.jackson.map.ser.BeanSerializerFactory.createSerializer(BeanSerializerFactory.java:267)
> {quote}
> Basically the inconsistent versions of various Jackson components are causing
> this NoSuchMethod error.
> As far as I know, this only occurs when serializing maps-- that's why it
> hasn't been found and fixed yet.
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