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Posted to common-issues@hadoop.apache.org by "Colin Patrick McCabe (Updated) (JIRA)" <ji...@apache.org> on 2012/02/23 02:25:49 UTC
[jira] [Updated] (HADOOP-8104) Inconsistent Jackson versions
[ https://issues.apache.org/jira/browse/HADOOP-8104?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Colin Patrick McCabe updated HADOOP-8104:
-----------------------------------------
Description:
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.
was:
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:
<code>
ObjectMapper mapper = new ObjectMapper();
Map<String, Object> m = new HashMap<String, Object>();
mapper.writeValue(new File("foo"), m);
</code>
You will get an exception:
<code>
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)
</code>
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.
> 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
>
> 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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