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From "Alejandro Abdelnur (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7606) Trunk build is failing with a bunch of Avro errors in tests
Date Sat, 03 Sep 2011 00:04:09 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7606?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13096485#comment-13096485
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Alejandro Abdelnur commented on HADOOP-7606:
--------------------------------------------

Those testcases are failing because of HADOOP-7594 which introduced Jersey dependency, which
brings in a bunch of Jackson dependencies as transitive dependencies with version 1.7.1. Among
those is *jackson-core-asl*.

And, hadoop-common declares jackson-mapper-asl which uses version 1.6.9 and has a jackson-core-asl
as transitive dependency.

Because hadoop-common does not declare an explicit dependency on jackson-core-asl, and because
the transitive occurrences of jackson-core-asl (from jackson-mapper-asl and jersey) are at
the same level, the greater version wins.

And it seems that from 1.6.9 to 1.7.1 there are some API changes, we don't know if Jersey
is using those APIs.

The safest bet would be to upgrade hadoop-project/pom.xml to use Jackson 1.7.1 and tweak the
necessary API calls that changed and we are using.

*Maven tip of the day:* 'mvn dependency:tree' helps you understand how dependencies are pulled/resolved

> Trunk build is failing with a bunch of Avro errors in tests
> -----------------------------------------------------------
>
>                 Key: HADOOP-7606
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7606
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: test
>    Affects Versions: 0.24.0
>            Reporter: Aaron T. Myers
>            Assignee: Aaron T. Myers
>             Fix For: 0.24.0
>
>
> As of 2 days ago, 13 tests started failing, all with errors in Avro-related tests.

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