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https://issues.apache.org/jira/browse/HADOOP-7264?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13030097#comment-13030097
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Todd Lipcon commented on HADOOP-7264:
-------------------------------------

k, thanks for the perspective. I bring this up because we've heard from a 
number of users that, when we change the version of dependencies like thrift, 
avro, or (especially) Jackson, it hurts users who use these same libraries in 
their jobs.

> Bump avro version to at least 1.4.1
> -----------------------------------
>
>                 Key: HADOOP-7264
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7264
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: io
>    Affects Versions: 0.21.0
>            Reporter: Luke Lu
>              Labels: avro
>             Fix For: 0.23.0
>
>
> Needed by mapreduce 2.0 avro support. Maybe we could jump to Avro 1.5. There 
> is incompatible API changes from 1.3x to 1.4x (Utf8 to CharSequence in user 
> facing APIs) not sure about 1.5x though.

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