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https://issues.apache.org/jira/browse/HADOOP-7264?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13030082#comment-13030082
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Luke Lu commented on HADOOP-7264:
---------------------------------
maven shade and jarjar doesn't help in this case for mr2 (it's in the common
code in job history), as both client and server needs to be on at least 1.4.1,
sans an OSGi containment in the job history server, which would be
over-engineering at this point. maven shade/jarjar would be helpful for future
client libraries.
BTW, we initially actually used maven shade for various servers, but had to
remove it as the added processing time, the annoying warnings and the resulting
bulk really don't worth the trouble.
> 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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