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https://issues.apache.org/jira/browse/HADOOP-12527?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14980197#comment-14980197
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Steve Loughran commented on HADOOP-12527:
-----------------------------------------
We aren't aware (currently) of any major backwards compatibility problems with
avro versions, so this isn't an immediate veto request, the way changes to
guava are.
have you tried swapping in avro 1.7.7 into your AWS hadoop build? What happens?
> Upgrade Avro dependency to 1.7.7
> --------------------------------
>
> Key: HADOOP-12527
> URL: https://issues.apache.org/jira/browse/HADOOP-12527
> Project: Hadoop Common
> Issue Type: Improvement
> Affects Versions: 2.7.1
> Reporter: Jonathan Kelly
>
> Hadoop has depended upon Avro 1.7.4 for a couple of years now (see
> HADOOP-9672), but Apache Spark depends upon what is currently the latest
> version of Avro (1.7.7).
> This can cause issues if Spark is configured to include the full Hadoop
> classpath, as the classpath would then contain both Avro 1.7.4 and 1.7.7,
> with the 1.7.4 classes possibly winning depending on ordering. Here is an
> example of this issue:
> http://stackoverflow.com/questions/33159254/avro-error-on-aws-emr/33403111#33403111
> Would it be possible to upgrade Hadoop's Avro dependency to 1.7.7 now?
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