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https://issues.apache.org/jira/browse/HADOOP-12527?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15305643#comment-15305643
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Sean Owen commented on HADOOP-12527:
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I mean, I suspect it's in everyone's interest to update the dependency. I'd
also hope there are in fact no significant changes in a maintenance release,
and I don't see anyone signaling that there are problems. So, yes seems like
the thing to do if there are no reasons to believe it would be incompatible and
no evidence that it is.
> 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
> Components: build
> 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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