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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12527) Upgrade Avro dependency to 1.7.7
Date Thu, 29 Oct 2015 10:15:27 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12527?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14980197#comment-14980197

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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