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https://issues.apache.org/jira/browse/HADOOP-12527?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14981080#comment-14981080
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Steve Loughran commented on HADOOP-12527:
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jon, don't you have your own test suites here to play with? If there's anything
that can be done with downstream tests, going beyond the core Hadoop code,
that's what's really critical to finding bugs.
Specific things I'd worry about here are HBase and Hive
> 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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