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https://issues.apache.org/jira/browse/SPARK-7481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15177623#comment-15177623
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Steve Loughran commented on SPARK-7481:
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Hadoop 2.6 added S3a, which we put into a new hadoop-tools/hadoop-aws JAR,
along with a dependency on sun's {{aws-java}} SDK. Someone other than myself
went and moved the existing S3n classes into the same JAR. If'd I'd seen that,
i'd have -1'd it, but I didn't notice until 2.6 shipped.
as stated, I wouldn't use S3a in Hadoop 2.6.x. HADOOP-11571 contains the
reasons. It wasn't until Hadoop 2.7 that it became ready for serious use.
Both come in hadoop-aws; s3a needs an amazon JAR, which must be matched
precisely with the version used in the hadoop library.
> Add Hadoop 2.6+ profile to pull in object store FS accessors
> ------------------------------------------------------------
>
> Key: SPARK-7481
> URL: https://issues.apache.org/jira/browse/SPARK-7481
> Project: Spark
> Issue Type: Improvement
> Components: Build
> Affects Versions: 1.3.1
> Reporter: Steve Loughran
>
> To keep the s3n classpath right, to add s3a, swift & azure, the dependencies
> of spark in a 2.6+ profile need to add the relevant object store packages
> (hadoop-aws, hadoop-openstack, hadoop-azure)
> this adds more stuff to the client bundle, but will mean a single spark
> package can talk to all of the stores.
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