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https://issues.apache.org/jira/browse/SPARK-21702?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16127062#comment-16127062
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Steve Loughran commented on SPARK-21702:
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ps, you shouldn't need to set the s3a.impl field; that's handed automatically
> Structured Streaming S3A SSE Encryption Not Applied when PartitionBy Used
> -------------------------------------------------------------------------
>
> Key: SPARK-21702
> URL: https://issues.apache.org/jira/browse/SPARK-21702
> Project: Spark
> Issue Type: Bug
> Components: Structured Streaming
> Affects Versions: 2.2.0
> Environment: Hadoop 2.7.3: AWS SDK 1.7.4
> Hadoop 2.8.1: AWS SDK 1.10.6
> Reporter: George Pongracz
> Priority: Minor
> Labels: security
>
> Settings:
> .config("spark.hadoop.fs.s3a.impl",
> "org.apache.hadoop.fs.s3a.S3AFileSystem")
> .config("spark.hadoop.fs.s3a.server-side-encryption-algorithm",
> "AES256")
> When writing to an S3 sink from structured streaming the files are being
> encrypted using AES-256
> When introducing a "PartitionBy" the output data files are unencrypted.
> All other supporting files, metadata are encrypted
> Suspect write to temp is encrypted and move/rename is not applying the SSE.
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