[
https://issues.apache.org/jira/browse/SPARK-20799?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16595633#comment-16595633
]
Steve Loughran commented on SPARK-20799:
----------------------------------------
[~jzijlstra] yes, the final listing.
Note that in HADOOP-14833 I'm removing the user:secret in URI feature. It's
just too dangerous; ends up in logs, ends up in support JIRAs. Per bucket
options in hadoop-2.8; JCECKs files in 2.9+ give you much better security and
work well with things.
> Unable to infer schema for ORC/Parquet on S3N when secrets are in the URL
> -------------------------------------------------------------------------
>
> Key: SPARK-20799
> URL: https://issues.apache.org/jira/browse/SPARK-20799
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.1.1
> Environment: Hadoop 2.8.0 binaries
> Reporter: Jork Zijlstra
> Priority: Minor
>
> We are getting the following exception:
> {code}org.apache.spark.sql.AnalysisException: Unable to infer schema for ORC.
> It must be specified manually.{code}
> Combining following factors will cause it:
> - Use S3
> - Use format ORC
> - Don't apply a partitioning on de data
> - Embed AWS credentials in the path
> The problem is in the PartitioningAwareFileIndex def allFiles()
> {code}
> leafDirToChildrenFiles.get(qualifiedPath)
> .orElse { leafFiles.get(qualifiedPath).map(Array(_)) }
> .getOrElse(Array.empty)
> {code}
> leafDirToChildrenFiles uses the path WITHOUT credentials as its key while the
> qualifiedPath contains the path WITH credentials.
> So leafDirToChildrenFiles.get(qualifiedPath) doesn't find any files, so no
> data is read and the schema cannot be defined.
> Spark does output the S3xLoginHelper:90 - The Filesystem URI contains login
> details. This is insecure and may be unsupported in future., but this should
> not mean that it shouldn't work anymore.
> Workaround:
> Move the AWS credentials from the path to the SparkSession
> {code}
> SparkSession.builder
> .config("spark.hadoop.fs.s3n.awsAccessKeyId", {awsAccessKeyId})
> .config("spark.hadoop.fs.s3n.awsSecretAccessKey", {awsSecretAccessKey})
> {code}
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
