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Data access

Table of Contents​

I cannot access the files written to an S3 bucket in another account​

When you write an object to an S3 bucket in another account, the Conveyor account will remain the owner of this object. Take the following steps to resolve this:

  1. Set the S3 Object Ownership setting to: Bucket owner preferred
  2. When you put files on S3, pass the acl: bucket-owner-full-control

boto3​

s3.put_object(
    Bucket=bucketname,
    Key=filename,
    Body=content_bytes,
    ACL="bucket-owner-full-control"
)

Spark template​

private val defaultConfiguration: Map[String, String] = Map(
    "fs.s3.impl" -> "org.apache.hadoop.fs.s3a.S3AFileSystem",
    "fs.s3a.canned.acl" -> "BucketOwnerFullControl",
    "spark.serializer" -> "org.apache.spark.serializer.KryoSerializer",
    "spark.sql.sources.partitionOverwriteMode" -> "dynamic"
  )

PySpark template​

spark_builder.config("spark.sql.sources.partitionOverwriteMode", "dynamic")
spark_builder.config("fs.s3.impl", "org.apache.hadoop.fs.s3a.S3AFileSystem")
spark_builder.config("fs.s3a.canned.acl", "BucketOwnerFullControl")