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Unable to copy data from HDFS to S3

Unable to copy data from HDFS to S3

Explorer

I am trying to copy data from hdfs to s3 While using the distcp command, the command works for individual files.

 

So, hadoop distcp /user/username/file.txt s3a://xxxxx works fine

 

But when I try to copy the entire director structure it fails to create the directory giving the error: Error: java.io.IOException: mkdir failed for s3a://bucket****/ Error Code: 403 Forbidden; Request ID: 447400E9C5995ED9), S3 Extended Request ID: T0hsw+XaBMrkMUhDcJBKGIRtSF58dKedZdCH2qC32v9uVkwR94SGiI7Xxe8lqaFaDyjwS3oCpkg=

 

Even if I do a simple mkdir command in s3 it fails giving the same 403 forbidden issue.

So not sure what is the root cause.

 

I am able to copy the files but not able to create directories.

3 REPLIES 3

Re: Unable to copy data from HDFS to S3

Cloudera Employee

You may not have all the permissions you need on the bucket.  Make sure you have "s3:ListBucket" on resource "arn:aws:s3:::<bucket-name>", as well as "s3:PutObject", "s3:GetObject", "s3:DeleteObject", "s3:PutObjectAcl" on resource "arn:aws:s3:::<bucket-name>/*"

 

You probably also want to add the permissions for creating and deleting multipart uploads. I'd add priviliges for the operations mentioned in the multipart upload docs as well.

Re: Unable to copy data from HDFS to S3

New Contributor

How did you copy hdfs files to s3 ? using hadoop Distcp ?

can u please tell me what configuration did you do  ? other than passing access and secret key in core-site.xml 

Also can u please tell me if you know ? how to sync directories from hdfs to s3 like below :

hdfs://home/test/abc.txt      ----> s3://bucket/test/abc.txt

 

Re: Unable to copy data from HDFS to S3

Super Collaborator

Hi @VenkateshB,

 

You may want to take a look at the doc here where provides some distcp examples:

https://www.cloudera.com/documentation/enterprise/6/latest/topics/cdh_admin_distcp_data_cluster_migr...

 

Thanks and hope it helps,

Li

Li Wang, Technical Solution Manager


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