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From Eike von Seggern <eike.segg...@sevenval.com>
Subject Custom AWS S3 endpoint with path-style access (cf. [HDFS-8727])
Date Tue, 24 Nov 2015 11:02:50 GMT
Hello,

I'm using fake-s3 for testing "s3a://"-backed storage locally. This
requires path-style access, which is not accessible via configuration.

I'm aware of [HDFS-8727], stating that setting a custom endpoint
switches to path-style access automatically. However, this is not
working for me.

I'm using Hadoop 2.7.1 with Spark 1.5.2. I've set

fs.s3a.connection.ssl.enabled  = false
fs.s3a.endpoint = "fakes3.localdomain:4567" # Added to /etc/hosts

In the logs, I find

[...]
15/11/24 11:54:49 DEBUG S3Signer: Calculated string to sign:
"HEAD

application/x-www-form-urlencoded; charset=utf-8
Tue, 24 Nov 2015 10:54:49 GMT
/bucket-name/"
15/11/24 11:54:49 DEBUG request: Sending Request: HEAD
http://bucket-name.fakes3.localdomain:4567 / Headers: (Authorization:
AWS XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX, Date: Tue, 24
Nov 2015 10:54:49 GMT, User-Agent: aws-sdk-java/1.7.4
Linux/3.16.0-4-amd64 OpenJDK_64-Bit_Server_VM/24.91-b01/1.7.0_91,
Content-Type: application/x-www-form-urlencoded; charset=utf-8, )
15/11/24 11:54:49 DEBUG AmazonHttpClient: Retriable error detected,
will retry in 20000ms, attempt number: 9
15/11/24 11:55:09 DEBUG PoolingClientConnectionManager: Connection
request: [route: {}->http://bucket-name.fakes3.localdomain:4567][total
kept alive: 0; route allocated: 0 of 15; total allocated: 0 of 15]
15/11/24 11:55:09 DEBUG PoolingClientConnectionManager: Connection
leased: [id: 10][route:
{}->http://bucket-name.fakes3.localdomain:4567][total kept alive: 0;
route allocated: 1 of 15; total allocated: 1 of 15]
15/11/24 11:55:09 DEBUG DefaultClientConnection: Connection
org.apache.http.impl.conn.DefaultClientConnection@4397caf1 closed
15/11/24 11:55:09 DEBUG DefaultClientConnection: Connection
org.apache.http.impl.conn.DefaultClientConnection@4397caf1 shut down
15/11/24 11:55:09 DEBUG DefaultClientConnection: Connection
org.apache.http.impl.conn.DefaultClientConnection@4397caf1 closed
15/11/24 11:55:09 DEBUG PoolingClientConnectionManager: Connection
released: [id: 10][route:
{}->http://bucket-name.fakes3.localdomain:4567][total kept alive: 0;
route allocated: 0 of 15; total allocated: 0 of 15]
15/11/24 11:55:09 INFO AmazonHttpClient: Unable to execute HTTP
request: bucket-name.fakes3.localdomain: Name or service not known

Any help, what I'm doing wrong in my setup would be appreciated.

Best

Eike


[HDFS-8727] https://issues.apache.org/jira/browse/HDFS-8727

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