Hey Stephan, Hey Steve,
that was the right hint, adding that open to the Java-Options fixed the problem. Maybe we should add this somehow to our Flink Wiki?

Thanks!

Dominik

On 28/11/17 11:55, Stephan Ewen wrote:
Got a pointer from Steve that this is answered on Stack Overflow here: https://stackoverflow.com/questions/36154484/aws-java-sdk-manually-set-signature-version <https://stackoverflow.com/questions/36154484/aws-java-sdk-manually-set-signature-version>

Flink 1.4 contains a specially bundled "fs-s3-hadoop" with smaller no footprint, compatible across Hadoop versions, and based on a later s3a and AWS sdk. In that connector, it should work out of the box because it uses a later AWS SDK. You can also use it with earlier Hadoop versions because dependencies are relocated, so it should not cash/conflict.




On Mon, Nov 27, 2017 at 8:58 PM, Stephan Ewen <se...@apache.org <mailto:se...@apache.org>> wrote:

    Hi!

    The endpoint config entry looks correct.
    I was looking at this issue to see if there are pointers to anything
    else, but it looks like the explicit endpoint entry is the most
    important thing: https://issues.apache.org/jira/browse/HADOOP-13324
    <https://issues.apache.org/jira/browse/HADOOP-13324>

    I cc-ed Steve Loughran, who is Hadoop's S3 expert (sorry Steve for
    pulling you in again - listening and learning still about the subtle
    bits and pieces of S3).
    @Steve are S3 V4 endpoints supported in Hadoop 2.7.x already, or
    only in Hadoop 2.8?

    Best,
    Stephan


    On Mon, Nov 27, 2017 at 9:47 AM, Dominik Bruhn <domi...@dbruhn.de
    <mailto:domi...@dbruhn.de>> wrote:

        Hey,
        can anyone give a hint? Does anyone have flink running with an
        S3 Bucket in Frankfurt/eu-central-1 and can share his config and
        setup?

        Thanks,
        Dominik

        On 22. Nov 2017, at 17:52, domi...@dbruhn.de
        <mailto:domi...@dbruhn.de> wrote:

        Hey everyone,
        I'm trying since hours to get Flink 1.3.2 (downloaded for
        hadoop 2.7) to snapshot/checkpoint to an S3 bucket which is
        hosted in the eu-central-1 region. Everything works fine for
        other regions. I'm running my job on a JobTracker in local
        mode. I googled the internet and found several hints, most of
        them telling that setting the `fs.s3a.endpoint` should solve
        it. It doesn't. I'm also sure that the core-site.xml (see
        below) is picked up, if I put garbage into the endpoint then I
        receive a hostname not found error.

        The exception I'm getting is:
        com.amazonaws.services.s3.model.AmazonS3Exception: Status
        Code: 400, AWS Service: Amazon S3, AWS Request ID:
        432415098B0994BC, AWS Error Code: null, AWS Error Message: Bad
        Request, S3 Extended Request ID:
        
1PSDe4EOh7zvfNPdWrwoBKKOtsS/gf9atn5movRzcpvIH2WsR+ptXvXyFyEHXjDb3F9AniXgsBQ=

        I read the AWS FAQ but I don't think that
        
https://ci.apache.org/projects/flink/flink-docs-release-1.3/setup/aws.html#ioexception-400-bad-request
        
<https://ci.apache.org/projects/flink/flink-docs-release-1.3/setup/aws.html#ioexception-400-bad-request>
        applies to me as I'm not running the NativeFileSystem.

        I suspect this is related to the v4 signing protocol which is
        required for S3 in Frankfurt. Could it be that the aws-sdk
        version is just too old? I tried to play around with it but
        the hadoop adapter is incompatible with newer versions.

        I have the following core-site.xml:

        <?xml version="1.0"?>
        <configuration>
         
<property><name>fs.s3.impl</name><value>org.apache.hadoop.fs.s3a.S3AFileSystem</value></property>
         <property><name>fs.s3a.buffer.dir</name><value>/tmp</value></property>
         
<property><name>fs.s3a.access.key</name><value>something</value></property>
         
<property><name>fs.s3a.secret.key</name><value>wont-tell</value></property>
         
<property><name>fs.s3a.endpoint</name><value>s3.eu-central-1.amazonaws.com
        <http://s3.eu-central-1.amazonaws.com></value></property>
        </configuration

        Here is my lib folder with the versions of the aws-sdk and the
        hadoop-aws integration:
        -rw-------    1 root     root       11.4M Mar 20  2014
        aws-java-sdk-1.7.4.jar
        -rw-r--r--    1 1005     1006       70.0M Aug  3 12:10
        flink-dist_2.11-1.3.2.jar
        -rw-rw-r--    1 1005     1006       98.3K Aug  3 12:07
        flink-python_2.11-1.3.2.jar
        -rw-r--r--    1 1005     1006       34.9M Aug  3 11:58
        flink-shaded-hadoop2-uber-1.3.2.jar
        -rw-------    1 root     root      100.7K Jan 14  2016
        hadoop-aws-2.7.2.jar
        -rw-------    1 root     root      414.7K May 17  2012
        httpclient-4.2.jar
        -rw-------    1 root     root      218.0K May  1  2012
        httpcore-4.2.jar
        -rw-rw-r--    1 1005     1006      478.4K Jul 28 14:50
        log4j-1.2.17.jar
        -rw-rw-r--    1 1005     1006        8.7K Jul 28 14:50
        slf4j-log4j12-1.7.7.jar

        Can anyone give me any hints?

        Thanks,
        Dominik



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