Thanks for sharing this, Christian.
What build of Spark are you using? If I understand correctly, if you are
using Spark built against Hadoop 2.6+ then additional configs alone won't
help because additional libraries also need to be installed
<https://issues.apache.org/jira/browse/SPARK-7481>.
Nick
On Thu, Nov 5, 2015 at 11:25 AM Christian <engr...@gmail.com> wrote:
> We ended up reading and writing to S3 a ton in our Spark jobs.
> For this to work, we ended up having to add s3a, and s3 key/secret pairs.
> We also had to add fs.hdfs.impl to get these things to work.
>
> I thought maybe I'd share what we did and it might be worth adding these
> to the spark conf for out of the box functionality with S3.
>
> We created:
> ec2/deploy.generic/root/spark-ec2/templates/root/spark/conf/core-site.xml
>
> We changed the contents form the original, adding in the following:
>
> <property>
> <name>fs.file.impl</name>
> <value>org.apache.hadoop.fs.LocalFileSystem</value>
> </property>
>
> <property>
> <name>fs.hdfs.impl</name>
> <value>org.apache.hadoop.hdfs.DistributedFileSystem</value>
> </property>
>
> <property>
> <name>fs.s3.impl</name>
> <value>org.apache.hadoop.fs.s3native.NativeS3FileSystem</value>
> </property>
>
> <property>
> <name>fs.s3.awsAccessKeyId</name>
> <value>{{aws_access_key_id}}</value>
> </property>
>
> <property>
> <name>fs.s3.awsSecretAccessKey</name>
> <value>{{aws_secret_access_key}}</value>
> </property>
>
> <property>
> <name>fs.s3n.awsAccessKeyId</name>
> <value>{{aws_access_key_id}}</value>
> </property>
>
> <property>
> <name>fs.s3n.awsSecretAccessKey</name>
> <value>{{aws_secret_access_key}}</value>
> </property>
>
> <property>
> <name>fs.s3a.awsAccessKeyId</name>
> <value>{{aws_access_key_id}}</value>
> </property>
>
> <property>
> <name>fs.s3a.awsSecretAccessKey</name>
> <value>{{aws_secret_access_key}}</value>
> </property>
>
> This change makes spark on ec2 work out of the box for us. It took us
> several days to figure this out. It works for 1.4.1 and 1.5.1 on Hadoop
> version 2.
>
> Best Regards,
> Christian
>
