Access to S3 from YARN on EC2

[Ashutosh Kumar]

I have setup a 3 node YARN based cluster on EC2. I am running flink in
cluster mode. I added these lines in core-site.xml

<configuration>

    <property>
        <name>fs.s3n.awsAccessKeyId</name>
        <value>accesskey</value>
    </property>

    <property>
        <name>fs.s3n.awsSecretAccessKey</name>
        <value>secret key</value>
    </property>
    <property>
        <name>fs.s3n.impl</name>
        <value>org.apache.hadoop.fs.s3native.NativeS3FileSystem</value>
    </property>
</configuration>

Also I added this line in conf/flink-conf.yaml
   fs.hdfs.hadoopconf: /usr/local/hadoop/etc/hadoop


However I am getting class not found error while accessing s3 through s3n.
I am using flink 1.0.0.

Caused by: org.apache.flink.runtime.JobException: Creating the input splits
caused an error: java.lang.RuntimeException:
java.lang.ClassNotFoundException: Class
org.apache.hadoop.fs.s3native.NativeS3FileSystem not found
        at
org.apache.flink.runtime.executiongraph.ExecutionJobVertex.<init>(ExecutionJobVertex.java:172)
        at
org.apache.flink.runtime.executiongraph.ExecutionGraph.attachJobGraph(ExecutionGraph.java:696)
        at org.apache.flink.runtime.jobmanager.JobManager.org
$apache$flink$runtime$jobmanager$JobManager$$submitJob(JobManager.scala:1023)
        ... 25 more
Caused by: java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.ClassNotFoundException: Class
org.apache.hadoop.fs.s3native.NativeS3FileSystem not found
        at
org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2227)
        at
org.apache.flink.runtime.fs.hdfs.HadoopFileSystem.getHadoopWrapperClassNameForFileSystem(HadoopFileSystem.java:460)
        at
org.apache.flink.core.fs.FileSystem.getHadoopWrapperClassNameForFileSystem(FileSystem.java:352)
        at org.apache.flink.core.fs.FileSystem.get(FileSystem.java:280)
        at org.apache.flink.core.fs.Path.getFileSystem(Path.java:311)
        at
org.apache.flink.api.common.io.FileInputFormat.createInputSplits(FileInputFormat.java:450)
        at
org.apache.flink.api.common.io.FileInputFormat.createInputSplits(FileInputFormat.java:57)
        at
org.apache.flink.runtime.executiongraph.ExecutionJobVertex.<init>(ExecutionJobVertex.java:156)
        ... 27 more
Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException:
Class org.apache.hadoop.fs.s3native.NativeS3FileSystem not found
        at
org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2195)
        at
org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2219)
        ... 34 more
Caused by: java.lang.ClassNotFoundException: Class
org.apache.hadoop.fs.s3native.NativeS3FileSystem not found
        at
org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2101)
        at
org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2193)
        ... 35 more


Thanks
Ashutosh