Question

我无法从Flink作业访问S3。

如果我为我的工作提交我的组装jar，我会收到拒绝访问错误：

Caused by: 
com.amazon.ws.emr.hadoop.fs.shaded.com.amazonaws.services.s3.model.AmazonS3Exception:
Access Denied (Service: Amazon S3; Status Code: 403; Error Code: AccessDenied; Request ID: ...; S3 Extended Request ID: ...), S3 Extended Request ID: ...

这是我的设置： EMR集群使用“高级配置”创建， Flink 1.4.0。和Hadoop 2.8.3。作为申请。 1x主站，2x节点

实例有EMR_EC2_DefaultRole，其中包含具有S3完全访问权限的策略AmazonElasticMapReduceforEC2Role。实际上，我可以在主节点和从节点上成功发出此命令：

aws s3api list-buckets

hdfs dfs -ls s3://bucketA

我连接到主服务器并启动集群： /usr/lib/flink/bin/yarn-session.sh -n 2 -d

Flink作业从存储桶中读取作为源：

object TestS3 {
  def main(args: Array[String]): Unit = {

  val env: ExecutionEnvironment = ExecutionEnvironment.getExecutionEnvironment

  val input: DataSet[String] = env.readTextFile("s3://bucketA/source/file")
  input.writeAsText("s3://bucketB/delete/me/later")

  env.execute()
  }
}

这是我简单的build.sbt：

name := "TestS3"
scalaVersion := "2.11.11"
version := "0.1"
val flinkVersion = "1.4.0"
libraryDependencies ++= Seq(
    "org.apache.flink" % "flink-core" % flinkVersion % "provided",
    "org.apache.flink" %% "flink-scala" % flinkVersion % "provided"
)

存储桶没有拒绝读取访问权限的策略。它有拒绝删除的政策，但这不应影响Flink工作。 EMR_EC2_Default_Role授予对S3的完全访问权限。

一如既往，非常感谢任何我做错的提示。或者也许我的期望这应该有效？！

这是完整的堆栈跟踪：

java.io.IOException: Error opening the Input Split s3://bucketA/source/file [0,-1]: com.amazon.ws.emr.hadoop.fs.shaded.com.amazonaws.services.s3.model.AmazonS3Exception: Access Denied (Service: Amazon S3; Status Code: 403; Error Code: AccessDenied; Request ID: xyz_request_id; S3 Extended Request ID: xyz_ext_request_id), S3 Extended Request ID: xyz_ext_request_id
    at org.apache.flink.api.common.io.FileInputFormat.open(FileInputFormat.java:705)
    at org.apache.flink.api.common.io.DelimitedInputFormat.open(DelimitedInputFormat.java:477)
    at org.apache.flink.api.common.io.DelimitedInputFormat.open(DelimitedInputFormat.java:48)
    at org.apache.flink.runtime.operators.DataSourceTask.invoke(DataSourceTask.java:145)
    at org.apache.flink.runtime.taskmanager.Task.run(Task.java:718)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.IOException: com.amazon.ws.emr.hadoop.fs.shaded.com.amazonaws.services.s3.model.AmazonS3Exception: Access Denied (Service: Amazon S3; Status Code: 403; Error Code: AccessDenied; Request ID: xyz_request_id; S3 Extended Request ID: xyz_ext_request_id), S3 Extended Request ID: xyz_ext_request_id
    at com.amazon.ws.emr.hadoop.fs.s3n.Jets3tNativeFileSystemStore.handleAmazonServiceException(Jets3tNativeFileSystemStore.java:434)
    at com.amazon.ws.emr.hadoop.fs.s3n.Jets3tNativeFileSystemStore.retrievePair(Jets3tNativeFileSystemStore.java:461)
    at com.amazon.ws.emr.hadoop.fs.s3n.Jets3tNativeFileSystemStore.retrievePair(Jets3tNativeFileSystemStore.java:439)
    at com.amazon.ws.emr.hadoop.fs.s3n.S3NativeFileSystem.open(S3NativeFileSystem.java:1097)
    at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:790)
    at com.amazon.ws.emr.hadoop.fs.EmrFileSystem.open(EmrFileSystem.java:166)
    at org.apache.flink.runtime.fs.hdfs.HadoopFileSystem.open(HadoopFileSystem.java:119)
    at org.apache.flink.runtime.fs.hdfs.HadoopFileSystem.open(HadoopFileSystem.java:36)
    at org.apache.flink.api.common.io.FileInputFormat$InputSplitOpenThread.run(FileInputFormat.java:865)
Caused by: com.amazon.ws.emr.hadoop.fs.shaded.com.amazonaws.services.s3.model.AmazonS3Exception: Access Denied (Service: Amazon S3; Status Code: 403; Error Code: AccessDenied; Request ID: xyz_request_id; S3 Extended Request ID: xyz_ext_request_id), S3 Extended Request ID: xyz_ext_request_id
    at com.amazon.ws.emr.hadoop.fs.shaded.com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1639)
    at com.amazon.ws.emr.hadoop.fs.shaded.com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1304)
    at com.amazon.ws.emr.hadoop.fs.shaded.com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1056)
    at com.amazon.ws.emr.hadoop.fs.shaded.com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:743)
    at com.amazon.ws.emr.hadoop.fs.shaded.com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:717)
    at com.amazon.ws.emr.hadoop.fs.shaded.com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:699)
    at com.amazon.ws.emr.hadoop.fs.shaded.com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:667)
    at com.amazon.ws.emr.hadoop.fs.shaded.com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:649)
    at com.amazon.ws.emr.hadoop.fs.shaded.com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:513)
    at com.amazon.ws.emr.hadoop.fs.shaded.com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4325)
    at com.amazon.ws.emr.hadoop.fs.shaded.com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4272)
    at com.amazon.ws.emr.hadoop.fs.shaded.com.amazonaws.services.s3.AmazonS3Client.getObject(AmazonS3Client.java:1409)
    at com.amazon.ws.emr.hadoop.fs.s3.lite.call.GetObjectCall.perform(GetObjectCall.java:22)
    at com.amazon.ws.emr.hadoop.fs.s3.lite.call.GetObjectCall.perform(GetObjectCall.java:9)
    at com.amazon.ws.emr.hadoop.fs.s3.lite.executor.GlobalS3Executor.execute(GlobalS3Executor.java:91)
    at com.amazon.ws.emr.hadoop.fs.s3.lite.AmazonS3LiteClient.invoke(AmazonS3LiteClient.java:176)
    at com.amazon.ws.emr.hadoop.fs.s3.lite.AmazonS3LiteClient.getObject(AmazonS3LiteClient.java:99)
    at com.amazon.ws.emr.hadoop.fs.s3n.Jets3tNativeFileSystemStore.retrievePair(Jets3tNativeFileSystemStore.java:452)
    ... 7 more

Answer 1

我们弄清楚了，源存储桶是用KMS密钥加密的。因此，EMR_EC2_DefaultRole无法完全访问S3，但还需要访问KMS密钥。我们分别扩展了EMR_EC2_DefaultRole，Flink作业现在可以访问该文件。

也许这篇文章可以帮助别人节省一些时间（而不是忘记KMS加密）。

无法从EMR上的Flink作业访问S3

1 个答案: