本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。

# 對 Amazon EMR on EKS Spark Operator 進行疑難排解
<a name="troubleshooting-sparkop"></a>

如果遇到 Amazon EMR on EKS Spark Operator 的問題，則請參閱以下各章節。如需詳細資訊，包括完成安裝的步驟，請參閱 [使用 Spark Operator 執行 Spark 作業](spark-operator.md)。

## Helm Chart 安裝錯誤
<a name="troubleshooting-sparkop-helmerror"></a>

如果遵循 [安裝 Spark Operator](spark-operator-gs.md#spark-operator-install) 中的步驟，當您嘗試安裝或確認 Helm Chart 時，它傳回如下所示的 `INSTALLATION FAILED` 錯誤，則可能尚未為運算子取得 Amazon ECR 儲存庫的驗證字符。

要解決此問題，請重複 [安裝 Spark Operator](spark-operator-gs.md#spark-operator-install) 中的步驟，向 Amazon ECR 登錄檔驗證 Helm 用戶端。然後，請再次嘗試安裝步驟。

```
Error: INSTALLATION FAILED: Kubernetes cluster unreachable: the server has asked for the client to provide credentials
```

## UnsupportedFileSystemException: No FileSystem for scheme "s3"
<a name="troubleshooting-sparkop-filesys"></a>

您可能會在執行緒「main」中遇到以下例外狀況：

```
org.apache.hadoop.fs.UnsupportedFileSystemException: No FileSystem for scheme "s3"
```

如果發生這種情況，請將下列例外狀況新增至 `SparkApplication` 規格：

```
 hadoopConf:
   # EMRFS filesystem
   fs.s3.customAWSCredentialsProvider: com.amazonaws.auth.WebIdentityTokenCredentialsProvider
   fs.s3.impl: com.amazon.ws.emr.hadoop.fs.EmrFileSystem
   fs.AbstractFileSystem.s3.impl: org.apache.hadoop.fs.s3.EMRFSDelegate
   fs.s3.buffer.dir: /mnt/s3
   fs.s3.getObject.initialSocketTimeoutMilliseconds: "2000"
   mapreduce.fileoutputcommitter.algorithm.version.emr_internal_use_only.EmrFileSystem: "2"
   mapreduce.fileoutputcommitter.cleanup-failures.ignored.emr_internal_use_only.EmrFileSystem: "true"
 sparkConf:
   # Required for EMR Runtime
   spark.driver.extraClassPath: /usr/lib/hadoop-lzo/lib/*:/usr/lib/hadoop/hadoop-aws.jar:/usr/share/aws/aws-java-sdk/*:/usr/share/aws/emr/emrfs/conf:/usr/share/aws/emr/emrfs/lib/*:/usr/share/aws/emr/emrfs/auxlib/*:/usr/share/aws/emr/security/conf:/usr/share/aws/emr/security/lib/*:/usr/share/aws/hmclient/lib/aws-glue-datacatalog-spark-client.jar:/usr/share/java/Hive-JSON-Serde/hive-openx-serde.jar:/usr/share/aws/sagemaker-spark-sdk/lib/sagemaker-spark-sdk.jar:/home/hadoop/extrajars/*
   spark.driver.extraLibraryPath: /usr/lib/hadoop/lib/native:/usr/lib/hadoop-lzo/lib/native:/docker/usr/lib/hadoop/lib/native:/docker/usr/lib/hadoop-lzo/lib/native
   spark.executor.extraClassPath: /usr/lib/hadoop-lzo/lib/*:/usr/lib/hadoop/hadoop-aws.jar:/usr/share/aws/aws-java-sdk/*:/usr/share/aws/emr/emrfs/conf:/usr/share/aws/emr/emrfs/lib/*:/usr/share/aws/emr/emrfs/auxlib/*:/usr/share/aws/emr/security/conf:/usr/share/aws/emr/security/lib/*:/usr/share/aws/hmclient/lib/aws-glue-datacatalog-spark-client.jar:/usr/share/java/Hive-JSON-Serde/hive-openx-serde.jar:/usr/share/aws/sagemaker-spark-sdk/lib/sagemaker-spark-sdk.jar:/home/hadoop/extrajars/*
   spark.executor.extraLibraryPath: /usr/lib/hadoop/lib/native:/usr/lib/hadoop-lzo/lib/native:/docker/usr/lib/hadoop/lib/native:/docker/usr/lib/hadoop-lzo/lib/native
```