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# RollbackApplication
将应用程序还原到先前运行的版本。如果您怀疑应用程序处于临时状态或运行状态，则可以将其还原。
只有当应用程序处于、或`RUNNING`状态时 `UPDATING``AUTOSCALING`，您才能回滚该应用程序。
回滚应用程序时，它会从上次成功的快照中加载状态数据。如果应用程序没有快照，则 Apache Flink 托管服务会拒绝回滚请求。
## 请求语法
```
{
"ApplicationName": "string",
"CurrentApplicationVersionId": number
}
```
## 请求参数
请求接受采用 JSON 格式的以下数据。
** [ApplicationName](#API_RollbackApplication_RequestSyntax) **
应用程序的名称。
类型：字符串
长度限制：最小长度为 1。最大长度为 128。
模式：`[a-zA-Z0-9_.-]+`
是否必需：是
** [CurrentApplicationVersionId](#API_RollbackApplication_RequestSyntax) **
当前应用程序版本 ID。您可以使用 [DescribeApplication](API_DescribeApplication.md) 检索应用程序版本 ID。
类型：长整型
有效范围：最小值为 1。最大值为 999999999。
是否必需：是
## 响应语法
```
{
"ApplicationDetail": {
"ApplicationARN": "string",
"ApplicationConfigurationDescription": {
"ApplicationCodeConfigurationDescription": {
"CodeContentDescription": {
"CodeMD5": "string",
"CodeSize": number,
"S3ApplicationCodeLocationDescription": {
"BucketARN": "string",
"FileKey": "string",
"ObjectVersion": "string"
},
"TextContent": "string"
},
"CodeContentType": "string"
},
"ApplicationEncryptionConfigurationDescription": {
"KeyId": "string",
"KeyType": "string"
},
"ApplicationSnapshotConfigurationDescription": {
"SnapshotsEnabled": boolean
},
"ApplicationSystemRollbackConfigurationDescription": {
"RollbackEnabled": boolean
},
"EnvironmentPropertyDescriptions": {
"PropertyGroupDescriptions": [
{
"PropertyGroupId": "string",
"PropertyMap": {
"string" : "string"
}
}
]
},
"FlinkApplicationConfigurationDescription": {
"CheckpointConfigurationDescription": {
"CheckpointingEnabled": boolean,
"CheckpointInterval": number,
"ConfigurationType": "string",
"MinPauseBetweenCheckpoints": number
},
"JobPlanDescription": "string",
"MonitoringConfigurationDescription": {
"ConfigurationType": "string",
"LogLevel": "string",
"MetricsLevel": "string"
},
"ParallelismConfigurationDescription": {
"AutoScalingEnabled": boolean,
"ConfigurationType": "string",
"CurrentParallelism": number,
"Parallelism": number,
"ParallelismPerKPU": number
}
},
"RunConfigurationDescription": {
"ApplicationRestoreConfigurationDescription": {
"ApplicationRestoreType": "string",
"SnapshotName": "string"
},
"FlinkRunConfigurationDescription": {
"AllowNonRestoredState": boolean
}
},
"SqlApplicationConfigurationDescription": {
"InputDescriptions": [
{
"InAppStreamNames": [ "string" ],
"InputId": "string",
"InputParallelism": {
"Count": number
},
"InputProcessingConfigurationDescription": {
"InputLambdaProcessorDescription": {
"ResourceARN": "string",
"RoleARN": "string"
}
},
"InputSchema": {
"RecordColumns": [
{
"Mapping": "string",
"Name": "string",
"SqlType": "string"
}
],
"RecordEncoding": "string",
"RecordFormat": {
"MappingParameters": {
"CSVMappingParameters": {
"RecordColumnDelimiter": "string",
"RecordRowDelimiter": "string"
},
"JSONMappingParameters": {
"RecordRowPath": "string"
}
},
"RecordFormatType": "string"
}
},
"InputStartingPositionConfiguration": {
"InputStartingPosition": "string"
},
"KinesisFirehoseInputDescription": {
"ResourceARN": "string",
"RoleARN": "string"
},
"KinesisStreamsInputDescription": {
"ResourceARN": "string",
"RoleARN": "string"
},
"NamePrefix": "string"
}
],
"OutputDescriptions": [
{
"DestinationSchema": {
"RecordFormatType": "string"
},
"KinesisFirehoseOutputDescription": {
"ResourceARN": "string",
"RoleARN": "string"
},
"KinesisStreamsOutputDescription": {
"ResourceARN": "string",
"RoleARN": "string"
},
"LambdaOutputDescription": {
"ResourceARN": "string",
"RoleARN": "string"
},
"Name": "string",
"OutputId": "string"
}
],
"ReferenceDataSourceDescriptions": [
{
"ReferenceId": "string",
"ReferenceSchema": {
"RecordColumns": [
{
"Mapping": "string",
"Name": "string",
"SqlType": "string"
}
],
"RecordEncoding": "string",
"RecordFormat": {
"MappingParameters": {
"CSVMappingParameters": {
"RecordColumnDelimiter": "string",
"RecordRowDelimiter": "string"
},
"JSONMappingParameters": {
"RecordRowPath": "string"
}
},
"RecordFormatType": "string"
}
},
"S3ReferenceDataSourceDescription": {
"BucketARN": "string",
"FileKey": "string",
"ReferenceRoleARN": "string"
},
"TableName": "string"
}
]
},
"VpcConfigurationDescriptions": [
{
"SecurityGroupIds": [ "string" ],
"SubnetIds": [ "string" ],
"VpcConfigurationId": "string",
"VpcId": "string"
}
],
"ZeppelinApplicationConfigurationDescription": {
"CatalogConfigurationDescription": {
"GlueDataCatalogConfigurationDescription": {
"DatabaseARN": "string"
}
},
"CustomArtifactsConfigurationDescription": [
{
"ArtifactType": "string",
"MavenReferenceDescription": {
"ArtifactId": "string",
"GroupId": "string",
"Version": "string"
},
"S3ContentLocationDescription": {
"BucketARN": "string",
"FileKey": "string",
"ObjectVersion": "string"
}
}
],
"DeployAsApplicationConfigurationDescription": {
"S3ContentLocationDescription": {
"BasePath": "string",
"BucketARN": "string"
}
},
"MonitoringConfigurationDescription": {
"LogLevel": "string"
}
}
},
"ApplicationDescription": "string",
"ApplicationMaintenanceConfigurationDescription": {
"ApplicationMaintenanceWindowEndTime": "string",
"ApplicationMaintenanceWindowStartTime": "string"
},
"ApplicationMode": "string",
"ApplicationName": "string",
"ApplicationStatus": "string",
"ApplicationVersionCreateTimestamp": number,
"ApplicationVersionId": number,
"ApplicationVersionRolledBackFrom": number,
"ApplicationVersionRolledBackTo": number,
"ApplicationVersionUpdatedFrom": number,
"CloudWatchLoggingOptionDescriptions": [
{
"CloudWatchLoggingOptionId": "string",
"LogStreamARN": "string",
"RoleARN": "string"
}
],
"ConditionalToken": "string",
"CreateTimestamp": number,
"LastUpdateTimestamp": number,
"RuntimeEnvironment": "string",
"ServiceExecutionRole": "string"
},
"OperationId": "string"
}
```
## 响应元素
如果此操作成功，则该服务将会发送回 HTTP 200 响应。
服务以 JSON 格式返回以下数据。
** [ApplicationDetail](#API_RollbackApplication_ResponseSyntax) **
描述应用程序，包括应用程序 Amazon 资源名称（ARN）、状态、最新版本以及输入和输出配置。
类型：[ApplicationDetail](API_ApplicationDetail.md) 对象
** [OperationId](#API_RollbackApplication_ResponseSyntax) **
可用于跟踪请求的操作 ID。
类型：字符串
长度限制：最小长度为 1。长度上限为 64。
## 错误
** ConcurrentModificationException **
由于对应用程序进行并发修改而引发的异常。此错误可能是由于在未使用当前应用程序 ID 的情况下尝试修改应用程序所致。
HTTP 状态代码：400
** InvalidArgumentException **
指定的输入参数值无效。
HTTP 状态代码：400
** InvalidRequestException **
操作的请求 JSON 无效。
HTTP 状态代码：400
** ResourceInUseException **
该应用程序不可用于此操作。
HTTP 状态代码：400
** ResourceNotFoundException **
无法找到指定的应用程序。
HTTP 状态代码：400
** UnsupportedOperationException **
由于不支持指定的参数或指定的资源对此操作无效，请求被拒绝。
HTTP 状态代码：400
## 另请参阅
有关以特定语言之一使用此 API 的更多信息 AWS SDKs，请参阅以下内容：
+ [AWS 命令行界面 V2](https://docs.aws.amazon.com/goto/cli2/kinesisanalyticsv2-2018-05-23/RollbackApplication)
+ [AWS 适用于.NET 的 SDK V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/kinesisanalyticsv2-2018-05-23/RollbackApplication)
+ [AWS 适用于 C\$1\$1 的 SDK](https://docs.aws.amazon.com/goto/SdkForCpp/kinesisanalyticsv2-2018-05-23/RollbackApplication)
+ [AWS 适用于 Go v2 的 SDK](https://docs.aws.amazon.com/goto/SdkForGoV2/kinesisanalyticsv2-2018-05-23/RollbackApplication)
+ [AWS 适用于 Java 的 SDK V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/kinesisanalyticsv2-2018-05-23/RollbackApplication)
+ [AWS JavaScript V3 版软件开发工具包](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/kinesisanalyticsv2-2018-05-23/RollbackApplication)
+ [AWS 适用于 Kotlin 的 SDK](https://docs.aws.amazon.com/goto/SdkForKotlin/kinesisanalyticsv2-2018-05-23/RollbackApplication)
+ [AWS 适用于 PHP 的 SDK V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/kinesisanalyticsv2-2018-05-23/RollbackApplication)
+ [AWS Python 软件开发工具包](https://docs.aws.amazon.com/goto/boto3/kinesisanalyticsv2-2018-05-23/RollbackApplication)
+ [AWS 适用于 Ruby V3 的 SDK](https://docs.aws.amazon.com/goto/SdkForRubyV3/kinesisanalyticsv2-2018-05-23/RollbackApplication)