# Structured Streaming的cluster模式，在数据处理过程中终止ApplicationManager，应用失败
#### 问题
Structured Streaming的cluster模式，在数据处理过程中终止ApplicationManager，执行应用时显示如下异常。
```
2017-05-09 20:46:02,393 | INFO  | main | 
  client token: Token { kind: YARN_CLIENT_TOKEN, service:  }
  diagnostics: User class threw exception: org.apache.spark.sql.AnalysisException: This query does not support recovering from checkpoint location. Delete hdfs://hacluster/structuredtest/checkpoint/offsets to start over.;
  ApplicationMaster host: 10.96.101.170
  ApplicationMaster RPC port: 0
  queue: default
  start time: 1494333891969
  final status: FAILED
  tracking URL: https://9-96-101-191:8090/proxy/application_1493689105146_0052/
  user: spark2x | org.apache.spark.internal.Logging$class.logInfo(Logging.scala:54)
Exception in thread "main" org.apache.spark.SparkException: Application application_1493689105146_0052 finished with failed status
```
#### 回答
**原因分析：**显示该异常是因为"recoverFromCheckpointLocation"的值判定为false，但却配置了checkpoint目录。
参数"recoverFromCheckpointLocation"的值为代码中"outputMode == OutputMode.Complete()"语句的判断结果（outputMode的默认输出方式为"append"）。
**处理方法：**编写应用时，用户可以根据具体情况修改数据的输出方式。
将输出方式修改为"complete"，"recoverFromCheckpointLocation"的值会判定为true。此时配置了checkpoint目录时就不会显示异常。