Question

我一直在使用Dataprep构建数据流模板。

从https://console.cloud.google.com/dataflow/createjob运行它-没问题。它会提示您输入参数（区域端点，输入位置，输出位置，临时文件的自定义位置），而元数据文件基本上会为我提供答案。

当我开始使用REST API从Python运行自定义模板时，我将包括以下参数（很多引号转义）

BODY = {
    "jobName": "{jobname}".format(jobname=JOBNAME),
    "parameters": {
        "customGcsTempLocation": "gs://{bucket}/dts/temp".format(bucket=BUCKET),
        "inputLocations":"{{\"location1\": \"projectname:DATASET.table\",\"location2\": \"projectname:DATASET.table\",\"location3\": \"projectname:DATASET.table\",\"location4\": \"gs://bucket/filename.csv\",\"location5\":\"projectname:DATASET.table\",\"location6\":\"projectname:DATASET.table\",\"location7\":\"projectname:DATASET.table\",\"location8\":\"projectname:DATASET.table\",\"location9\": [\"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename\"]}}",
        "outputLocations":"{{\"projectname:DATASET.table\"}}"
    },
     "environment": {
        "tempLocation": "gs://{bucket}/dts/temp".format(bucket=BUCKET)
     }
}

我得到的错误是“模板参数无效”，但没有更多细节；我不确定是否遗漏了某些东西，包括我不应该错过的东西，或者错误地转义了某些东西（诸如this之类的其他问题似乎表明后者并不少见）。任何建议表示赞赏，谢谢

Answer 1

在过去的6到7个小时里，我一直遇到同样的问题，终于使它起作用。似乎导致此问题的参数是“ tempLocation”。同样，您似乎在输入和输出位置参数中还有一组{}。请尝试以下操作：

BODY = {
    "jobName": "{jobname}".format(jobname=JOBNAME),
    "parameters": {
        "customGcsTempLocation": "gs://{bucket}/dts/temp".format(bucket=BUCKET),
        "inputLocations":"{\"location1\": \"projectname:DATASET.table\",\"location2\": \"projectname:DATASET.table\",\"location3\": \"projectname:DATASET.table\",\"location4\": \"gs://bucket/filename.csv\",\"location5\":\"projectname:DATASET.table\",\"location6\":\"projectname:DATASET.table\",\"location7\":\"projectname:DATASET.table\",\"location8\":\"projectname:DATASET.table\",\"location9\": [\"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename.tsv\", \"gs://bucket/folder/filename\"]}",
        "outputLocations":"{\"projectname:DATASET.table\"}"
    }
}

让我知道这是否对您有用！

Answer 2

克里斯蒂安（Cristian）是正确的，但我犯了另一个错误，以防在类似情况下对其他人有所帮助。

我应该对location9中的文件名进行不同的重命名，因为它们显然位于列表中（而不只是一个值）。下面显示了如何完成此操作：

\"location9\":\"[\\\"gs://bucket/folder/folder.tsv\\\",\\\"gs://bucket/folder/filename1122.tsv\\\",\\\"gs://bucket/folder/filename1123.tsv\\\",\\\"gs://bucket/folder/filename1124.tsv\\\",\\\"gs://bucket/folder/filename1125.tsv\\\",\\\"gs://bucket/folder/filename1126.tsv\\\",\\\"gs://bucket/folder/filename1127.tsv\\\",\\\"gs://bucket/folder/filename1128.tsv\\\",\\\"gs://bucket/folder/filename1129.tsv\\\",\\\"gs://bucket/folder/filename1201.tsv\\\",\\\"gs://bucket/folder/filename1202.tsv\\\",\\\"gs://bucket/folder/filename1203.tsv\\\",\\\"gs://bucket/folder/filename1204.tsv\\\",\\\"gs://bucket/folder/filename1205.tsv\\\",\\\"gs://bucket/folder/filename1206.tsv\\\",\\\"gs://bucket/folder/filename1207.tsv\\\",\\\"gs://bucket/folder/filename1208.tsv\\\",\\\"gs://bucket/folder/filename1209.tsv\\\",\\\"gs://bucket/folder/filename1210.tsv\\\",\\\"gs://bucket/folder/filename1211.tsv\\\",\\\"gs://bucket/folder/filename1212.tsv\\\"]\"

使用Cloud Dataflow REST API / Python启动自定义模板时如何处理“模板参数无效”

2 个答案: