Azure data factory 输入数据集不工作

我创建了一个azure数据工厂，以使用“DataLakeAnalyticsU SQL”活动计划U-SQL脚本。请参阅下面的代码：

InputDataset
{
"name": "InputDataLakeTable",
"properties": {
    "published": false,
    "type": "AzureDataLakeStore",
    "linkedServiceName": "LinkedServiceSource",
    "typeProperties": {
        "fileName": "SearchLog.txt",
        "folderPath": "demo/",
        "format": {
            "type": "TextFormat",
            "rowDelimiter": "\n",
            "columnDelimiter": "|",
            "quoteChar": "\""
        }
    },
    "availability": {
        "frequency": "Hour",
        "interval": 1
    }
}

}

}

}

我已成功创建所有必需的链接服务。 但部署管道后，不会为输入数据集创建时间片。见下图：

而输出数据集需要上游输入数据集时间片。因此，输出数据集的时间片仍处于挂起执行状态，my Azure data factory管道无法工作。 见下图：

---

任何解决此问题的建议。

如果没有其他活动正在创建InputDataLakeTable，则需要添加该属性

"external": true

Pipeline:
{
"name": "ComputeEventsByRegionPipeline",
"properties": {
    "description": "This is a pipeline to compute events for en-gb locale and date less than 2012/02/19.",
    "activities": [
        {
            "type": "DataLakeAnalyticsU-SQL",
            "typeProperties": {
                "scriptPath": "scripts\\SearchLogProcessing.txt",
                "degreeOfParallelism": 3,
                "priority": 100,
                "parameters": {
                    "in": "/demo/SearchLog.txt",
                    "out": "/scripts/Result.txt"
                }
            },
            "inputs": [
                {
                    "name": "InputDataLakeTable"
                }
            ],
            "outputs": [
                {
                    "name": "OutputDataLakeTable"
                }
            ],
            "policy": {
                "timeout": "06:00:00",
                "concurrency": 1,
                "executionPriorityOrder": "NewestFirst",
                "retry": 1
            },
            "scheduler": {
                "frequency": "Hour",
                "interval": 1
            },
            "name": "CopybyU-SQL",
            "linkedServiceName": "AzureDataLakeAnalyticsLinkedService"
        }
    ],
    "start": "2016-12-21T17:44:13.557Z",
    "end": "2016-12-22T17:44:13.557Z",
    "isPaused": false,
    "hubName": "denojaidbfactory_hub",
    "pipelineMode": "Scheduled"
}

"external": true