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Here we learned to use GetFile to get XLSX files from local, convert them to CSV, and store them into HDFS in NiFi.# This PowerShell script converts all CSV files in a specific location to XLSX format. Note: if you get any errors on permissions to store through the HDFS, go to Hadoop installed folder and edit the hdfs-site.xml add the below code: The output of the stored data in the HDFS and its file structure : We have given value append for the conflict resolutions strategy append because it will append to it when new data comes. Here in the above image, we provided Hadoop configurations resources, and in the directory, we have given a directory name to store files. Note: In the Hadoop configurations, we should provide the 'core-site.xml' and 'hdfs-site.xml' files because Hadoop will search the classpath for a 'core-site.xml' and 'hdfs-site.xml' file or will revert to a default configuration.

Here we are writing parsed data from the HTTP endpoint and storing it into the HDFS to configure the processor as below. Write FlowFile data to Hadoop Distributed File System (HDFS). The output of the data looks as shown below: Each output Flow File's contents will be formatted as a CSV file where each row from the excel sheet is output as a new line in the CSV file.Īs shown in the above image, we need to provide the value of the Sheets to Extract as Employees. Each sheet from the incoming Excel document will generate a new Flowfile that will be output from this processor. Step 2: Configure the ConvertExcelToCSVProcessorĬonsumes a Microsoft Excel document and converts each worksheet to CSV.

For that, we have configured the Input Directory and also provided the file name. Here we are ingesting the Employee.xlsx file from a local directory. Here we are getting the file from the local directory. NiFi will ignore files it doesn't have at least read permissions for. We have the XLSX file in the local, and the data output looks as shown below.Ĭreates FlowFiles from files in a directory. Note: in this scenario, we tried to know How we configure the ConvertExcelToCSVProcessor and use it. Install Ubuntu in the virtual machine.Step 2: Configure the ConvertExcelToCSVProcessor.