HDFS CSV File Writer Output Adapter Sample

About This Sample

This sample demonstrates the usage of the TIBCO StreamBase® CSV File Writer Adapter for Apache Hadoop Distributed File System (HDFS).

Initial Setup

You must also open the CVSWriterTest.sbapp file and select the Parameters tab and edit the HDFS_FILE_PATH and HDFS_USER values to represent your current HDFS setup and where you would like to store the sample data. The .sbapp file is located in sample_adapter_embedded_hdfscsvwritersrc/main/eventflowcom.sample.adapter.hdfscsvwriter

Importing This Sample into StreamBase Studio

In StreamBase Studio, import this sample with the following steps:

  • From the top-level menu, click FileLoad StreamBase Sample.

  • Type csv to narrow the list of options.

  • Select hdfscsvwriter from the Large Data Storage and Analysis category.

  • Click OK.

StreamBase Studio creates a project for this sample.

Running CVSWriterTest.sbapp in StreamBase Studio

  1. In the Project Explorer, open the sample you just loaded.

  2. Open the src/main/eventflow folder.

  3. Open the package folder (most samples contain a single package folder. Open the top-level package folder if your sample contains more than one folder).

  4. Open the named application file and click the Run button. This opens the SB Test/Debug perspective and starts the application.

    If you see red marks, wait a moment for the project in Studio to load its features.

    If red marks do not resolve themselves in a moment, select the project and right-click MavenUpdate Project from the context menu.

  5. Select the Manual Input tab.

  6. Enter the value 10 for a and click Send Data.

  7. Press F9 or click the Stop Running Application button.

  8. The file specified in the HDFS_FILE_PATH parameter value should now contain tuples formatted as shown in this example:

    10,100,2013-06-15 22:48:44.502-0400

    You must use an HDFS file browser (such as Hue) to open the file from your HDFS file system to view this information.

Sample Location

When you load the sample into StreamBase Studio, Studio copies the sample project's files to your Studio workspace, which is normally part of your home directory, with full access rights.


Load this sample in StreamBase Studio, and thereafter use the Studio workspace copy of the sample to run and test it, even when running from the command prompt.

Using the workspace copy of the sample avoids permission problems. The default workspace location for this sample is:


See Default Installation Directories for the default location of studio-workspace on your system.