Contents
This sample illustrates the use of the TIBCO StreamBase® File System Adapter for Apache HDFS. The information provided in this guide walks you through the sample setup to run against your HDFS installation.
To access the required files, you must also open the Sample.sbapp, select the Parameters tab, and edit the HDFS_FILE_PATH and HDFS_USER values to represent your HDFS setup.
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In the Package Explorer, double-click to open the
Sample.sbappapplication. Make sure the application is the currently active tab in the EventFlow Editor. -
Click the
Run button. This opens the SB Test/Debug perspective and starts the application.
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In the Manual Input view, select , and click to send the default tuple.
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In the Application Output view, observe tuples emitted on the
WriteStatusoutput stream with information about the file open action. -
In the Manual Input view, select , click to send the default tuple.
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In the Application Output view, observe tuples emitted on the
WriteStatusoutput stream with information about the file close action. -
In the Manual Input view, select , click to send the default tuple.
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In the Application Output view, observe tuples emitted on the
DeleteStatusoutput stream with information about the file delete action. -
Press F9 or click the
Stop Running Application button.
In StreamBase Studio, import this sample with the following steps:
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From the top menu, select → .
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Select
Apache Hadoop Distributed File System (HDFS) Adaptersfrom the StreamBase Standard Adapters category. -
Click OK.
StreamBase Studio creates a single project containing the sample files.
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.
Important
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:
studio-workspace/sample_adapter_embedded_hdfsSee Default Installation Directories for the default location of studio-workspace on your system.
In the default TIBCO StreamBase installation, this sample's files are initially installed in:
streambase-install-dir/sample/adapter/embedded/hdfsSee Default Installation Directories for the default location of studio-workspace on your system.