Contents
This sample demonstrates the use of the TIBCO StreamBase® Binary File Reader and Writer Adapters for Apache HDFS. HDFS is the well-known acronym for Apache's Hadoop Distributed File System.
In StreamBase Studio, import this sample with the following steps:
-
From the top menu, click
→ . -
Type
hdfs
to narrow the list of options. -
Select hdfsbinaryrw from the Large Data Storage and Analysis category.
-
Click
.
StreamBase Studio creates a project for this sample.
-
In the Project Explorer, open the sample you just loaded.
-
Open the
src/main/eventflow
folder. -
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).
-
Open the named application 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
→ from the context menu. -
In the Project Explorer view, open the
src/main/resources
folder and double-clickmyfile.csv
to see the CSV records that will be converted to binary. -
From the SB Test/Debug perspective, in the Manual Input view, select the DoWrite input stream and click
. -
Look for tuples emitted on the BinaryDataWritten output stream and observe they contain the values from
myfile.csv
. -
Select the DoRead input stream and click
. -
Look for tuples emitted on the BinaryDataRead output stream and observe they contain the values from
myfile.csv
. -
Select the DoDelete input stream and click
. -
Look for tuples emitted on the DeleteStatus output stream to confirm the file was deleted.
-
When done, press F9 or click the Stop Running Application button.
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_hdfsbinaryrw
See Default Installation Directories for the default location of studio-workspace
on your system.