These release notes may supersede information in the rest of the documentation. The Pervasive DataRush web site may also have new information on using this product.
This document may have later updates. Check for a newer version under the Download tab at the web site.
The 3-month trial license is not for production use, not for resale, and not for commercial use.
For details, see license.txt in the installation.
Welcome to the first release candidate for DataRush 4.0.
These release notes cover the following topics:
Please review these requirements before running DataRush.
This release has been tested on the following platforms and environments.
Minimum satisfactory performance requires the following:
Run DataRush on the latest versions of the following Java releases:
A JDK is required rather than a JRE.
Where possible, Sun Java is recommended.
In all cases, 64-bit Java is preferred.
Administrator privileges are required on your local machine to modify the system path environment variable.
The following tools are useful but are not required for DataRush application development:
This topic covers the following procedures:
Allow at least 25 MB free disk space for DataRush installation.
A trial license can be found under the Download tab at the web site.
Required for Windows, optional for Unix systems.
The DataRush bin directory contains the batch script dr.bat and the shell script dr. Both files begin with settings for JVM location and memory usage.
The JVM location is set by JAVA_HOME. If you already have set this variable in your system, leave this setting as is. Otherwise you must enter an absolute path to a Java installation.
For example, in a Windows system, the path can resemble the following:
JAVA_HOME=C:\Program Files\Java\jdk1.6.0_07
JVM options are set by JAVA_ARGS. JVM options are local to the session in which DataRush runs. The dr command line script sets a default for maximum memory usage to -Xmx512M (512 MB).
You may also set memory start size, such as -Xms512M.
These settings are for demonstration purposes. For developing applications, we recommend 50 percent of physical memory.
Notes: In testing on Sun JVMs, performance is better when ms and mx have the same value. Sun users with a server JVM can use the -server option, which must appear first in JAVA_ARGS.
Logging is configured in the file InstallDir/datarush-4.0.0/conf/logger.properties.
In this file, see “File Handler Logging Settings.”
Documentation for this release is provided as command line help, Javadoc, and comments in the property files for the samples.
dr --help or dr -h to see information about run-time options.Once you have installed DataRush, we recommend that you try the working sample applications provided with the installation. For each example, all needed files are in InstallDir/datarush-4.0.0/samples.
DataRush includes the following sample applications:
The samples directory also includes Javadoc for the samples.
As a convenience, the installation includes the batch script runsamples.bat for Windows and the shell script runsamples for Unix. Running this script in the samples directory executes all samples and generates output and logging files.
The following items describe known issues in the current release.
Issue: In sorting dataflows with hundreds of columns, the current sort implementation may encounter resource problems involving memory, number of threads, and number of open files.
Workaround: An RC1 patch will be made available for download after the release.
Issue: Use of flows created using RoundRobinPartitioner, RoundRobinUnpartitioner, TruncatedFlows, or AppendableFlows leads to incorrect linking information in the serialized application and in the App Structure tab in JConsole. Statistics may also reflect unobvious combinations of internal ports not visible to the user.
Workaround: None.
Issue: To save memory usage, dynamic subgraphs are trimmed from the serialized application along with their statistics.
Workaround: None.
Support is provided in the online developer forums.
|
Pervasive Software Inc. http://www.pervasive.com 12365 Riata Trace Pkwy, Bldg B Austin, TX 78727 USA Voice: (512) 231-6000 Fax: (512) 231-6010 Online Pervasive Contacts |
*** END OF README ***