Driven Plugin FAQversion 1.0.5
Can I run my own Driven server locally on-premise or remotely at my cloud or hosting provider?
A self hosted version of Driven is coming soon. Sign-up at http://cascading.io/driven-on-prem/ to get notified when available.
What versions of Hadoop are supported?
Driven works with any version of Hadoop that’s compatible with Cascading. See http://www.cascading.org/support/compatibility/ for the full list.
What are the benefits of registering for Driven?
When you signup at http://cascading.io/register/ for the cloud version of Driven, or use the self-hosted version for Driven and configure the Driven API key, you get access to additional features such as having the ability to organize applications into Team. This becomes useful when you want to categorize and organize applications around lines of business, different classes of customers, or compare historical execution behavior across the same class of applications to identify outliers and trends.
What versions of the JDK are supported?
The matrix of supported JDKs is at http://www.cascading.org/support/compatibility/
How do I see what data is being transmitted?
The plug-in can be run in archive mode.
If archive mode is set, all records that are sent to the Driven Server are written to disk even if the server is unreachable. This can be useful if the Driven server is not available or unreachable as the archive can later be replayed when the server is reachable. Sending data to the server is idempotent, so re-running data again does not corrupt already recorded data. To use archive mode, pass a JVM property named driven.archive.path when Cascading is invoked.
In case of Apache Hadoop, you can use the
HADOOP_OPTS environment variable.
> export HADOOP_OPTS="$HADOOP_OPTS -Ddriven.archive.path=/sompath/archive"
The compressed archive files will be located at the path set with a timestamp when the cascading job started. Do not use ~ expansion for the path.
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