The Apache UIMA team is pleased to announce the release of the Apache
UIMA-DUCC version 2.2.1.
The Unstructured Information Management Architecture (UIMA) is a component
framework supporting development, discovery, composition, and deployment of
multi-modal analytics tasked with the analysis of unstructured information.
Apache UIMA is an Apache licensed open source implementation of the UIMA
specification which is being developed by a technical committee within
OASIS, a standards organization. The implementation comprises an SDK and
tooling for composing and running analytic components written in Java and
C++, with some support for Perl, Python and TCL.
DUCC stands for Distributed UIMA Cluster Computing. DUCC is a cluster
management system providing tooling,management, and scheduling facilities
to automate the scale-out of applications written to the UIMA framework.
Core UIMA provides a generalized framework for applications that process
unstructured information such as human language, but does not provide a
scale-out mechanism. UIMA-AS provides a scale-out mechanism to distribute
UIMA pipelines over a cluster of computing resources, but does not provide
job or cluster management of the resources.
DUCC defines a formal job model that closely maps to a standard UIMA
pipeline. Around this job model DUCC provides cluster management services
to automate the scale-out of UIMA pipelines over computing clusters.
This release contains a number of improvements and bug fixes. Notable
updates in this release include:
-The userid of a privileged DUCC installation does not have to be "ducc"
-ducc-mon login can be used on systems where users do not have password
-The DUCC head-node daemons may be moved to another host without breaking
-The deployment descriptor for a UIMA-AS service can be loaded from the
-Interactive applications run correctly with viaducc (fixed lost inputs)
-Files created by DUCC jobs inherit the permissions of the launching
-DUCC performance breakdown for scaled synchronous pipelines is now correct
-Fixed javadoc method headers to enable ducc build with java 8
-Fixed JP communication threads wait logic when JD returns no work
-GC stats not available sometimes from remote JP
For a complete list of bugs and improvements included in this release
-- Jerry Cwiklik, for the Apache UIMA development team