Release notes¶

What’s in this document?

GraphDB 8.7.3
- Component versions
- GraphDB Engine
GraphDB 8.7.2
GraphDB 8.7.1
GraphDB 8.7.0

GraphDB release notes provide information about the features and improvements in each release, as well as various bugfixes. GraphDB’s versioning scheme is based on semantic versioning. The full version is composed of three components:

major.minor.patch

e.g., 8.1.2 where the major version is 8, the minor version is 1 and the patch version is 2.

Note

Releases with the same major and minor versions do not contain any new features. Releases with different patch versions contain fixes for bugs discovered since the previous minor. New or significantly changed features are released with a higher major or minor version.

GraphDB 8 includes two components with their version numbers:

RDF4J
GraphDB Connectors

Their versions use the same semantic versioning scheme as the whole product, and their values are provided only as a reference.

GraphDB 8.7.3 ¶

Released: 18 June 2018

Component versions ¶

RDF4J	Connectors
2.3.2	9.0.0

Important

Couple non-critical bug fixes in GraphDB Engine

GraphDB Engine ¶

Bug fixes¶

GDB-3506 Concurrent requests for storage health checks may produce an error
GDB-3610 NPE on concurrent health checks for long running queries info

GraphDB 8.7.2 ¶

Released: 22 October 2018

Component versions ¶

RDF4J	Connectors
2.3.2	9.0.0

Important

Several non-critical bug fixes in the Engine, Workbench and Similarity plugin

GraphDB Engine ¶

Bug fixes¶

GDB-2962 Cannot pass SPARQL variable bindings as HTTP query parameters in ClientHTTPTupleQuery

GraphDB Workbench ¶

Bug fixes¶

GDB-2971 Similarity page is available when plugin is disabled

GraphDB Plugins ¶

Bug fixes¶

GDB-2968 Similarity plugin: Error “id is not found in entity pool” while creating index
GDB-2974 Similarity plugin: Remove minfrequency parameter from defaults

GraphDB 8.7.1 ¶

Released: 11 October 2018

Component versions ¶

RDF4J	Connectors
2.3.2	9.0.0

Important

Several non-critical bug fixes in the Engine
Several non-critical bug fixes in the Similarity plugin

GraphDB Engine ¶

Bug fixes¶

GDB-2927 NPE when querying a non-existent repository via direct internal federation
GDB-2931 Queries sent to master don’t terminate when the remote end closes the connection
GDB-2935 Query evaluation error: “Asking for the entity type of a non existing id” after using federation in INSERT
GDB-2944 Incorrect federation behavior when SERVICE makes the entire SELECT

GraphDB Plugins ¶

Bug fixes¶

GDB-2915 Similarity plugin may goes in infinite loop after using invalid search parameter
GDB-2922 Similarity plugin: Disable index access while index is being created
GDB-2925 Similarity plugin: Prevent appending prefixes multiple times

GraphDB 8.7.0 ¶

Released: 28 September 2018

Component versions ¶

RDF4J	Connectors
2.3.2	9.0.0

Important

Semantic similarity searches like term to term, term to document, document to term and document to document with the semantic vector library.
GraphDB SE now supports online backup of an active repository by changing its status from read/write to read-only.
Server mode now serves all RDF4J and GraphDB Workbench endpoints including security without web UI.
Reduced the commit overheads of the large repositories, which should increase their write performance especially for small transactions.
All user changes including the inferred statements are visible in the scope of the current transaction. NB: This feature is not available in the cluster mode due to limitations of the cluster protocol!
An internal federation protocol started with SERVICE <repository:myrepo> can join efficiently data from different repositories hosted in a single instance by skipping all HTTP communication overheads.
Upgrade connectors to Lucene 7.4.0, Solr 7.4.0 and Elasticsearch 6.3.2.

GraphDB Engine ¶

Features and improvements¶

GDB-2412 As a GraphDB user I want improved performance of predicate lists rebuilding
GDB-2571 As GraphDB SE administrator I like to be able to do live backups on a repository
GDB-2578 Added sample security parameters to graphdb.properties
GDB-2638 As a user I want to see the repository changes during updates
GDB-2719 Refactor server mode to support everything workbench mode does
GDB-2735 Remove the support of SYSTEM repository as it is removed from RDF4J 2.3.x
GDB-2793 Increased performance of the writes between LDBC 64M, 256M, 1B by reducing the size of page indices
GDB-2879 As GraphDB user I want an optimised internal federation to other repositories in the same GraphDB bypassing HTTP
GDB-2887 As a GraphDB user I need support of “+” / “-” operations between xsd:dateTime and xsd:duration with SPARQL

Bug fixes¶

GDB-262 As an user cannot see uncommitted changes in the context of its own transaction
GDB-2706 Query operations are not supported on the SYSTEM repository
GDB-2729 Audit logs are not appended to the correct log
GDB-2748 Change health-check response to be valid JSON
GDB-2808 There should be validation if the ruleset exists on remote repository creation
GDB-2812 GraphDB console does not implement the export feature
GDB-2900 NPE on shutting down the PluginManager

GraphDB Cluster ¶

Features and improvements¶

GDB-2433 As a GraphDB cluster user I need deterministic behaviour for functions like NOW() or RAND() in cluster and prevent other non-deterministic functions from out-of-syncing a cluster

Bug Fixing¶

GDB-2739 After a failure in the connectors or aborting a transaction the worker forgets the last known transaction and goes out of sync

GraphDB Workbench ¶

Features and improvements¶

GDB-1663 As a Workbench user I want to manage saved queries per user
GDB-2067 As a user I want to see predicates list on visual graph when I hover a link with more than one predicate
GDB-2689 Visible License Maintenance Date in the UI
GDB-2762 As a user I need to do similarity searches through GraphDB Workbench

Bug Fixing¶

GDB-1855 Namespaces: URI field can be set to a non-URI value
GDB-2218 SPARQL editor: Results output is not remembered when switching between tabs
GDB-2434 The message “No statements added or removed” is not correct
GDB-2644 Incorrect config parameters can be parsed when creating a repository from file
GDB-2672 OntoRefine: Export project for all file formats has a wrong naming convention.
GDB-2687 Settings in the preview of visual graph config may be different from the settings in the visual graph itself
GDB-2731 Misleading/old links in the Help menu
GDB-2794 Misleading saved query tooltips text
GDB-2795 Incorrect new saved query name suggestion after renaming an existing one

GraphDB Connectors and Plugins ¶

Features and improvements¶

GDB-2639 As an user I need to do semantic similarity searches with semantic vectors library packaged as plugin
GDB-2740 Auto-ignore entities with IRIs longer than 512 characters in Elasticsearch
GDB-2750 Include the connector’s name in the log messages
GDB-2776 Upgrade Solr to 7.4.x
GDB-2777 Upgrade Lucene to 7.4.x
GDB-2778 Upgrade Elasticsearch to 6.3.x and refactor to use REST client instead of Transport client