MarkLogic Content Pump (mlcp) is a command-line tool that provides the fastest way to import, export, and copy data to or from MarkLogic databases. Core features of mlcp include:
- Bulk load billions of local files
- Split and load large, aggregate XML files or delimited text
- Bulk load billions of triples or quads from RDF files
- Archive and restore database contents across environments
- Export data from a database to a file system
- Copy subsets of data between databases
You can run mlcp across many threads on a single machine or across many nodes in a cluster. Mlcp can now run against MarkLogic clusters hosted on AWS/Azure.
The MarkLogic Connector for Hadoop is an extension to Hadoop’s MapReduce framework that allows you to easily and efficiently communicate with a MarkLogic database from within a Hadoop job. From 10.0-5, Hadoop Connector is removed from a separate release, but mlcp still uses Hadoop Connector as an internal dependency.
- Excluded all the transitive dependencies to improve security and maintenance.
- Upgraded Avro, Commons-cli, Commons-compress, Commons-io, Xml-apis, Jakarta.xml.soap-api, Jcl-over-slf4, and Commons-logging-api libraries to mitigate security vulnerabilities.
- Removed Zookeeper, Bliki-core, Logback-classic, and Htrace-core libraries to mitigate security vulnerabilities.
- Upgraded the Maven Javadoc plugin from 2.10.3 to 3.6.3 to mitigate security vulnerability.
- Removed all dependencies and repository references related to deprecated mapr.
- Now requires JRE 11 or later.
- Added support for reverse proxy and connection to MarkLogic Cloud.
- Upgraded Jena libraries from 2.13.0 to 4.9.0 to mitigate security vulnerability.
- Upgraded Jackson, Hadoop, Xstream, and Guava libraries to mitigate security vulnerabilities.
- Removed an unused json dependency to mitigate security vulnerability.
- Upgraded libthrift from 0.14.0 to 0.17.0 to mitigate security vulnerability.
- Upgraded Hadoop Library to 3.3.4
- Upgraded jackson-annotations, jackson-core, jackson-databind, Xerces, woodstox-core to mitigate security vulnerability.
- Bug fixes.
For official product documentation, please refer to:
Wiki pages of this project contain useful information when you work on development:
- Required Software for mlcp
- Apache Maven (version >= 3.0.3) is required to build mlcp and the Hadoop Connector.
Steps to build mlcp:
$ git clone https://github.com/marklogic/marklogic-contentpump.git
$ cd marklogic-contentpump
$ mvn clean package -DskipTests=trueThe build writes to the respective deliverable directory under the root directory marklogic-contentpump/.
For information on contributing to this project see CONTRIBUTING.md. For information on working on the development of this project see project wiki page.
The unit tests included in this repository are designed to provide illustrative examples of the APIs and to sanity check external contributions. MarkLogic Engineering runs a more comprehensive set of unit, integration, and performance tests internally. To run the unit tests, execute the following command from the marklogic-contentpump/ root directory:
$ mvn testFor detailed information about running unit tests, see Guideline to Run Tests.
If you have questions about mlcp or the Hadoop Connector, ask on StackOverflow. Tag your question with mlcp and marklogic. If you find a bug or would like to propose a new capability, file a GitHub issue.
mlcp and the Hadoop Connector are maintained by MarkLogic Engineering and distributed under the Apache 2.0 license. They are designed for use in production applications with MarkLogic Server. Everyone is encouraged to file bug reports, feature requests, and pull requests through GitHub. This input is critical and will be carefully considered. However, we can’t promise a specific resolution or timeframe for any request. In addition, MarkLogic provides technical support for release tags of mlcp and the Hadoop Connector to licensed customers under the terms outlined in the Support Handbook. For more information or to sign up for support, visit help.marklogic.com.