Presslufthammer --------------- Building: The project uses maven so a simple "mvn package" Is enough to build everything. The result is then available in the directory target/presslufthammer-0.1-bin/presslufthammer-0.1/ Importing data: Data is imported in columnar format using: bin/import-data.sh Usage: schema-file json-file records-per-partition data-dir or alternatively bin/import-example-data.sh Usage: data-dir Which will import the Document and Sentence test datasets with reasonable partition sizes. The data-dir is the directory where the columnar data is stored, this must later be passed to the leaf on startup. Usage: For performing queries the Coordinator and at least one leaf must be started: bin/start-coordinator.sh port config bin/start-leaf.sh coordinator-ip port data-dir For example: bin/start-coordinator.sh 44444 config.json bin/start-leaf.sh localhost 44444 data-dir Then the client can be started: bin/start-client.sh coordinator-ip port When the commandline client is started you can enter queries or exit by entering x Some queries you might want to try on the example data: SELECT * FROM Document SELECT * FROM Document WHERE Document.Name.Language.Country == "gb" SELECT * FROM Sentence SELECT * FROM Sentence WHERE Sentence.predicate.arguments.role == "PMOD" OR Sentence.predicate.arguments.role == "NMOD" SELECT * FROM Sentence WHERE Sentence.predicate.arguments.role == "ADV" OR Sentence.predicate.arguments.role == "DEP" SELECT Document.DocId AS ID, COUNT(Document.Links.Forward) AS bla FROM Document SELECT COUNT(Sentence.predicate.text) FROM Sentence SELECT Sentence.predicate.text, COUNT(Sentence.predicate.arguments.text) FROM Sentence WHERE Sentence.predicate.arguments.role == "ADV" SELECT Sentence.predicate.text, COUNT(Sentence.predicate.arguments.text) FROM Sentence