4.0.0 HTRC Extracted Features Solr Ingest analytics.hathitrust.org org.hathitrust htrc-ef-ingest 0.9 jar org.apache.spark spark-core_2.11 2.0.1 provided org.apache.commons commons-compress 1.10 org.json json 20160212 commons-cli commons-cli 1.2 org.apache.maven.plugins maven-compiler-plugin 2.3.2 1.7 1.7 org.apache.maven.plugins maven-assembly-plugin org.hathitrust.PrepareForIngest