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040000 tree 7cdb023da1150f826da9b6b2e16a49fcc902afb4	hello-world-hadoop
040000 tree c53b7de02d3d87772dd9777524cf55badc402c76	hello-world-sql
040000 tree 90cdc90be31ba283cae7c6ef5ad03347f4351231	hello-world-webapp
100644 blob 23ec47734ae40d40e31c59b8dda81c37586d357d	pom.xml