{"id":56517,"library":"hadoop-mapreduce-client-app","title":"Hadoop MapReduce Client App","description":"Client-side application component for Apache Hadoop MapReduce framework.","status":"active","version":"3.5.0","language":"java","source_language":null,"source_url":null,"tags":["hadoop","mapreduce","client","app"],"install":[{"cmd":"<dependency>\n  <groupId>org.apache.hadoop</groupId>\n  <artifactId>hadoop-mapreduce-client-app</artifactId>\n  <version>3.5.0</version>\n</dependency>","lang":"xml","label":"Maven"},{"cmd":"implementation 'org.apache.hadoop:hadoop-mapreduce-client-app:3.5.0'","lang":"groovy","label":"Gradle"}],"dependencies":[],"imports":[{"symbol":"MRAppMaster","correct":"org.apache.hadoop.mapreduce.v2.app.MRAppMaster"}],"quickstart":{"code":"import org.apache.hadoop.mapreduce.v2.app.MRAppMaster;\n\n// MRAppMaster is typically launched by the framework, not directly instantiated.\n// This is a placeholder for the main entry point.\nSystem.out.println(\"MapReduce Application Master class: \" + MRAppMaster.class.getName());","lang":"java","description":"References the MRAppMaster class, the main entry point for MapReduce application master."},"warnings":[{"fix":"Use higher-level MapReduce APIs (e.g., org.apache.hadoop.mapreduce) instead of direct v2.app classes.","message":"This module is internal to Hadoop and its API may change between minor versions.","severity":"breaking","affected_versions":"all"}],"env_vars":null,"search_vec":"'apach':11 'app':4,18 'applic':8 'client':3,6,17 'client-sid':5 'compon':9 'framework':14 'hadoop':1,12,15 'mapreduc':2,13,16 'side':7","created_at":"2026-06-15T10:39:29.406075+00:00","updated_at":"2026-06-15T10:39:29.406075+00:00","problems":[],"ecosystem":"maven","meta_description":null,"install_score":null,"quickstart_score":null,"quickstart_tag":null,"pypi_latest":null,"cli_name":null,"cli_version":null,"type":"library","homepage":null,"github":null,"docs":"https://appdoc.app/artifact/org.apache.hadoop/hadoop-mapreduce-client-app/","changelog":null,"pypi":null,"npm":null,"openapi_spec":null,"status_page":null,"smithery":null,"categories":["other"],"base_url":null,"auth_type":null,"provenance":{"verified_status":null,"verified_at":null,"last_verified":"2026-06-15","next_check":"2026-12-12","install_tag":null}}