Hadoop1 131004105935-phpapp02
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  • 1. Hadoop 1.x vs Hadoop 2 Rommel Garcia Solutions Engineer - Big Data Hortonworks
  • 2. Transition To Big Data Relational Dimensional (EDW) Big Data
  • 3. Data Explosion
  • 4. 3 Design Dimensions
  • 5. Key Hadoop Data Types Sentiment Clickstream Sensor/Machine Geographic Server Logs Text
  • 6. Hadoop is NOT ESB NoSQL HPC Relational Real-time The “Jack of all Trades”
  • 7. Hadoop 1 Limited up to 4,000 nodes per cluster O(# of tasks in a cluster) JobTracker bottleneck - resource management, job scheduling and monitoring Only has one namespace for managing HDFS Map and Reduce slots are static Only job to run is MapReduce
  • 8. Hadoop 1 - Basics MapReduce (Computation Framework) A A B B C C C C B B B B C C A A A A A A HDFS (Storage Framework)
  • 9. Hadoop 1 - Reading Files NameNode read file Hadoop Client SNameNode (fsimage/edit) return DNs, block ids, etc. checkpoint heartbeat/ block report read blocks DN | TT DN | TT DN | TT DN | TT DN | TT DN | TT DN | TT DN | TT DN | TT DN | TT DN | TT DN | TT Rack1 Rack2 Rack3 RackN
  • 10. Hadoop 1 - Writing Files NameNode request write Hadoop Client SNameNode (fsimage/edit) checkpoint return DNs, etc. block report write blocks DN | TT DN | TT DN | TT DN | TT DN | TT DN | TT DN | TT DN | TT DN | TT DN | TT DN | TT DN | TT Rack1 Rack2 Rack3 RackN replication pipelining
  • 11. Hadoop 1 - Running Jobs Hadoop Client submit job JobTracker map deploy job shuffle part 0 part 0 DN | TT DN | TT DN | TT DN | TT reduce DN | TT DN | TT DN | TT DN | TT DN | TT DN | TT DN | TT DN | TT Rack1 Rack2 Rack3 RackN
  • 12. Hadoop 1 - Security authN/authZ LDAP/AD Users Users F I R E W A L L KDC service request Hadoop Cluster block token delegate token Client Node/ Spoke Server Encryption Plugin * block token is for accessing data * delegate token is for running jobs
  • 13. Hadoop 1 - APIs org.apache.hadoop.mapreduce.Partitioner org.apache.hadoop.mapreduce.Mapper org.apache.hadoop.mapreduce.Reducer org.apache.hadoop.mapreduce.Job
  • 14. Hadoop 2 Potentially up to 10,000 nodes per cluster O(cluster size) Supports multiple namespace for managing HDFS Efficient cluster utilization (YARN) MRv1 backward and forward compatible Any apps can integrate with Hadoop Beyond Java
  • 15. Hadoop 2 - Basics
  • 16. Hadoop 2 - Reading Files (w/ NN Federation) (w/ NN Federation) Hadoop Client NN1/ns1 NN2/ns2 NN3/ns3 NN4/ns4 SNameNode per NN fsimage/edit copy read file checkpoint return DNs, block ids, etc. read blocks fs sync or Backup NN per NN checkpoint register/ heartbeat/ block report Block Pools DN | NM DN | NM DN | NM DN | NM DN | NM DN | NM DN | NM DN | NM DN | NM DN | NM DN | NM DN | NM Rack1 Rack2 Rack3 RackN ns1 ns2 ns3 ns4 dn1, dn2 dn1, dn3 dn4, dn5 dn4, dn5
  • 17. Hadoop 2 - Writing Files SNameNode per NN Hadoop Client NN1/ns1 NN2/ns2 NN3/ns3 NN4/ns4 request write fsimage/edit copy checkpoint or return DNs, etc. fs sync write blocks block report DN | NM DN | NM DN | NM DN | NM DN | NM DN | NM DN | NM DN | NM DN | NM DN | NM checkpoint DN | NM DN | NM Backup NN per NN Rack1 Rack2 Rack3 RackN replication pipelining
  • 18. Hadoop 2 - Running Jobs create app1 Hadoop Client 1 submit app1 ASM NM ResourceManager .......negotiates....... Containers .......reports to....... ASM Scheduler .......partitions.......Resources create app2 Hadoop Client 2 submit app2 Scheduler ASM queues status report NodeManager C2.1 NodeManager C2.2 NodeManager AM2 Rack1 NodeManager NodeManager C1.3 NodeManager C2.3 C1.2 NodeManager AM1 Rack2 NodeManager C1.4 NodeManager C1.1 RackN
  • 19. Hadoop 2 - Security DMZ KDC LDAP/AD Knox Gateway Cluster Enterprise/ Cloud SSO Provider JDBC Client F I R E W A L L F I R E W A L L Hadoop Cluster REST Client Browser(HUE) Native Hive/HBase Encryption
  • 20. Hadoop 2 - APIs org.apache.hadoop.yarn.api.ApplicationClientProtocol org.apache.hadoop.yarn.api.ApplicationMasterProtocol org.apache.hadoop.yarn.api.ContainerManagementProtoc ol
  • 21. Resources http://hortonworks.com/products/hortonworks-sandbox/ http://hortonworks.com/products/hdp-2/ http://hortonworks.com/resources/ http://hadoopsummit.org/san-jose/
  • 22. Hadoop Summit 2014
  • 23. Thank you! www.linkedin.com/in/rommelgarcia twitter.com/rommelgarcia rgarcia@hortonworks.com Hortonworks