Page Comparison

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•  Send supported HBase version by CDAP
• Gather information about CDH version compatibility changes – Talk to Cloudera and compile 
  

Failure Scenarios

• HDFS
  • Upgrade
  • Downgrade
  • Restart
  • Data Node Outage
• HBase
  • Upgrade
  • Downgrade
  • Restart
  • Region Server Outage
• Zookeeper
  • Upgrade
  • Downgrade
  • Network Partition 
• YARN
  • Upgrade
  • Downgrade
  • Node Manager Outage
  • RM Outage
• Kafka
  • Upgrade
  • Downgrade
  • Disk Outage
• KMS
  • Upgrade 
  • Downgrade 
  • Outage

• [3.6] CDAP Service version and upgrade support
• [3.6] Application versioning
• [4.0] Messaging Service with goal of centralizing all transactional activities for metadata in HBase
• [4.0?] Non-Transactional datasets
• [4.0?] HBase Coprocessor Upgrade Management — Handling minor version changes efficiently without disabling HBase Tables. 
• [4.0?] Upgrade tool improvements — Coprocessor Upgrade removal, faster data conversions if needed, smarts to reduce the impact to running services
• [4.0?] CDAP Service Upgrade capability, might have Apache Twill change
• [4.0?] Move configuration and operational updates to messaging services

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