Sorted:

Hive Fault Tolerance & Recovery Strategies

Storm Parallelism: Dynamic Spout & Bolt Adjustment

EventLoggingBolt in Storm: Functions & Uses

Hive vs Relational Databases: Key Differences

Storm Data Sources & Targets Explained

Storm Topology Deployment Issues

Storm Multi-Language Support Guide

Storm Topology Upgrade Without Downtime

Storm StateSnapshotting Explained

Storm Acknowledgment & Anchoring Explained