Trino to Hive Migration

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Provides expert assistance for migrating SQL queries from Trino to Hive, specifically targeting scenarios where Trino encounters memory limits, timeouts, or high-cardinality processing issues. It simplifies the migration process by offering specific syntax mapping for time functions, regular expressions, and aggregations, while highlighting the scalability benefits of Hive’s disk-based processing. By using this skill, developers can resolve 'Query exceeded memory limit' errors and optimize long-running batch ETL workflows for stability and cost-efficiency within Treasure Data environments.

Características Principales

• Comparative analysis of execution engines to select the best fit for specific workloads
• Implementation of Hive-specific optimizations like MAPJOIN hints
• Guidance for handling high-cardinality GROUP BY and complex JOIN operations
• Syntax conversion mapping for time, array, and string functions
• Troubleshooting guidance for Trino memory and timeout errors
• 2 GitHub stars

Casos de Uso

• Resolving 'Query exceeded per-node memory limit' errors in Trino
• Migrating interactive queries to stable batch ETL jobs for large-scale data processing
• Converting Trino-specific functions like td_time_string to Hive-compatible alternatives