Page History

• Iceberg Integration

  • Advanced Snapshot Managementmanagement
  • Support for Branches & Tags
  • Support for Positional Deletes
  • support
  • DML (update/delete/merge)
  • Support for COW & MOR modes
  • Vectorised Reads & Writes
  • Support for queries with Partition clause
  • Support for LOAD DATA queries
  • LOAD DATA statements support
  • Partition-level operations support
  • Improved statistics (column stats support)
  • Maintenance (Major compaction)Better Statistics Management

• Hive ACID

  • Use sequences for TXN_ID generation (performance)
  • Read-only transactions optimization
  • Zero-wait readers
  • Optimistic and Pessimistic concurrency control 
  • Lockless reads

...

• Compaction

  • Rebalance compaction (Hive ACID)
  • Compaction requests prioritization (compaction pooling) 
  Iceberg compaction (Major)

• Hive Metastore

  • API optimization (performance)
  • Dynamic leader election

  • External data sources support

  • HMS support for Thrift over HTTP
  • JWT authentication for Thrift over HTTP
  • HMS metadata summary

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