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DataFunTalk
DataFunTalk
Mar 23, 2022 · Big Data

Iceberg Data Lake Query Optimization Practices and Governance

This talk by Tencent senior engineer Chen Liang covers Iceberg table format fundamentals, data lake ingestion, query processing, hidden partitioning, time‑travel, major features, optimization techniques such as compaction, bin‑packing, sorting and Z‑ordering, and outlines a future roadmap for improving performance and governance in big‑data environments.

FlinkQuery OptimizationZ-Ordering
0 likes · 12 min read
Iceberg Data Lake Query Optimization Practices and Governance
JD Tech
JD Tech
Apr 20, 2021 · Databases

Space-Filling Curves for Efficient Multidimensional Data Storage and Querying

This article introduces space-filling curves such as Z‑ordering, Hilbert, and XZ‑Ordering, explaining their mapping algorithms and how they transform multidimensional spatial data into one‑dimensional indices for efficient storage and querying in key‑value databases, while discussing challenges and practical examples.

Space-filling CurvesXZ-OrderingZ-Ordering
0 likes · 12 min read
Space-Filling Curves for Efficient Multidimensional Data Storage and Querying