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Jun 4, 2026 · Databases

How StarRocks and Iceberg Enable Federated Queries: A Practical Walkthrough

This article details Fresha's real‑world integration of StarRocks with Apache Iceberg, covering metadata planning, distributed execution, adaptive metadata retrieval, hot‑cold data layering, missing statistics handling, catalog configuration, and performance optimizations that together demonstrate how federated queries can be efficiently executed over data‑lake tables.

Apache IcebergData LakeFederated Query

0 likes · 14 min read

How StarRocks and Iceberg Enable Federated Queries: A Practical Walkthrough

WeiLi Technology Team

Jan 28, 2026 · Databases

How We Fixed Minute‑Level Data Rollbacks by Replacing Impala with Apache Doris

Facing mysterious minute‑level data rollbacks caused by Impala's metadata cache, a team migrated from a T+1 Hive‑Impala stack to Apache Doris, achieving real‑time consistency, higher performance, simplified ETL, and reduced operational complexity across their points‑based loyalty system.

Apache DorisData WarehouseImpala

0 likes · 9 min read

How We Fixed Minute‑Level Data Rollbacks by Replacing Impala with Apache Doris

Tencent Architect

Feb 23, 2021 · Artificial Intelligence

Analysis and Optimization of CephFS I/O Performance for AI Training on the Xingchen Compute Platform

This article investigates why AI training tasks on Tencent's Xingchen compute platform experience severe I/O slowdown when using CephFS, analyzes the underlying Ceph‑FUSE and MDS mechanisms, and proposes metadata‑caching and file‑caching optimizations that can accelerate training speed by three to four times.

AI trainingCeph-FUSECephFS

0 likes · 21 min read

Analysis and Optimization of CephFS I/O Performance for AI Training on the Xingchen Compute Platform