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Unity Catalog vs Hive Metastore

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โ€ข1 min read
Unity Catalog vs Hive Metastore
N
Naveen Pn

I am a Tech Enthusiast having 13+ years of experience in ๐ˆ๐“ as a ๐‚๐จ๐ง๐ฌ๐ฎ๐ฅ๐ญ๐š๐ง๐ญ, ๐‚๐จ๐ซ๐ฉ๐จ๐ซ๐š๐ญ๐ž ๐“๐ซ๐š๐ข๐ง๐ž๐ซ, ๐Œ๐ž๐ง๐ญ๐จ๐ซ, with 12+ years in training and mentoring in ๐’๐จ๐Ÿ๐ญ๐ฐ๐š๐ซ๐ž ๐„๐ง๐ ๐ข๐ง๐ž๐ž๐ซ๐ข๐ง๐ , ๐ƒ๐š๐ญ๐š ๐„๐ง๐ ๐ข๐ง๐ž๐ž๐ซ๐ข๐ง๐ , ๐“๐ž๐ฌ๐ญ ๐€๐ฎ๐ญ๐จ๐ฆ๐š๐ญ๐ข๐จ๐ง ๐š๐ง๐ ๐ƒ๐š๐ญ๐š ๐’๐œ๐ข๐ž๐ง๐œ๐ž. I have ๐’•๐’“๐’‚๐’Š๐’๐’†๐’… ๐’Ž๐’๐’“๐’† ๐’•๐’‰๐’‚๐’ 10,000+ ๐‘ฐ๐‘ป ๐‘ท๐’“๐’๐’‡๐’†๐’”๐’”๐’Š๐’๐’๐’‚๐’๐’” and ๐’„๐’๐’๐’…๐’–๐’„๐’•๐’†๐’… ๐’Ž๐’๐’“๐’† ๐’•๐’‰๐’‚๐’ 500+ ๐’•๐’“๐’‚๐’Š๐’๐’Š๐’๐’ˆ ๐’”๐’†๐’”๐’”๐’Š๐’๐’๐’” in the areas of ๐’๐จ๐Ÿ๐ญ๐ฐ๐š๐ซ๐ž ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ, ๐ƒ๐š๐ญ๐š ๐„๐ง๐ ๐ข๐ง๐ž๐ž๐ซ๐ข๐ง๐ , ๐‚๐ฅ๐จ๐ฎ๐, ๐ƒ๐š๐ญ๐š ๐€๐ง๐š๐ฅ๐ฒ๐ฌ๐ข๐ฌ, ๐ƒ๐š๐ญ๐š ๐•๐ข๐ฌ๐ฎ๐š๐ฅ๐ข๐ณ๐š๐ญ๐ข๐จ๐ง๐ฌ, ๐€๐ซ๐ญ๐ข๐Ÿ๐ข๐œ๐ข๐š๐ฅ ๐ˆ๐ง๐ญ๐ž๐ฅ๐ฅ๐ข๐ ๐ž๐ง๐œ๐ž ๐š๐ง๐ ๐Œ๐š๐œ๐ก๐ข๐ง๐ž ๐‹๐ž๐š๐ซ๐ง๐ข๐ง๐ . I am interested in ๐ฐ๐ซ๐ข๐ญ๐ข๐ง๐  ๐›๐ฅ๐จ๐ ๐ฌ, ๐ฌ๐ก๐š๐ซ๐ข๐ง๐  ๐ญ๐ž๐œ๐ก๐ง๐ข๐œ๐š๐ฅ ๐ค๐ง๐จ๐ฐ๐ฅ๐ž๐๐ ๐ž, ๐ฌ๐จ๐ฅ๐ฏ๐ข๐ง๐  ๐ญ๐ž๐œ๐ก๐ง๐ข๐œ๐š๐ฅ ๐ข๐ฌ๐ฌ๐ฎ๐ž๐ฌ, ๐ซ๐ž๐š๐๐ข๐ง๐  ๐š๐ง๐ ๐ฅ๐ž๐š๐ซ๐ง๐ข๐ง๐  new subjects.

What is Hive Metastore

  • Legacy metadata store for tables and schemas

  • Linked to single Databricks workspace

  • Stores based info : table names, locations, schema

Limitation

  • No centralized security across workspaces

  • No column level access control

  • Harder to manage data governance at scale

What is Unity Catalog

  • Centralized metadata + security layer across all workspaces

  • Fine-grained access control : tables, columns, rows

  • Built-in data lineage tracking

  • Supports multi-cloud environments (AWS, Azure, GCP)

  • One place to manage permissions, audits, and discovery across your entire organization.

#data-engineering
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