# Server-Side Scan Planning in the Iceberg REST Catalog Explained

DevFeed: [Server-Side Scan Planning in the Iceberg REST Catalog Explained](<https://devfeed.tech/articles/server-side-scan-planning-in-the-iceberg-rest-catalog-explained-59929.md>)

Original publisher: [Read original article](<https://www.dremio.com/blog/server-side-scan-planning-in-the-iceberg-rest-catalog-explained/>)

Author: Alex Merced

Published: 2026-09-25T12:43:08Z

Content type: article

Language: en

Sources: [Dremio](<https://devfeed.tech/sources/dremio.md>)

Topics: [Apache Iceberg](<https://devfeed.tech/topics/apache-iceberg.md>), [REST](<https://devfeed.tech/topics/rest.md>), [client](<https://devfeed.tech/topics/client.md>), [Server](<https://devfeed.tech/topics/server.md>), [cancellation](<https://devfeed.tech/topics/cancellation.md>), [Latency](<https://devfeed.tech/topics/latency.md>), [Task](<https://devfeed.tech/topics/task.md>)

Tags: [apache-iceberg](<https://devfeed.tech/tags/apache-iceberg.md>), [asynchronous](<https://devfeed.tech/tags/asynchronous.md>), [batching](<https://devfeed.tech/tags/batching.md>), [cancellation](<https://devfeed.tech/tags/cancellation.md>), [data-lakehouse](<https://devfeed.tech/tags/data-lakehouse.md>), [dremio-blog-open-data-insights](<https://devfeed.tech/tags/dremio-blog-open-data-insights.md>), [iceberg](<https://devfeed.tech/tags/iceberg.md>), [latency](<https://devfeed.tech/tags/latency.md>), [rest](<https://devfeed.tech/tags/rest.md>), [server](<https://devfeed.tech/tags/server.md>), [tradeoffs](<https://devfeed.tech/tags/tradeoffs.md>)

## AI overview

This article explains how Iceberg server-side scan planning moves manifest processing from clients to a REST catalog service. It covers capability discovery, synchronous and asynchronous scan requests, polling, cancellation, batched task delivery, operational tradeoffs, and rollout considerations.

## Source excerpt

Learn how Iceberg REST server-side scan planning works, including capabilities, asynchronous plans, polling, cancellation, batching, and tradeoffs. The post Server-Side Scan Planning in the Iceberg REST Catalog Explained appeared first on Dremio.