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[format] Support Map<X, Blob> type for Blob File Format#8635

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steFaiz wants to merge 2 commits into
apache:masterfrom
steFaiz:map_blob
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[format] Support Map<X, Blob> type for Blob File Format#8635
steFaiz wants to merge 2 commits into
apache:masterfrom
steFaiz:map_blob

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@steFaiz steFaiz commented Jul 15, 2026

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Purpose

Supports writing Map<X, Blob> in BlobFormatTable, following #8181

This PR only focus on Blob File Format of Java module, keeping this PR reasonably small.
This PR DO NOT involes:

  1. python module
  2. end-to-end support of Map<X, Blob> Type
  3. Spark/Flink MergeInto support

Key Changes:

  1. extract a new BlobElementSerializer to deal with blob elements: raw, array and map
  2. implement BlobElementSerializer for Map<X, Blob>, where X only supports some simple non-nested type: String and Int family.

Tests

See unit tests

@steFaiz steFaiz marked this pull request as draft July 15, 2026 03:28
@steFaiz steFaiz changed the title [core] Support Map<X, Blob> type for Blob File Format [format] Support Map<X, Blob> type for Blob File Format Jul 15, 2026
@steFaiz steFaiz marked this pull request as ready for review July 15, 2026 04:05
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