Antalya 26.1: Support for 'time' type in Iceberg, reading only

[ianton-ru]

Changelog category (leave one):

• Bug Fix (user-visible misbehavior in an official stable release)

Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):

Support for 'time' type in Iceberg, reading only.

Documentation entry for user-facing changes

Solved #1535
This changes time format,.
Was - seconds from midnight:

SELECT * FROM datalake.`namespace.table`

43200

Now - time with microseconds

SELECT * FROM datalake.`namespace.table`

12:00:00.000000

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[github-actions]

Workflow [PR], commit [f0e1038]

[arthurpassos]

in the issue it is mentioned

Issue is present on 25.8, 26.1 altinityalntalya, but not present on 25.8, 26.1 upstream.

So my first guess would be it is a backport, but it doesn't look like. Looking at the diff, i see:

    case TypeIndex::Time64:

        assert_cast<ColumnDecimal<Time64> &>(column).insertValue(static_cast<Int64>(value));
        break;

which is not present in upstream https://github.com/ClickHouse/ClickHouse/blob/master/src/Processors/Formats/Impl/AvroRowInputFormat.cpp. Why?

[arthurpassos]

@codex review

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Support Time64 in manifest Avro type mapping

After f_time is remapped to DataTypeTime64(6), inserts into Iceberg tables partitioned by a time column can fail in the write path: ChunkPartitioner::getResultTypes() returns Time64, generateManifestFile() passes that into extendSchemaForPartitions(), and getAvroType() still has no TypeIndex::Time64 branch (it only handles TypeIndex::Time), so it throws Unsupported type for iceberg Time64(...). This is a regression from the previous Int64 mapping because writes for time-partitioned tables now error during manifest generation.

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