nastra commented on code in PR #12182:
URL: https://github.com/apache/iceberg/pull/12182#discussion_r1944722545
##########
format/spec.md:
##########
@@ -587,32 +587,32 @@ The schema of a manifest file is a struct called
`manifest_entry` with the follo
`data_file` is a struct with the following fields:
-| v1 | v2 | v3 | Field id, name |
Type |
Description
|
-| ----------
|------------|------------|-----------------------------------|-----------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| | _required_ | _required_ | **`134 content`** |
`int` with meaning: `0: DATA`, `1: POSITION DELETES`, `2: EQUALITY DELETES` |
Type of content stored by the data file: data, equality deletes, or position
deletes (all v1 files are data files)
|
-| _required_ | _required_ | _required_ | **`100 file_path`** |
`string` |
Full URI for the file with FS scheme
|
-| _required_ | _required_ | _required_ | **`101 file_format`** |
`string` |
String file format name, `avro`, `orc`, `parquet`, or `puffin`
|
-| _required_ | _required_ | _required_ | **`102 partition`** |
`struct<...>` |
Partition data tuple, schema based on the partition spec output using partition
field ids for the struct field ids
|
-| _required_ | _required_ | _required_ | **`103 record_count`** |
`long` |
Number of records in this file, or the cardinality of a deletion vector
|
-| _required_ | _required_ | _required_ | **`104 file_size_in_bytes`** |
`long` |
Total file size in bytes
|
-| _required_ | | | ~~**`105 block_size_in_bytes`**~~ |
`long` |
**Deprecated. Always write a default in v1. Do not write in v2 or v3.**
|
-| _optional_ | | | ~~**`106 file_ordinal`**~~ |
`int` |
**Deprecated. Do not write.**
|
-| _optional_ | | | ~~**`107 sort_columns`**~~ |
`list<112: int>` |
**Deprecated. Do not write.**
|
-| _optional_ | _optional_ | _optional_ | **`108 column_sizes`** |
`map<117: int, 118: long>` |
Map from column id to the total size on disk of all regions that store the
column. Does not include bytes necessary to read other columns, like footers.
Leave null for row-oriented formats (Avro) |
-| _optional_ | _optional_ | _optional_ | **`109 value_counts`** |
`map<119: int, 120: long>` |
Map from column id to number of values in the column (including null and NaN
values)
|
-| _optional_ | _optional_ | _optional_ | **`110 null_value_counts`** |
`map<121: int, 122: long>` |
Map from column id to number of null values in the column
|
-| _optional_ | _optional_ | _optional_ | **`137 nan_value_counts`** |
`map<138: int, 139: long>` |
Map from column id to number of NaN values in the column
|
-| _optional_ | _optional_ | _optional_ | **`111 distinct_counts`** |
`map<123: int, 124: long>` |
Map from column id to number of distinct values in the column; distinct counts
must be derived using values in the file by counting or using sketches, but not
using methods like merging existing distinct counts |
-| _optional_ | _optional_ | _optional_ | **`125 lower_bounds`** |
`map<126: int, 127: binary>` |
Map from column id to lower bound in the column serialized as binary [1]. Each
value must be less than or equal to all non-null, non-NaN values in the column
for the file [2] |
-| _optional_ | _optional_ | _optional_ | **`128 upper_bounds`** |
`map<129: int, 130: binary>` |
Map from column id to upper bound in the column serialized as binary [1]. Each
value must be greater than or equal to all non-null, non-Nan values in the
column for the file [2] |
-| _optional_ | _optional_ | _optional_ | **`131 key_metadata`** |
`binary` |
Implementation-specific key metadata for encryption
|
-| _optional_ | _optional_ | _optional_ | **`132 split_offsets`** |
`list<133: long>` |
Split offsets for the data file. For example, all row group offsets in a
Parquet file. Must be sorted ascending
|
-| | _optional_ | _optional_ | **`135 equality_ids`** |
`list<136: int>` |
Field ids used to determine row equality in equality delete files. Required
when `content=2` and should be null otherwise. Fields with ids listed in this
column must be present in the delete file |
-| _optional_ | _optional_ | _optional_ | **`140 sort_order_id`** |
`int` |
ID representing sort order for this file [3].
|
-| | | _optional_ | **`142 first_row_id`** |
`long` |
The `_row_id` for the first row in the data file. See [First Row ID
Inheritance](#first-row-id-inheritance)
|
-| | _optional_ | _optional_ | **`143 referenced_data_file`** |
`string` |
Fully qualified location (URI with FS scheme) of a data file that all deletes
reference [4]
|
-| | | _optional_ | **`144 content_offset`** |
`long` |
The offset in the file where the content starts [5]
|
-| | | _optional_ | **`145 content_size_in_bytes`** |
`long` |
The length of a referenced content stored in the file; required if
`content_offset` is present [5]
|
+| v1 | v2 | v3 | Field id, name |
Type |
Description
|
+| ----------
|------------|------------|-----------------------------------|-----------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| | _required_ | _required_ | **`134 content`** |
`int` with meaning: `0: DATA`, `1: POSITION DELETES`, `2: EQUALITY DELETES` |
Type of content stored by the data file: data, equality deletes, or position
deletes (all v1 files are data files)
|
+| _required_ | _required_ | _required_ | **`100 file_path`** |
`string` |
Full URI for the file with FS scheme
|
+| _required_ | _required_ | _required_ | **`101 file_format`** |
`string` |
String file format name, `avro`, `orc`, `parquet`, or `puffin`
|
+| _required_ | _required_ | _required_ | **`102 partition`** |
`struct<...>` |
Partition data tuple, schema based on the partition spec output using partition
field ids for the struct field ids
|
+| _required_ | _required_ | _required_ | **`103 record_count`** |
`long` |
Number of records in this file, or the cardinality of a deletion vector
|
+| _required_ | _required_ | _required_ | **`104 file_size_in_bytes`** |
`long` |
Total file size in bytes
|
+| _required_ | | | ~~**`105 block_size_in_bytes`**~~ |
`long` |
**Deprecated. Always write a default in v1. Do not write in v2 or v3.**
|
+| _optional_ | | | ~~**`106 file_ordinal`**~~ |
`int` |
**Deprecated. Do not write.**
|
+| _optional_ | | | ~~**`107 sort_columns`**~~ |
`list<112: int>` |
**Deprecated. Do not write.**
|
+| _optional_ | _optional_ | _optional_ | **`108 column_sizes`** |
`map<117: int, 118: long>` |
Map from column id to the total size on disk of all regions that store the
column. Does not include bytes necessary to read other columns, like footers.
Leave null for row-oriented formats (Avro) |
+| _optional_ | _optional_ | _optional_ | **`109 value_counts`** |
`map<119: int, 120: long>` |
Map from column id to number of values in the column (including null and NaN
values)
|
+| _optional_ | _optional_ | _optional_ | **`110 null_value_counts`** |
`map<121: int, 122: long>` |
Map from column id to number of null values in the column
|
+| _optional_ | _optional_ | _optional_ | **`137 nan_value_counts`** |
`map<138: int, 139: long>` |
Map from column id to number of NaN values in the column
|
+| _optional_ | _optional_ | | ~~**`111 distinct_counts`**~~ |
`map<123: int, 124: long>` |
**Deprecated. Do not write.**
|
Review Comment:
can we make this change without having to update the entire table?
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