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new 84d525a Correct `primitive_null.value` (#86)
84d525a is described below
commit 84d525a8731cec345852fb4ea2e7c581fbf2ef29
Author: Andrew Lamb <[email protected]>
AuthorDate: Mon Jun 9 03:17:43 2025 -0400
Correct `primitive_null.value` (#86)
---
variant/README.md | 9 ++++++++-
variant/primitive_null.value | Bin 0 -> 1 bytes
2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/variant/README.md b/variant/README.md
index e335caf..418dfa7 100644
--- a/variant/README.md
+++ b/variant/README.md
@@ -49,7 +49,7 @@ The files in this directory were initially generated by
running the [`regen.py`]
script which used Apache Spark to generate the files. The files have been
subsequently modified
when necessary to ensure that they conform to the Parquet spec.
-### Modification 1: Created metadata for `primitive_null` as a single byte
(`0x01`)
+### Modification 1: Created metadata and value for `primitive_null` as a
single byte (`0x01`)
Per <https://github.com/apache/parquet-testing/issues/81>, Spark did not
generate
any metadata for `null` and left `primitive_null.metadata` empty.
@@ -62,5 +62,12 @@ The metadata for `primitive_null` should be the same 3 bytes
as other primitive
cp primitive_int8.metadata primitive_null.metadata
```
+The value for a primitive should be a `value_header` and no `value_data`,
+resulting in a single `0` byte:
+
+```shell
+echo -n 'a' | tr a '\0' > primitive_null.value
+```
+
[Variant]:
https://github.com/apache/parquet-format/blob/master/VariantEncoding.md
[primitive types listed in the spec]:
https://github.com/apache/parquet-format/blob/master/VariantEncoding.md#value-data-for-primitive-type-basic_type0
diff --git a/variant/primitive_null.value b/variant/primitive_null.value
index e69de29..f76dd23 100644
Binary files a/variant/primitive_null.value and b/variant/primitive_null.value
differ
