From 92f2b520c73707fe381374eba9187374f4e242f1 Mon Sep 17 00:00:00 2001
From: Sam Greenbury <sgreenbury@turing.ac.uk>
Date: Thu, 5 Oct 2023 17:22:27 +0100
Subject: [PATCH] Set allow_null_fields to true in tracing options

---
 src/writers.rs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/writers.rs b/src/writers.rs
index f652206..1ae2409 100644
--- a/src/writers.rs
+++ b/src/writers.rs
@@ -43,7 +43,13 @@ where
     V: Serialize,
 {
     fn write_parquet(&self, output: &str) -> Result<()> {
-        let fields = serialize_into_fields(self, TracingOptions::default())?;
+        let fields = serialize_into_fields(
+            self,
+            TracingOptions {
+                allow_null_fields: true,
+                ..Default::default()
+            },
+        )?;
         let arrays = serialize_into_arrays(&fields, self)?;
         write_chunk(output, Schema::from(fields), Chunk::new(arrays))?;
         Ok(())