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The following commit(s) were added to refs/heads/main by this push:
new 239e43b56c 🔄 synced local 'docs/specification/' with remote
'docs/specification/'
239e43b56c is described below
commit 239e43b56cd76e861d92b85d0008ce02f9811f14
Author: chaokunyang <[email protected]>
AuthorDate: Wed May 27 00:33:30 2026 +0000
🔄 synced local 'docs/specification/' with remote 'docs/specification/'
---
docs/specification/java_serialization_spec.md | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/docs/specification/java_serialization_spec.md
b/docs/specification/java_serialization_spec.md
index d0a7e18a06..6ca5f9a7d5 100644
--- a/docs/specification/java_serialization_spec.md
+++ b/docs/specification/java_serialization_spec.md
@@ -576,11 +576,15 @@ without a `chunk_size` byte:
- non-null key and null value: special null-value header, then key payload.
- null key and null value: `KV_NULL` header only.
-`EnumMap` writes one serializer-owned payload mode byte before its normal map
-payload:
+`EnumMap` writes its entry count, key enum class metadata, and then its normal
+map entry payload:
+
+```text
+| varuint32_small7 size | key enum class metadata | chunk... |
+```
-- `0`: normal payload follows.
-- `1`: Java-serialized empty `EnumMap` payload.
+The key enum class metadata is present even when `size` is zero so an empty
+`EnumMap` can be reconstructed with the original key type.
### Map Subclasses
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