From 2d1a3b9347de8d89007cd515c624a0b55ee5a356 Mon Sep 17 00:00:00 2001
From: David Mollitor <dmollitor@apache.org>
Date: Sat, 4 Jan 2025 14:26:40 -0500
Subject: [PATCH] Reduce buffer size for ASCII string optimization to 63 bytes

---
 .../src/main/java/org/apache/avro/io/BinaryEncoder.java   | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/lang/java/avro/src/main/java/org/apache/avro/io/BinaryEncoder.java b/lang/java/avro/src/main/java/org/apache/avro/io/BinaryEncoder.java
index f8f9802edb7..97d9895c74f 100644
--- a/lang/java/avro/src/main/java/org/apache/avro/io/BinaryEncoder.java
+++ b/lang/java/avro/src/main/java/org/apache/avro/io/BinaryEncoder.java
@@ -37,8 +37,12 @@
  */
 public abstract class BinaryEncoder extends Encoder {
 
-  // Buffer used for writing ASCII strings
-  private final byte[] stringBuffer = new byte[128];
+  /*
+   * Buffer used for writing ASCII strings. A string is encoded as a long followed
+   * by that many bytes of character data. A string of length 63 is the upper
+   * limit for a 1 byte variable-length long value.
+   */
+  private final byte[] stringBuffer = new byte[63];
 
   @Override
   public void writeNull() throws IOException {