increase default chunk size

Fred1155 · Fred1155 · commit dcaf039de6b4 · 2025-11-03T16:10:40.000-08:00
diff --git a/.changes/next-release/bugfix-AWSSDKforJavav2-8d76030.json b/.changes/next-release/bugfix-AWSSDKforJavav2-8d76030.json
@@ -0,0 +1,6 @@
+{
+    "type": "bugfix",
+    "category": "AWS SDK for Java v2",
+    "contributor": "",
+    "description": "Increased the default chunk size for async trailer based checksum data transfer request from 16KB to 64KB"
+}
diff --git a/core/sdk-core/src/main/java/software/amazon/awssdk/core/HttpChecksumConstant.java b/core/sdk-core/src/main/java/software/amazon/awssdk/core/HttpChecksumConstant.java
@@ -42,7 +42,7 @@ public final class HttpChecksumConstant {
     /**
      * Default chunk size for Async trailer based checksum data transfer*
      */
-    public static final int DEFAULT_ASYNC_CHUNK_SIZE = 16 * 1024;
+    public static final int DEFAULT_ASYNC_CHUNK_SIZE = 64 * 1024;
 
     private HttpChecksumConstant() {
     }

Original file line number	Diff line number	Diff line change
`@@ -42,7 +42,7 @@ public final class HttpChecksumConstant {`
`42`	`42`	`/**`
`43`	`43`	`* Default chunk size for Async trailer based checksum data transfer*`
`44`	`44`	`*/`
`45`		`- public static final int DEFAULT_ASYNC_CHUNK_SIZE = 16 * 1024;`
	`45`	`+ public static final int DEFAULT_ASYNC_CHUNK_SIZE = 64 * 1024;`
`46`	`46`
`47`	`47`	`private HttpChecksumConstant() {`
`48`	`48`	`}`