ivandika3 commented on code in PR #10196:
URL: https://github.com/apache/ozone/pull/10196#discussion_r3195640401


##########
hadoop-ozone/s3gateway/src/main/java/org/apache/hadoop/ozone/s3/endpoint/ObjectEndpoint.java:
##########
@@ -198,12 +200,23 @@ Response handlePutRequest(ObjectRequestContext context, 
String keyPath, InputStr
     final long startNanos = context.getStartNanos();
 
     String copyHeader = null;
+    FileBackedOutputStream spooledBody = null;
     MultiDigestInputStream multiDigestInputStream = null;
     try {
       OzoneVolume volume = context.getVolume();
       OzoneBucket bucket = context.getBucket();
       final String lengthHeader = 
getHeaders().getHeaderString(HttpHeaders.CONTENT_LENGTH);
+      final String rawAmzContentSha256Header = 
getHeaders().getHeaderString(S3Consts.X_AMZ_CONTENT_SHA256);
+      final boolean hasMultiChunksUpload =
+          rawAmzContentSha256Header != null && 
hasMultiChunksPayload(rawAmzContentSha256Header);
+      boolean hasCalculatedLength = false;
       long length = lengthHeader != null ? Long.parseLong(lengthHeader) : 0;
+      if (lengthHeader == null && body != null && !hasMultiChunksUpload) {
+        spooledBody = new FileBackedOutputStream(32);
+        length = IOUtils.copyLarge(body, spooledBody, new 
byte[getIOBufferSize(0)]);
+        body = spooledBody.asByteSource().openStream();
+        hasCalculatedLength = true;
+      }

Review Comment:
   Is this going to copy everything into a single file on S3G machine?



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