diff -ur --exclude='*o' libarchive-3.1.2_clean/libarchive-3.1.2/libarchive/archive.h libarchive-3.1.2/libarchive/archive.h
--- libarchive-3.1.2_clean/libarchive-3.1.2/libarchive/archive.h	2013-02-09 18:23:03.000000000 +0100
+++ libarchive-3.1.2/libarchive/archive.h	2013-04-05 09:47:26.000000000 +0200
@@ -739,6 +739,14 @@
 /* Apply option string to both the format and the filter. */
 __LA_DECL int archive_write_set_options(struct archive *_a,
 			    const char *opts);
+/* EXASOL change begin */
+/* Set uncompressed size of entry
+ * Because of streaming, size is not known in advance
+ * Size must be updated after the file has been compressed
+ */
+__LA_DECL int archive_write_zip_set_uncompressed_entry_size(struct archive *_a,
+			    __LA_INT64_T);
+/* EXASOL change end */
 
 /*-
  * ARCHIVE_WRITE_DISK API
diff -ur --exclude='*o' libarchive-3.1.2_clean/libarchive-3.1.2/libarchive/archive_write_set_format_zip.c libarchive-3.1.2/libarchive/archive_write_set_format_zip.c
--- libarchive-3.1.2_clean/libarchive-3.1.2/libarchive/archive_write_set_format_zip.c	2013-01-14 02:43:45.000000000 +0100
+++ libarchive-3.1.2/libarchive/archive_write_set_format_zip.c	2013-04-05 10:03:49.000000000 +0200
@@ -361,6 +361,21 @@
 	return (ARCHIVE_OK);
 }
 
+/* EXASOL change begin */
+/* Update uncompressed entry size */
+int
+archive_write_zip_set_uncompressed_entry_size(struct archive *_a, __LA_INT64_T s)
+{
+	struct archive_write *a = (struct archive_write *)_a;
+	struct zip *zip = a->format_data;
+	struct zip_file_header_link *l = zip->central_directory_end;
+
+	archive_entry_set_size(l->entry, s);
+
+	return (ARCHIVE_OK);
+}
+/* EXASOL change end */
+
 static int
 is_all_ascii(const char *p)
 {
@@ -546,15 +561,24 @@
 		 * specification says to set to zero when using data
 		 * descriptors. Otherwise the end of the data for an
 		 * entry is rather difficult to find. */
-		archive_le32enc(&h[LOCAL_FILE_HEADER_COMPRESSED_SIZE],
-		    (uint32_t)size);
-		archive_le32enc(&h[LOCAL_FILE_HEADER_UNCOMPRESSED_SIZE],
-		    (uint32_t)size);
+
+		/* EXASOL change begin */
+		/* Do not set size in local file header
+		 * Because of streaming, size is not known */
+		/* archive_le32enc(&h[LOCAL_FILE_HEADER_COMPRESSED_SIZE],
+		 *   (uint32_t)size);
+		 * archive_le32enc(&h[LOCAL_FILE_HEADER_UNCOMPRESSED_SIZE],
+		 *   (uint32_t)size); */
+		/* EXASOL change end */
 		break;
 #ifdef HAVE_ZLIB_H
 	case COMPRESSION_DEFLATE:
-		archive_le32enc(&h[LOCAL_FILE_HEADER_UNCOMPRESSED_SIZE],
-		    (uint32_t)size);
+		/* EXASOL change begin */
+		/* Do not set size in local file header
+		 * Because of streaming, size is not known */
+		/* archive_le32enc(&h[LOCAL_FILE_HEADER_UNCOMPRESSED_SIZE],
+		 *   (uint32_t)size); */
+		/* EXASOL change end */
 
 		zip->stream.zalloc = Z_NULL;
 		zip->stream.zfree = Z_NULL;
@@ -722,6 +746,12 @@
 	archive_le32enc(&d[DATA_DESCRIPTOR_CRC32], l->crc32);
 	archive_le32enc(&d[DATA_DESCRIPTOR_COMPRESSED_SIZE],
 		(uint32_t)l->compressed_size);
+	/* EXASOL change begin */
+	/* Write (updated) uncompressed entry size into data descriptor
+	 * Because of streaming, size is not contained in local file header */
+	archive_le32enc(&d[DATA_DESCRIPTOR_UNCOMPRESSED_SIZE],
+		(uint32_t)archive_entry_size(l->entry));
+	/* EXASOL change end */
 	ret = __archive_write_output(a, d, SIZE_DATA_DESCRIPTOR);
 	if (ret != ARCHIVE_OK)
 		return (ARCHIVE_FATAL);