diff --git a/aws/src/main/java/org/apache/iceberg/aws/AwsClientUtil.java b/aws/src/main/java/org/apache/iceberg/aws/AwsClientUtil.java
new file mode 100644
index 000000000000..aa2d1f31bfea
--- /dev/null
+++ b/aws/src/main/java/org/apache/iceberg/aws/AwsClientUtil.java
@@ -0,0 +1,43 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.iceberg.aws;
+
+import software.amazon.awssdk.http.urlconnection.UrlConnectionHttpClient;
+import software.amazon.awssdk.services.s3.S3Client;
+
+/**
+ * Provide factory methods to get default AWS clients.
+ * The clients use a default {@link UrlConnectionHttpClient} to avoid multiple versions of AWS HTTP client builders
+ * existing in the Java classpath, causing non-deterministic behavior of the AWS client.
+ * The credential and region information are both loaded from the default chain.
+ * For more details, see https://docs.aws.amazon.com/sdk-for-java/v2/developer-guide/credentials.html and
+ * https://docs.aws.amazon.com/sdk-for-java/v2/developer-guide/java-dg-region-selection.html
+ */
+public class AwsClientUtil {
+
+  private AwsClientUtil() {
+  }
+
+  public static S3Client defaultS3Client() {
+    return S3Client.builder()
+        .httpClient(UrlConnectionHttpClient.create())
+        .build();
+  }
+}
diff --git a/aws/src/main/java/org/apache/iceberg/aws/s3/S3FileIO.java b/aws/src/main/java/org/apache/iceberg/aws/s3/S3FileIO.java
index e889bc52ed05..1f69ec534006 100644
--- a/aws/src/main/java/org/apache/iceberg/aws/s3/S3FileIO.java
+++ b/aws/src/main/java/org/apache/iceberg/aws/s3/S3FileIO.java
@@ -19,6 +19,7 @@
 
 package org.apache.iceberg.aws.s3;
 
+import org.apache.iceberg.aws.AwsClientUtil;
 import org.apache.iceberg.io.FileIO;
 import org.apache.iceberg.io.InputFile;
 import org.apache.iceberg.io.OutputFile;
@@ -29,14 +30,16 @@
 import software.amazon.awssdk.services.s3.model.ObjectIdentifier;
 
 /**
- * FileIO implementation backed by S3.  Locations used must follow the conventions for URIs (e.g. s3://bucket/path/..).
+ * FileIO implementation backed by S3.
+ * Locations used must follow the conventions for S3 URIs (e.g. s3://bucket/path...).
+ * See {@link S3URI#VALID_SCHEMES} for the list of supported S3 URI schemes.
  */
 public class S3FileIO implements FileIO {
   private final SerializableSupplier<S3Client> s3;
   private transient S3Client client;
 
   public S3FileIO() {
-    this.s3 = S3Client::create;
+    this.s3 = AwsClientUtil::defaultS3Client;
   }
 
   public S3FileIO(SerializableSupplier<S3Client> s3) {
diff --git a/aws/src/main/java/org/apache/iceberg/aws/s3/S3OutputStream.java b/aws/src/main/java/org/apache/iceberg/aws/s3/S3OutputStream.java
index c9ed27490c4e..2ae94a2f698b 100644
--- a/aws/src/main/java/org/apache/iceberg/aws/s3/S3OutputStream.java
+++ b/aws/src/main/java/org/apache/iceberg/aws/s3/S3OutputStream.java
@@ -81,6 +81,10 @@ public void write(byte[] b, int off, int len) throws IOException {
 
   @Override
   public void close() throws IOException {
+    if (closed) {
+      return;
+    }
+
     super.close();
     closed = true;
 
diff --git a/aws/src/test/java/org/apache/iceberg/aws/s3/S3OutputStreamTest.java b/aws/src/test/java/org/apache/iceberg/aws/s3/S3OutputStreamTest.java
index 6e1dfd2b1e6d..3e1b355daabd 100644
--- a/aws/src/test/java/org/apache/iceberg/aws/s3/S3OutputStreamTest.java
+++ b/aws/src/test/java/org/apache/iceberg/aws/s3/S3OutputStreamTest.java
@@ -93,6 +93,14 @@ public void testWriteArray() throws IOException {
     assertArrayEquals(expected, actual);
   }
 
+  @Test
+  public void testMultipleClose() throws IOException {
+    S3URI uri = new S3URI("s3://bucket/path/to/array-out.dat");
+    S3OutputStream stream = new S3OutputStream(s3, uri);
+    stream.close();
+    stream.close();
+  }
+
   private byte[] readS3Data(S3URI uri) {
     ResponseBytes<GetObjectResponse> data =
         s3.getObject(GetObjectRequest.builder().bucket(uri.bucket()).key(uri.key()).build(),
diff --git a/aws/src/test/java/org/apache/iceberg/aws/s3/S3URITest.java b/aws/src/test/java/org/apache/iceberg/aws/s3/S3URITest.java
index 80ffa7f81336..a11b8286a9f2 100644
--- a/aws/src/test/java/org/apache/iceberg/aws/s3/S3URITest.java
+++ b/aws/src/test/java/org/apache/iceberg/aws/s3/S3URITest.java
@@ -20,6 +20,7 @@
 package org.apache.iceberg.aws.s3;
 
 import org.apache.iceberg.exceptions.ValidationException;
+import org.apache.iceberg.relocated.com.google.common.collect.Lists;
 import org.junit.Test;
 
 import static org.junit.Assert.assertEquals;
@@ -71,4 +72,13 @@ public void testQueryAndFragment() {
     assertEquals("path/to/file", uri1.key());
     assertEquals(p1, uri1.toString());
   }
+
+  @Test
+  public void testValidSchemes() {
+    for (String scheme : Lists.newArrayList("https", "s3", "s3a", "s3n")) {
+      S3URI uri = new S3URI(scheme + "://bucket/path/to/file");
+      assertEquals("bucket", uri.bucket());
+      assertEquals("path/to/file", uri.key());
+    }
+  }
 }
diff --git a/build.gradle b/build.gradle
index 39ab43d9488f..0a8bc406ec12 100644
--- a/build.gradle
+++ b/build.gradle
@@ -249,6 +249,7 @@ project(':iceberg-aws') {
     compile project(':iceberg-api')
     compile project(':iceberg-core')
 
+    compile 'software.amazon.awssdk:url-connection-client'
     compile 'software.amazon.awssdk:s3'
 
     testCompile("com.adobe.testing:s3mock-junit4") {
diff --git a/versions.props b/versions.props
index 88ee22db5150..6e748b705234 100644
--- a/versions.props
+++ b/versions.props
@@ -17,7 +17,7 @@ com.github.ben-manes.caffeine:caffeine = 2.7.0
 org.apache.arrow:arrow-vector = 2.0.0
 org.apache.arrow:arrow-memory-netty = 2.0.0
 com.github.stephenc.findbugs:findbugs-annotations = 1.3.9-1
-software.amazon.awssdk:s3 = 2.15.7
+software.amazon.awssdk:* = 2.15.7
 org.scala-lang:scala-library = 2.12.10
 
 # test deps