From b92bfd33c89277e2832d0b788861286f093e379a Mon Sep 17 00:00:00 2001
From: Yuming Wang <yumwang@apache.org>
Date: Fri, 3 Dec 2021 17:55:19 +0800
Subject: [PATCH 1/2] Update package.scala

---
 .../main/scala/org/apache/spark/internal/config/package.scala   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/src/main/scala/org/apache/spark/internal/config/package.scala b/core/src/main/scala/org/apache/spark/internal/config/package.scala
index 71a11f6d45018..ed7c640d742dc 100644
--- a/core/src/main/scala/org/apache/spark/internal/config/package.scala
+++ b/core/src/main/scala/org/apache/spark/internal/config/package.scala
@@ -1739,7 +1739,7 @@ package object config {
         "the codec")
       .version("0.8.0")
       .stringConf
-      .createWithDefaultString("lz4")
+      .createWithDefaultString("zstd")
 
   private[spark] val IO_COMPRESSION_ZSTD_BUFFERSIZE =
     ConfigBuilder("spark.io.compression.zstd.bufferSize")

From ce477f454cd1efc1476e210c24f757eb515411eb Mon Sep 17 00:00:00 2001
From: Yuming Wang <yumwang@ebay.com>
Date: Fri, 3 Dec 2021 17:57:18 +0800
Subject: [PATCH 2/2] Update configuration.md

---
 docs/configuration.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/configuration.md b/docs/configuration.md
index 89871cbd3bf39..cad5a7a8b2386 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -1452,7 +1452,7 @@ Apart from these, the following properties are also available, and may be useful
 </tr>
 <tr>
   <td><code>spark.io.compression.codec</code></td>
-  <td>lz4</td>
+  <td>zstd</td>
   <td>
     The codec used to compress internal data such as RDD partitions, event log, broadcast variables
     and shuffle outputs. By default, Spark provides four codecs: <code>lz4</code>, <code>lzf</code>,