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[SPARK-37535][CORE] Update default spark.io.compression.codec to zstd #34798

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[SPARK-37535][CORE] Update default spark.io.compression.codec to zstd #34798

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b92bfd3
Update package.scala
wangyum Dec 3, 2021
ce477f4
Update configuration.md
wangyum Dec 3, 2021
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2 changes: 1 addition & 1 deletion core/src/main/scala/org/apache/spark/internal/config/package.scala
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Expand Up @@ -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")
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2 changes: 1 addition & 1 deletion docs/configuration.md
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Expand Up @@ -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>,
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