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[SPARK-2469] Use Snappy (instead of LZF) for default shuffle compression codec #1415

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[SPARK-2469] Use Snappy (instead of LZF) for default shuffle compression codec #1415

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4 changes: 2 additions & 2 deletions core/src/main/scala/org/apache/spark/io/CompressionCodec.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -55,7 +55,7 @@ private[spark] object CompressionCodec {
ctor.newInstance(conf).asInstanceOf[CompressionCodec]
}

val DEFAULT_COMPRESSION_CODEC = classOf[LZFCompressionCodec].getName
val DEFAULT_COMPRESSION_CODEC = classOf[SnappyCompressionCodec].getName
}


Expand All @@ -81,7 +81,7 @@ class LZFCompressionCodec(conf: SparkConf) extends CompressionCodec {
/**
* :: DeveloperApi ::
* Snappy implementation of [[org.apache.spark.io.CompressionCodec]].
* Block size can be configured by spark.io.compression.snappy.block.size.
* Block size can be configured by `spark.io.compression.snappy.block.size`.
*
* Note: The wire protocol for this codec is not guaranteed to be compatible across versions
* of Spark. This is intended for use as an internal compression utility within a single Spark
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2 changes: 1 addition & 1 deletion core/src/test/scala/org/apache/spark/io/CompressionCodecSuite.scala
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Expand Up @@ -46,7 +46,7 @@ class CompressionCodecSuite extends FunSuite {

test("default compression codec") {
val codec = CompressionCodec.createCodec(conf)
assert(codec.getClass === classOf[LZFCompressionCodec])
assert(codec.getClass === classOf[SnappyCompressionCodec])
testCodec(codec)
}

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