bowenliang123 commented on code in PR #3877:
URL: https://github.com/apache/incubator-kyuubi/pull/3877#discussion_r1038324532
##########
externals/kyuubi-spark-sql-engine/src/main/scala/org/apache/spark/sql/kyuubi/SparkDatasetHelper.scala:
##########
@@ -73,3 +79,53 @@ object SparkDatasetHelper {
}
}
}
+
+trait CompressionCodec extends Serializable {
+ def outputStream(baos: ByteArrayOutputStream): OutputStream
+ def compress(byteArray: Array[Byte]): Array[Byte] = {
+ val baos = new ByteArrayOutputStream()
+ var os: OutputStream = null
+ try {
+ os = outputStream(baos)
+ os.write(byteArray)
+ } finally {
+ if (os != null) {
+ os.close()
+ }
+ }
+ baos.toByteArray
+ }
+}
+
+object CompressionCodecFactory {
+ def createCodec(tpe: String): CompressionCodec = {
+ tpe match {
+ case "lz4" => Lz4CompressionCodec
+ case "zstd" => ZstdCompressionCodec
+ case "gzip" => GZIPCompressionCodec
+ case _ => NoCompressionCodec
+ }
+ }
+}
+
+object NoCompressionCodec extends CompressionCodec {
+ override def outputStream(baos: ByteArrayOutputStream): OutputStream = {
+ throw new UnsupportedOperationException()
+ }
+ override def compress(byteArray: Array[Byte]): Array[Byte] = byteArray
+}
+
+object Lz4CompressionCodec extends CompressionCodec {
+ override def outputStream(baos: ByteArrayOutputStream): OutputStream =
+ new LZ4FrameOutputStream(baos)
+}
+
+object ZstdCompressionCodec extends CompressionCodec {
+ override def outputStream(baos: ByteArrayOutputStream): OutputStream =
+ new ZstdOutputStreamNoFinalizer(baos)
+}
+
+object GZIPCompressionCodec extends CompressionCodec {
Review Comment:
```suggestion
object GzipCompressionCodec extends CompressionCodec {
```
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