[GitHub] [arrow] davisusanibar commented on a diff in pull request #34873: GH-34749 : [Java] Make Zstd compression level configurable

["davisusanibar (via GitHub)" <gi...@apache.org>]

davisusanibar commented on code in PR #34873:
URL: https://github.com/apache/arrow/pull/34873#discussion_r1157445328


##########
java/compression/src/main/java/org/apache/arrow/compression/CommonsCompressionFactory.java:
##########
@@ -27,15 +27,22 @@
  */
 public class CommonsCompressionFactory implements CompressionCodec.Factory {
 
-  public static final CommonsCompressionFactory INSTANCE = new CommonsCompressionFactory();
+  private int compressionLevel;
+
+  public CommonsCompressionFactory(int compressionLevel) {
+    this.compressionLevel = compressionLevel;
+  }
+
+  @Deprecated
+  public static final CommonsCompressionFactory INSTANCE = new CommonsCompressionFactory(3);
 
   @Override
   public CompressionCodec createCodec(CompressionUtil.CodecType codecType) {

Review Comment:
   Just updated.
   
   ```
   ArrowFileWriter writer = new ArrowFileWriter(vectorSchemaRoot, null,
     fileOutputStream.getChannel(), null, IpcOption.DEFAULT,
     CommonsCompressionFactory.INSTANCE, zstdCodec.getCodecType(), /*compressionLevel*/ 7)
   ```



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