snicholasbarton commented on code in PR #18398:
URL: https://github.com/apache/iceberg/pull/18398#discussion_r4208707504
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parquet/src/main/java/org/apache/iceberg/parquet/ParquetCodecFactory.java:
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@@ -21,18 +21,26 @@
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.io.compress.CompressionCodec;
import org.apache.hadoop.util.ReflectionUtils;
+import org.apache.parquet.conf.HadoopParquetConfiguration;
+import org.apache.parquet.conf.ParquetConfiguration;
import org.apache.parquet.hadoop.BadConfigurationException;
import org.apache.parquet.hadoop.CodecFactory;
import org.apache.parquet.hadoop.metadata.CompressionCodecName;
+import org.apache.parquet.hadoop.util.ConfigurationUtil;
/**
- * This class implements a codec factory that is used when reading from
Parquet. It adds a
- * workaround to cache codecs by name and level, not just by name. This can be
removed when this
- * change is made to Parquet.
+ * This class implements a codec factory that is used when writing Parquet. It
adds a workaround to
+ * cache codecs by name and level, not just by name, and also honors the legacy
+ * "io.compression.codec.zstd.level" property. This can be removed when this
change is made to
+ * Parquet.
*/
public class ParquetCodecFactory extends CodecFactory {
public ParquetCodecFactory(Configuration configuration, int pageSize) {
Review Comment:
Yep; was mostly just being conservative given this is library code, but I
did another look over and seems it's for internal-use only so have marked as
deprecated + made the new constructor package-private
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