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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/11/10 02:14:30 UTC

[GitHub] [arrow] rok commented on a diff in pull request #14191: ARROW-17798: [C++][Parquet] Add DELTA_BINARY_PACKED encoder to Parquet writer

rok commented on code in PR #14191:
URL: https://github.com/apache/arrow/pull/14191#discussion_r1018585909


##########
cpp/src/parquet/encoding.cc:
##########
@@ -2062,6 +2064,202 @@ class DictByteArrayDecoderImpl : public DictDecoderImpl<ByteArrayType>,
   }
 };
 
+// ----------------------------------------------------------------------
+// DeltaBitPackEncoder
+
+template <typename DType>
+class DeltaBitPackEncoder : public EncoderImpl, virtual public TypedEncoder<DType> {
+ public:
+  using T = typename DType::c_type;
+
+  explicit DeltaBitPackEncoder(const ColumnDescriptor* descr, MemoryPool* pool)
+      : EncoderImpl(descr, Encoding::DELTA_BINARY_PACKED, pool),
+        values_per_block_(128),

Review Comment:
   Done.



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