pitrou commented on a change in pull request #168: URL: https://github.com/apache/parquet-format/pull/168#discussion_r591254094
########## File path: Compression.md ########## @@ -0,0 +1,86 @@ +<!-- + - Licensed to the Apache Software Foundation (ASF) under one + - or more contributor license agreements. See the NOTICE file + - distributed with this work for additional information + - regarding copyright ownership. The ASF licenses this file + - to you under the Apache License, Version 2.0 (the + - "License"); you may not use this file except in compliance + - with the License. You may obtain a copy of the License at + - + - http://www.apache.org/licenses/LICENSE-2.0 + - + - Unless required by applicable law or agreed to in writing, + - software distributed under the License is distributed on an + - "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + - KIND, either express or implied. See the License for the + - specific language governing permissions and limitations + - under the License. + --> + +# Parquet compression definitions + +This document contains the specification of all supported compression codecs. + +## Overview + +Parquet allows the data block inside dictionary pages and data pages to +be compressed for better space efficiency. The Parquet specification allows +several compression codecs, most of which are optional to implement. Only the Review comment: Fair enough. The core features document is indeed a good place for such considerations. ########## File path: src/main/thrift/parquet.thrift ########## @@ -481,9 +481,10 @@ enum CompressionCodec { SNAPPY = 1; GZIP = 2; LZO = 3; - BROTLI = 4; // Added in 2.4 - LZ4 = 5; // Added in 2.4 - ZSTD = 6; // Added in 2.4 + BROTLI = 4; // Added in 2.4 Review comment: Will do. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
