ConeyLiu commented on code in PR #1174:
URL: https://github.com/apache/parquet-mr/pull/1174#discussion_r1361986315
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parquet-hadoop/src/main/java/org/apache/parquet/hadoop/rewrite/ParquetRewriter.java:
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@@ -265,6 +265,10 @@ private void processBlocksFromReader() throws IOException {
BlockMetaData blockMetaData = meta.getBlocks().get(blockId);
List<ColumnChunkMetaData> columnsInOrder = blockMetaData.getColumns();
+ List<ColumnIndex> columnIndexes = readAllColumnIndexes(reader,
columnsInOrder, descriptorsMap);
Review Comment:
I could add an option to it if someone is concerned about memory usage. This
only caches the metadata for only one block and should be smaller than doing
file writing which needs to cache all blocks' metadata.
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