Ted-Jiang commented on code in PR #2116:
URL: https://github.com/apache/arrow-rs/pull/2116#discussion_r926222221
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parquet/src/arrow/record_reader/mod.rs:
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@@ -120,9 +96,25 @@ where
/// Set the current page reader.
pub fn set_page_reader(&mut self, page_reader: Box<dyn PageReader>) ->
Result<()> {
- self.column_reader = Some(GenericColumnReader::new(
+ let descr = &self.column_desc;
+ let values_decoder = CV::new(descr);
+
+ let def_level_decoder = (descr.max_def_level() != 0).then(|| {
+ DefinitionLevelBufferDecoder::new(
+ descr.max_def_level(),
+ packed_null_mask(descr),
Review Comment:
oops, i am wrong. i found need set `LevelDecoderInner` for each page, means
: each page def_level and rep_level may in dif encoding ? right😂
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