loudongfeng commented on a change in pull request #925:
URL: https://github.com/apache/parquet-mr/pull/925#discussion_r704905565
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File path:
parquet-hadoop/src/main/java/org/apache/parquet/format/converter/ParquetMetadataConverter.java
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@@ -1226,14 +1239,31 @@ public ParquetMetadata readParquetMetadata(InputStream
from) throws IOException
static FileMetaData filterFileMetaDataByMidpoint(FileMetaData metaData,
RangeMetadataFilter filter) {
List<RowGroup> rowGroups = metaData.getRow_groups();
List<RowGroup> newRowGroups = new ArrayList<RowGroup>();
+ long preStartIndex = 0;
+ long preCompressedSize = 0;
+ boolean firstColumnWithMetadata = true;
+ if (rowGroups != null && rowGroups.size() > 0) {
+ firstColumnWithMetadata =
rowGroups.get(0).getColumns().get(0).isSetMeta_data();
+ }
for (RowGroup rowGroup : rowGroups) {
long totalSize = 0;
long startIndex;
+ ColumnChunk columnChunk = rowGroup.getColumns().get(0);
+ if (firstColumnWithMetadata) {
+ startIndex = getOffset(columnChunk);
+ } else {
+ assert rowGroup.isSetFile_offset();
+ assert rowGroup.isSetTotal_compressed_size();
- if (rowGroup.isSetFile_offset()) {
+ //the file_offset of first block always holds the truth, while other
blocks don't :
Review comment:
@sunchao Thanks for your information.May be the first rowgroup check is
enough for this situation(firstFileOffset==4)? I will submit a new commit.
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