Github user arina-ielchiieva commented on a diff in the pull request:
https://github.com/apache/drill/pull/877#discussion_r132411564
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetGroupScan.java
---
@@ -633,13 +645,22 @@ public long getRowCount() {
* @throws UserException when the updated selection is empty, this
happens if the user selects an empty folder.
*/
private FileSelection
- initFromMetadataCache(FileSelection selection, Path metaFilePath) throws
IOException {
+ expandSelectionFromMetadataCache(FileSelection selection, Path
metaFilePath) throws IOException {
// get the metadata for the root directory by reading the metadata file
// parquetTableMetadata contains the metadata for all files in the
selection root folder, but we need to make sure
// we only select the files that are part of selection (by setting
fileSet appropriately)
+ MetadataContext metaContext = selection.getMetaContext();
+ // make sure that a metadata context is created since we are going to
use metadata caching
+ if (metaContext == null) {
+ metaContext = new MetadataContext();
+ selection.setMetaContext(metaContext);
+ }
// get (and set internal field) the metadata for the directory by
reading the metadata file
- this.parquetTableMetadata = Metadata.readBlockMeta(fs,
metaFilePath.toString(), selection.getMetaContext(), formatConfig);
+ parquetTableMetadata = Metadata.readBlockMeta(fs, metaFilePath,
metaContext, formatConfig);
+ if (ignoreExpandingSelection(parquetTableMetadata, selection)) {
+ return selection;
+ }
if (formatConfig.autoCorrectCorruptDates) {
--- End diff --
Please add / use getter.
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