arina-ielchiieva commented on a change in pull request #1810: DRILL-7271:
Refactor Metadata interfaces and classes to contain all needed information for
the File based Metastore
URL: https://github.com/apache/drill/pull/1810#discussion_r296682028
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/physical/base/AbstractGroupScanWithMetadata.java
##########
@@ -535,31 +581,39 @@ public TableMetadata getTableMetadata() {
return partitions;
}
+ protected Map<Path, SegmentMetadata> getSegmentsMetadata() {
+ if (segments == null) {
+ segments = metadataProvider.getSegmentsMetadataMap();
+ }
+ return segments;
+ }
+
@JsonIgnore
public NonInterestingColumnsMetadata getNonInterestingColumnsMetadata() {
if (nonInterestingColumnsMetadata == null) {
- nonInterestingColumnsMetadata =
metadataProvider.getNonInterestingColumnsMeta();
+ nonInterestingColumnsMetadata =
metadataProvider.getNonInterestingColumnsMetadata();
}
return nonInterestingColumnsMetadata;
}
/**
* This class is responsible for filtering different metadata levels.
*/
- protected abstract static class GroupScanWithMetadataFilterer {
+ protected abstract static class GroupScanWithMetadataFilterer<B extends
GroupScanWithMetadataFilterer<B>> {
protected final AbstractGroupScanWithMetadata source;
protected boolean matchAllMetadata = false;
protected TableMetadata tableMetadata;
protected List<PartitionMetadata> partitions = Collections.emptyList();
+ protected Map<Path, SegmentMetadata> segments = Collections.emptyMap();
Review comment:
Using Collections emptyMap or emptyList creates unmodifiable objects, is
this expected?
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