navina commented on code in PR #9205:
URL: https://github.com/apache/pinot/pull/9205#discussion_r947282991
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pinot-segment-local/src/main/java/org/apache/pinot/segment/local/indexsegment/mutable/MutableSegmentImpl.java:
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@@ -966,16 +966,21 @@ public Set<String> getPhysicalColumnNames() {
public DataSource getDataSource(String column) {
FieldSpec fieldSpec = _schema.getFieldSpecFor(column);
if (fieldSpec == null || fieldSpec.isVirtualColumn()) {
+ VirtualColumnContext virtualColumnContext = null;
// Column is either added during ingestion, or was initiated with a
virtual column provider
if (fieldSpec == null) {
// If the column was added during ingestion, we will construct the
column provider based on its fieldSpec to
// provide values
fieldSpec = _newlyAddedColumnsFieldMap.get(column);
Preconditions.checkNotNull(fieldSpec,
"FieldSpec for " + column + " should not be null. " + "Potentially
invalid column name specified.");
+ // newly added column shouldn't have any doc count?
+ virtualColumnContext = new VirtualColumnContext(fieldSpec, 0);
Review Comment:
ah I see. I thought the doc count here represents number of docs with
non-null values for this column.
I wasn't sure about this change. Thanks for clarifying. Let me revert to old
code and verify that the fix still works.
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