haibow commented on a change in pull request #4774: Refactor virtualColumn
URL: https://github.com/apache/incubator-pinot/pull/4774#discussion_r344419210
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File path:
pinot-core/src/main/java/org/apache/pinot/core/indexsegment/mutable/MutableSegmentImpl.java
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@@ -472,10 +476,8 @@ public SegmentMetadata getSegmentMetadata() {
public ColumnDataSource getDataSource(String columnName) {
FieldSpec fieldSpec = _schema.getFieldSpecFor(columnName);
if (fieldSpec.isVirtualColumn()) {
- VirtualColumnContext virtualColumnContext =
- new VirtualColumnContext(NetUtil.getHostnameOrAddress(),
getSegmentName(), columnName, _numDocsIndexed + 1);
- VirtualColumnProvider virtualColumnProvider =
-
VirtualColumnProviderFactory.buildProvider(_schema.getFieldSpecFor(columnName).getVirtualColumnProvider());
+ VirtualColumnContext virtualColumnContext = new
VirtualColumnContext(fieldSpec, _numDocsIndexed);
Review comment:
Previously virtual columns were not added to the mutable segments. I added
them in this diff.
In `MutableSegmentImplTest` there is a test validating the total number of
documents for each column (physical and virtual) in the mutable segments and
immutable segment that both read from the same avro file. It was only checking
physical columns before. After I add the virtual columns to the mutable
segment, the test failed due to one extra row in the mutable segment, likely
caused by this ` + 1`
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