flyrain commented on a change in pull request #3287:
URL: https://github.com/apache/iceberg/pull/3287#discussion_r731221444
##########
File path:
spark/src/main/java/org/apache/iceberg/spark/data/vectorized/ColumnarBatchReader.java
##########
@@ -47,18 +57,58 @@ public final ColumnarBatch read(ColumnarBatch reuse, int
numRowsToRead) {
closeVectors();
}
+ Map<Integer, Integer> rowIdMapping = rowIdMapping(numRowsToRead);
+
for (int i = 0; i < readers.length; i += 1) {
vectorHolders[i] = readers[i].read(vectorHolders[i], numRowsToRead);
int numRowsInVector = vectorHolders[i].numValues();
Preconditions.checkState(
numRowsInVector == numRowsToRead,
"Number of rows in the vector %s didn't match expected %s ",
numRowsInVector,
numRowsToRead);
- arrowColumnVectors[i] =
- IcebergArrowColumnVector.forHolder(vectorHolders[i],
numRowsInVector);
+
+ if (rowIdMapping == null) {
+ arrowColumnVectors[i] =
IcebergArrowColumnVector.forHolder(vectorHolders[i], numRowsInVector);
+ } else {
+ arrowColumnVectors[i] =
ColumnVectorWithFilter.forHolder(vectorHolders[i], rowIdMapping,
numRowsInVector);
+ }
}
+
+ rowStartPos += numRowsToRead;
ColumnarBatch batch = new ColumnarBatch(arrowColumnVectors);
- batch.setNumRows(numRowsToRead);
+
+ if (rowIdMapping == null) {
+ batch.setNumRows(numRowsToRead);
+ } else {
+ batch.setNumRows(rowIdMapping.size());
+ }
return batch;
}
+
+ private Map<Integer, Integer> rowIdMapping(int numRows) {
+ if (deletes != null && deletes.hasPosDeletes()) {
+ Set<Long> deletedRows = deletes.posDeletedRowIds();
+ if (deletedRows != null) {
+ Set<Integer> deletedRowIds = Sets.newHashSet();
+ deletedRows.stream().forEach(x -> deletedRowIds.add((int) (x -
rowStartPos)));
Review comment:
Will remove this part in the next commit.
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