[HUDI-5206] RowColumnReader should not return null value for certain …

…null child columns
apache · Nov 14, 2022 · 6253ae4 · 6253ae4
1 parent 5ac605c
commit 6253ae4
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Showing 8 changed files with 58 additions and 16 deletions.
diff --git a/...ink-datasource/hudi-flink/src/test/java/org/apache/hudi/table/ITTestHoodieDataSource.java b/...ink-datasource/hudi-flink/src/test/java/org/apache/hudi/table/ITTestHoodieDataSource.java
@@ -1303,8 +1303,8 @@ void testParquetComplexTypes(String operation) {
         () -> tableEnv.sqlQuery("select * from t1").execute().collect());
     final String expected = "["
         + "+I[1, [abc1, def1], {abc1=1, def1=3}, +I[1, abc1]], "
-        + "+I[2, [abc2, def2], {def2=3, abc2=1}, +I[2, abc2]], "
-        + "+I[3, [abc3, def3], {def3=3, abc3=1}, +I[3, abc3]]]";
+        + "+I[2, [abc2, def2], {def2=3, abc2=1}, +I[2, null]], "
+        + "+I[3, [abc3, def3], {def3=3, abc3=1}, null]]";
     assertRowsEquals(result, expected);
   }
 

diff --git a/hudi-flink-datasource/hudi-flink/src/test/java/org/apache/hudi/utils/TestSQL.java b/hudi-flink-datasource/hudi-flink/src/test/java/org/apache/hudi/utils/TestSQL.java
@@ -54,8 +54,8 @@ private TestSQL() {
 
   public static final String COMPLEX_TYPE_INSERT_T1 = "insert into t1 values\n"
       + "(1, array['abc1', 'def1'], map['abc1', 1, 'def1', 3], row(1, 'abc1')),\n"
-      + "(2, array['abc2', 'def2'], map['abc2', 1, 'def2', 3], row(2, 'abc2')),\n"
-      + "(3, array['abc3', 'def3'], map['abc3', 1, 'def3', 3], row(3, 'abc3'))";
+      + "(2, array['abc2', 'def2'], map['abc2', 1, 'def2', 3], row(2, cast(null as varchar))),\n"
+      + "(3, array['abc3', 'def3'], map['abc3', 1, 'def3', 3], row(cast(null as int), cast(null as varchar)))";
 
   public static final String COMPLEX_NESTED_ROW_TYPE_INSERT_T1 = "insert into t1 values\n"
       + "(1, array['abc1', 'def1'], array[1, 1], map['abc1', 1, 'def1', 3], row(array['abc1', 'def1'], row(1, 'abc1'))),\n"

diff --git a/...link1.13.x/src/main/java/org/apache/hudi/table/format/cow/vector/HeapRowColumnVector.java b/...link1.13.x/src/main/java/org/apache/hudi/table/format/cow/vector/HeapRowColumnVector.java
@@ -44,4 +44,12 @@ public ColumnarRowData getRow(int i) {
     columnarRowData.setRowId(i);
     return columnarRowData;
   }
+
+  @Override
+  public void reset() {
+    super.reset();
+    for (WritableColumnVector vector : vectors) {
+      vector.reset();
+    }
+  }
 }
diff --git a/...k1.13.x/src/main/java/org/apache/hudi/table/format/cow/vector/reader/RowColumnReader.java b/...k1.13.x/src/main/java/org/apache/hudi/table/format/cow/vector/reader/RowColumnReader.java
@@ -41,14 +41,20 @@ public RowColumnReader(List<ColumnReader> fieldReaders) {
   public void readToVector(int readNumber, WritableColumnVector vector) throws IOException {
     HeapRowColumnVector rowColumnVector = (HeapRowColumnVector) vector;
     WritableColumnVector[] vectors = rowColumnVector.vectors;
+    // row vector null array
+    boolean[] isNulls = new boolean[readNumber];
     for (int i = 0; i < vectors.length; i++) {
       fieldReaders.get(i).readToVector(readNumber, vectors[i]);
 
       for (int j = 0; j < readNumber; j++) {
-        boolean isNull = (i == 0)
-            ? vectors[i].isNullAt(j)
-            : rowColumnVector.isNullAt(j) && vectors[i].isNullAt(j);
-        if (isNull) {
+        if (i == 0) {
+          isNulls[j] = vectors[i].isNullAt(j);
+        } else {
+          isNulls[j] = isNulls[j] && vectors[i].isNullAt(j);
+        }
+        if (i == vectors.length - 1 && isNulls[j]) {
+          // rowColumnVector[j] is null only when all fields[j] of rowColumnVector[j] is
+          // null
           rowColumnVector.setNullAt(j);
         }
       }

diff --git a/...link1.14.x/src/main/java/org/apache/hudi/table/format/cow/vector/HeapRowColumnVector.java b/...link1.14.x/src/main/java/org/apache/hudi/table/format/cow/vector/HeapRowColumnVector.java
@@ -43,4 +43,12 @@ public ColumnarRowData getRow(int i) {
     columnarRowData.setRowId(i);
     return columnarRowData;
   }
+
+  @Override
+  public void reset() {
+    super.reset();
+    for (WritableColumnVector vector : vectors) {
+      vector.reset();
+    }
+  }
 }
diff --git a/...k1.14.x/src/main/java/org/apache/hudi/table/format/cow/vector/reader/RowColumnReader.java b/...k1.14.x/src/main/java/org/apache/hudi/table/format/cow/vector/reader/RowColumnReader.java
@@ -41,14 +41,20 @@ public RowColumnReader(List<ColumnReader> fieldReaders) {
   public void readToVector(int readNumber, WritableColumnVector vector) throws IOException {
     HeapRowColumnVector rowColumnVector = (HeapRowColumnVector) vector;
     WritableColumnVector[] vectors = rowColumnVector.vectors;
+    // row vector null array
+    boolean[] isNulls = new boolean[readNumber];
     for (int i = 0; i < vectors.length; i++) {
       fieldReaders.get(i).readToVector(readNumber, vectors[i]);
 
       for (int j = 0; j < readNumber; j++) {
-        boolean isNull = (i == 0)
-            ? vectors[i].isNullAt(j)
-            : rowColumnVector.isNullAt(j) && vectors[i].isNullAt(j);
-        if (isNull) {
+        if (i == 0) {
+          isNulls[j] = vectors[i].isNullAt(j);
+        } else {
+          isNulls[j] = isNulls[j] && vectors[i].isNullAt(j);
+        }
+        if (i == vectors.length - 1 && isNulls[j]) {
+          // rowColumnVector[j] is null only when all fields[j] of rowColumnVector[j] is
+          // null
           rowColumnVector.setNullAt(j);
         }
       }

diff --git a/...link1.15.x/src/main/java/org/apache/hudi/table/format/cow/vector/HeapRowColumnVector.java b/...link1.15.x/src/main/java/org/apache/hudi/table/format/cow/vector/HeapRowColumnVector.java
@@ -43,4 +43,12 @@ public ColumnarRowData getRow(int i) {
     columnarRowData.setRowId(i);
     return columnarRowData;
   }
+
+  @Override
+  public void reset() {
+    super.reset();
+    for (WritableColumnVector vector : vectors) {
+      vector.reset();
+    }
+  }
 }
diff --git a/...k1.15.x/src/main/java/org/apache/hudi/table/format/cow/vector/reader/RowColumnReader.java b/...k1.15.x/src/main/java/org/apache/hudi/table/format/cow/vector/reader/RowColumnReader.java
@@ -41,14 +41,20 @@ public RowColumnReader(List<ColumnReader> fieldReaders) {
   public void readToVector(int readNumber, WritableColumnVector vector) throws IOException {
     HeapRowColumnVector rowColumnVector = (HeapRowColumnVector) vector;
     WritableColumnVector[] vectors = rowColumnVector.vectors;
+    // row vector null array
+    boolean[] isNulls = new boolean[readNumber];
     for (int i = 0; i < vectors.length; i++) {
       fieldReaders.get(i).readToVector(readNumber, vectors[i]);
 
       for (int j = 0; j < readNumber; j++) {
-        boolean isNull = (i == 0)
-            ? vectors[i].isNullAt(j)
-            : rowColumnVector.isNullAt(j) && vectors[i].isNullAt(j);
-        if (isNull) {
+        if (i == 0) {
+          isNulls[j] = vectors[i].isNullAt(j);
+        } else {
+          isNulls[j] = isNulls[j] && vectors[i].isNullAt(j);
+        }
+        if (i == vectors.length - 1 && isNulls[j]) {
+          // rowColumnVector[j] is null only when all fields[j] of rowColumnVector[j] is
+          // null
           rowColumnVector.setNullAt(j);
         }
       }