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new 8bb054642f4 [SPARK-44805][SQL] getBytes/getShorts/getInts/etc. should
work in a column vector that has a dictionary
8bb054642f4 is described below
commit 8bb054642f4b6b829bed7ff9bd2f94cc43b0f481
Author: Bruce Robbins <[email protected]>
AuthorDate: Fri Sep 8 12:57:42 2023 -0700
[SPARK-44805][SQL] getBytes/getShorts/getInts/etc. should work in a column
vector that has a dictionary
Change getBytes/getShorts/getInts/getLongs/getFloats/getDoubles in
`OnHeapColumnVector` and `OffHeapColumnVector` to use the dictionary, if
present.
The following query gets incorrect results:
```
drop table if exists t1;
create table t1 using parquet as
select * from values
(named_struct('f1', array(1, 2, 3), 'f2', array(1, 1, 2)))
as (value);
select cast(value as struct<f1:array<double>,f2:array<int>>) AS value from
t1;
{"f1":[1.0,2.0,3.0],"f2":[0,0,0]}
```
The result should be:
```
{"f1":[1.0,2.0,3.0],"f2":[1,2,3]}
```
The cast operation copies the second array by calling `ColumnarArray#copy`,
which in turn calls `ColumnarArray#toIntArray`, which in turn calls
`ColumnVector#getInts` on the underlying column vector (which is either an
`OnHeapColumnVector` or an `OffHeapColumnVector`). The implementation of
`getInts` in either concrete class assumes there is no dictionary and does not
use it if it is present (in fact, it even asserts that there is no dictionary).
However, in the above example, the col [...]
```
java -cp ~/github/parquet-mr/parquet-tools/target/parquet-tools-1.10.1.jar
org.apache.parquet.tools.Main meta
./spark-warehouse/t1/part-00000-122fdd53-8166-407b-aec5-08e0c2845c3d-c000.snappy.parquet
...
row group 1: RC:1 TS:112 OFFSET:4
-------------------------------------------------------------------------------------------------------------------------------------------------------
value:
.f1:
..list:
...element: INT32 SNAPPY DO:0 FPO:4 SZ:47/47/1.00 VC:3 ENC:RLE,PLAIN
ST:[min: 1, max: 3, num_nulls: 0]
.f2:
..list:
...element: INT32 SNAPPY DO:51 FPO:80 SZ:69/65/0.94 VC:3
ENC:RLE,PLAIN_DICTIONARY ST:[min: 1, max: 2, num_nulls: 0]
```
The same bug also occurs when field f2 is a map. This PR fixes that case as
well.
No, except for fixing the correctness issue.
New tests.
No.
Closes #42850 from bersprockets/vector_oddity.
Authored-by: Bruce Robbins <[email protected]>
Signed-off-by: Dongjoon Hyun <[email protected]>
(cherry picked from commit fac236e1350d1c71dd772251709db3af877a69c2)
Signed-off-by: Dongjoon Hyun <[email protected]>
---
.../sql/execution/columnar/ColumnDictionary.java | 18 +++--
.../execution/vectorized/OffHeapColumnVector.java | 55 +++++++++++----
.../execution/vectorized/OnHeapColumnVector.java | 54 +++++++++++----
.../datasources/parquet/ParquetQuerySuite.scala | 10 +++
.../execution/vectorized/ColumnVectorSuite.scala | 80 +++++++++++++++++++++-
5 files changed, 186 insertions(+), 31 deletions(-)
diff --git
a/sql/core/src/main/java/org/apache/spark/sql/execution/columnar/ColumnDictionary.java
b/sql/core/src/main/java/org/apache/spark/sql/execution/columnar/ColumnDictionary.java
index 419dda874d3..29271fc5c0a 100644
---
a/sql/core/src/main/java/org/apache/spark/sql/execution/columnar/ColumnDictionary.java
+++
b/sql/core/src/main/java/org/apache/spark/sql/execution/columnar/ColumnDictionary.java
@@ -22,6 +22,8 @@ import org.apache.spark.sql.execution.vectorized.Dictionary;
public final class ColumnDictionary implements Dictionary {
private int[] intDictionary;
private long[] longDictionary;
+ private float[] floatDictionary;
+ private double[] doubleDictionary;
public ColumnDictionary(int[] dictionary) {
this.intDictionary = dictionary;
@@ -31,6 +33,14 @@ public final class ColumnDictionary implements Dictionary {
this.longDictionary = dictionary;
}
+ public ColumnDictionary(float[] dictionary) {
+ this.floatDictionary = dictionary;
+ }
+
+ public ColumnDictionary(double[] dictionary) {
+ this.doubleDictionary = dictionary;
+ }
+
@Override
public int decodeToInt(int id) {
return intDictionary[id];
@@ -42,14 +52,10 @@ public final class ColumnDictionary implements Dictionary {
}
@Override
- public float decodeToFloat(int id) {
- throw new UnsupportedOperationException("Dictionary encoding does not
support float");
- }
+ public float decodeToFloat(int id) { return floatDictionary[id]; }
@Override
- public double decodeToDouble(int id) {
- throw new UnsupportedOperationException("Dictionary encoding does not
support double");
- }
+ public double decodeToDouble(int id) { return doubleDictionary[id]; }
@Override
public byte[] decodeToBinary(int id) {
diff --git
a/sql/core/src/main/java/org/apache/spark/sql/execution/vectorized/OffHeapColumnVector.java
b/sql/core/src/main/java/org/apache/spark/sql/execution/vectorized/OffHeapColumnVector.java
index 711c00856e9..6663c4ba995 100644
---
a/sql/core/src/main/java/org/apache/spark/sql/execution/vectorized/OffHeapColumnVector.java
+++
b/sql/core/src/main/java/org/apache/spark/sql/execution/vectorized/OffHeapColumnVector.java
@@ -210,9 +210,14 @@ public final class OffHeapColumnVector extends
WritableColumnVector {
@Override
public byte[] getBytes(int rowId, int count) {
- assert(dictionary == null);
byte[] array = new byte[count];
- Platform.copyMemory(null, data + rowId, array, Platform.BYTE_ARRAY_OFFSET,
count);
+ if (dictionary == null) {
+ Platform.copyMemory(null, data + rowId, array,
Platform.BYTE_ARRAY_OFFSET, count);
+ } else {
+ for (int i = 0; i < count; i++) {
+ array[i] = getByte(rowId + i);
+ }
+ }
return array;
}
@@ -266,9 +271,14 @@ public final class OffHeapColumnVector extends
WritableColumnVector {
@Override
public short[] getShorts(int rowId, int count) {
- assert(dictionary == null);
short[] array = new short[count];
- Platform.copyMemory(null, data + rowId * 2L, array,
Platform.SHORT_ARRAY_OFFSET, count * 2L);
+ if (dictionary == null) {
+ Platform.copyMemory(null, data + rowId * 2L, array,
Platform.SHORT_ARRAY_OFFSET, count * 2L);
+ } else {
+ for (int i = 0; i < count; i++) {
+ array[i] = getShort(rowId + i);
+ }
+ }
return array;
}
@@ -327,9 +337,14 @@ public final class OffHeapColumnVector extends
WritableColumnVector {
@Override
public int[] getInts(int rowId, int count) {
- assert(dictionary == null);
int[] array = new int[count];
- Platform.copyMemory(null, data + rowId * 4L, array,
Platform.INT_ARRAY_OFFSET, count * 4L);
+ if (dictionary == null) {
+ Platform.copyMemory(null, data + rowId * 4L, array,
Platform.INT_ARRAY_OFFSET, count * 4L);
+ } else {
+ for (int i = 0; i < count; i++) {
+ array[i] = getInt(rowId + i);
+ }
+ }
return array;
}
@@ -399,9 +414,14 @@ public final class OffHeapColumnVector extends
WritableColumnVector {
@Override
public long[] getLongs(int rowId, int count) {
- assert(dictionary == null);
long[] array = new long[count];
- Platform.copyMemory(null, data + rowId * 8L, array,
Platform.LONG_ARRAY_OFFSET, count * 8L);
+ if (dictionary == null) {
+ Platform.copyMemory(null, data + rowId * 8L, array,
Platform.LONG_ARRAY_OFFSET, count * 8L);
+ } else {
+ for (int i = 0; i < count; i++) {
+ array[i] = getLong(rowId + i);
+ }
+ }
return array;
}
@@ -458,9 +478,14 @@ public final class OffHeapColumnVector extends
WritableColumnVector {
@Override
public float[] getFloats(int rowId, int count) {
- assert(dictionary == null);
float[] array = new float[count];
- Platform.copyMemory(null, data + rowId * 4L, array,
Platform.FLOAT_ARRAY_OFFSET, count * 4L);
+ if (dictionary == null) {
+ Platform.copyMemory(null, data + rowId * 4L, array,
Platform.FLOAT_ARRAY_OFFSET, count * 4L);
+ } else {
+ for (int i = 0; i < count; i++) {
+ array[i] = getFloat(rowId + i);
+ }
+ }
return array;
}
@@ -518,9 +543,15 @@ public final class OffHeapColumnVector extends
WritableColumnVector {
@Override
public double[] getDoubles(int rowId, int count) {
- assert(dictionary == null);
double[] array = new double[count];
- Platform.copyMemory(null, data + rowId * 8L, array,
Platform.DOUBLE_ARRAY_OFFSET, count * 8L);
+ if (dictionary == null) {
+ Platform.copyMemory(null, data + rowId * 8L, array,
Platform.DOUBLE_ARRAY_OFFSET,
+ count * 8L);
+ } else {
+ for (int i = 0; i < count; i++) {
+ array[i] = getDouble(rowId + i);
+ }
+ }
return array;
}
diff --git
a/sql/core/src/main/java/org/apache/spark/sql/execution/vectorized/OnHeapColumnVector.java
b/sql/core/src/main/java/org/apache/spark/sql/execution/vectorized/OnHeapColumnVector.java
index 505377bdb68..85f25b1bbbf 100644
---
a/sql/core/src/main/java/org/apache/spark/sql/execution/vectorized/OnHeapColumnVector.java
+++
b/sql/core/src/main/java/org/apache/spark/sql/execution/vectorized/OnHeapColumnVector.java
@@ -208,9 +208,14 @@ public final class OnHeapColumnVector extends
WritableColumnVector {
@Override
public byte[] getBytes(int rowId, int count) {
- assert(dictionary == null);
byte[] array = new byte[count];
- System.arraycopy(byteData, rowId, array, 0, count);
+ if (dictionary == null) {
+ System.arraycopy(byteData, rowId, array, 0, count);
+ } else {
+ for (int i = 0; i < count; i++) {
+ array[i] = getByte(rowId + i);
+ }
+ }
return array;
}
@@ -263,9 +268,14 @@ public final class OnHeapColumnVector extends
WritableColumnVector {
@Override
public short[] getShorts(int rowId, int count) {
- assert(dictionary == null);
short[] array = new short[count];
- System.arraycopy(shortData, rowId, array, 0, count);
+ if (dictionary == null) {
+ System.arraycopy(shortData, rowId, array, 0, count);
+ } else {
+ for (int i = 0; i < count; i++) {
+ array[i] = getShort(rowId + i);
+ }
+ }
return array;
}
@@ -319,9 +329,14 @@ public final class OnHeapColumnVector extends
WritableColumnVector {
@Override
public int[] getInts(int rowId, int count) {
- assert(dictionary == null);
int[] array = new int[count];
- System.arraycopy(intData, rowId, array, 0, count);
+ if (dictionary == null) {
+ System.arraycopy(intData, rowId, array, 0, count);
+ } else {
+ for (int i = 0; i < count; i++) {
+ array[i] = getInt(rowId + i);
+ }
+ }
return array;
}
@@ -385,9 +400,14 @@ public final class OnHeapColumnVector extends
WritableColumnVector {
@Override
public long[] getLongs(int rowId, int count) {
- assert(dictionary == null);
long[] array = new long[count];
- System.arraycopy(longData, rowId, array, 0, count);
+ if (dictionary == null) {
+ System.arraycopy(longData, rowId, array, 0, count);
+ } else {
+ for (int i = 0; i < count; i++) {
+ array[i] = getLong(rowId + i);
+ }
+ }
return array;
}
@@ -437,9 +457,14 @@ public final class OnHeapColumnVector extends
WritableColumnVector {
@Override
public float[] getFloats(int rowId, int count) {
- assert(dictionary == null);
float[] array = new float[count];
- System.arraycopy(floatData, rowId, array, 0, count);
+ if (dictionary == null) {
+ System.arraycopy(floatData, rowId, array, 0, count);
+ } else {
+ for (int i = 0; i < count; i++) {
+ array[i] = getFloat(rowId + i);
+ }
+ }
return array;
}
@@ -491,9 +516,14 @@ public final class OnHeapColumnVector extends
WritableColumnVector {
@Override
public double[] getDoubles(int rowId, int count) {
- assert(dictionary == null);
double[] array = new double[count];
- System.arraycopy(doubleData, rowId, array, 0, count);
+ if (dictionary == null) {
+ System.arraycopy(doubleData, rowId, array, 0, count);
+ } else {
+ for (int i = 0; i < count; i++) {
+ array[i] = getDouble(rowId + i);
+ }
+ }
return array;
}
diff --git
a/sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetQuerySuite.scala
b/sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetQuerySuite.scala
index 4e236ad7865..51de8fa04c6 100644
---
a/sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetQuerySuite.scala
+++
b/sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetQuerySuite.scala
@@ -1014,6 +1014,16 @@ abstract class ParquetQuerySuite extends QueryTest with
ParquetTest with SharedS
checkAnswer(sql("select * from tbl"), expected)
}
}
+
+ test("SPARK-44805: cast of struct with two arrays") {
+ withTable("tbl") {
+ sql("create table tbl (value struct<f1:array<int>,f2:array<int>>) using
parquet")
+ sql("insert into tbl values (named_struct('f1', array(1, 2, 3), 'f2',
array(1, 1, 2)))")
+ val df = sql("select cast(value as
struct<f1:array<double>,f2:array<int>>) AS value from tbl")
+ val expected = Row(Row(Array(1.0d, 2.0d, 3.0d), Array(1, 1, 2))) :: Nil
+ checkAnswer(df, expected)
+ }
+ }
}
class ParquetV1QuerySuite extends ParquetQuerySuite {
diff --git
a/sql/core/src/test/scala/org/apache/spark/sql/execution/vectorized/ColumnVectorSuite.scala
b/sql/core/src/test/scala/org/apache/spark/sql/execution/vectorized/ColumnVectorSuite.scala
index 4cf2376a3fc..c9fab1e9d15 100644
---
a/sql/core/src/test/scala/org/apache/spark/sql/execution/vectorized/ColumnVectorSuite.scala
+++
b/sql/core/src/test/scala/org/apache/spark/sql/execution/vectorized/ColumnVectorSuite.scala
@@ -21,7 +21,7 @@ import org.scalatest.BeforeAndAfterEach
import org.apache.spark.SparkFunSuite
import org.apache.spark.sql.catalyst.expressions.SpecificInternalRow
-import org.apache.spark.sql.execution.columnar.ColumnAccessor
+import org.apache.spark.sql.execution.columnar.{ColumnAccessor,
ColumnDictionary}
import org.apache.spark.sql.execution.columnar.compression.ColumnBuilderHelper
import org.apache.spark.sql.types._
import org.apache.spark.sql.vectorized.ColumnarArray
@@ -383,6 +383,84 @@ class ColumnVectorSuite extends SparkFunSuite with
BeforeAndAfterEach {
assert(testVector.getStruct(1).get(1, DoubleType) === 5.67)
}
+ testVectors("SPARK-44805: getInts with dictionary", 3, IntegerType) {
testVector =>
+ val dict = new ColumnDictionary(Array[Int](7, 8, 9))
+ testVector.setDictionary(dict)
+ testVector.reserveDictionaryIds(3)
+ testVector.getDictionaryIds.putInt(0, 0)
+ testVector.getDictionaryIds.putInt(1, 1)
+ testVector.getDictionaryIds.putInt(2, 2)
+
+ assert(testVector.getInts(0, 3)(0) == 7)
+ assert(testVector.getInts(0, 3)(1) == 8)
+ assert(testVector.getInts(0, 3)(2) == 9)
+ }
+
+ testVectors("SPARK-44805: getShorts with dictionary", 3, ShortType) {
testVector =>
+ val dict = new ColumnDictionary(Array[Int](7, 8, 9))
+ testVector.setDictionary(dict)
+ testVector.reserveDictionaryIds(3)
+ testVector.getDictionaryIds.putInt(0, 0)
+ testVector.getDictionaryIds.putInt(1, 1)
+ testVector.getDictionaryIds.putInt(2, 2)
+
+ assert(testVector.getShorts(0, 3)(0) == 7)
+ assert(testVector.getShorts(0, 3)(1) == 8)
+ assert(testVector.getShorts(0, 3)(2) == 9)
+ }
+
+ testVectors("SPARK-44805: getBytes with dictionary", 3, ByteType) {
testVector =>
+ val dict = new ColumnDictionary(Array[Int](7, 8, 9))
+ testVector.setDictionary(dict)
+ testVector.reserveDictionaryIds(3)
+ testVector.getDictionaryIds.putInt(0, 0)
+ testVector.getDictionaryIds.putInt(1, 1)
+ testVector.getDictionaryIds.putInt(2, 2)
+
+ assert(testVector.getBytes(0, 3)(0) == 7)
+ assert(testVector.getBytes(0, 3)(1) == 8)
+ assert(testVector.getBytes(0, 3)(2) == 9)
+ }
+
+ testVectors("SPARK-44805: getLongs with dictionary", 3, LongType) {
testVector =>
+ val dict = new ColumnDictionary(Array[Long](2147483648L, 2147483649L,
2147483650L))
+ testVector.setDictionary(dict)
+ testVector.reserveDictionaryIds(3)
+ testVector.getDictionaryIds.putInt(0, 0)
+ testVector.getDictionaryIds.putInt(1, 1)
+ testVector.getDictionaryIds.putInt(2, 2)
+
+ assert(testVector.getLongs(0, 3)(0) == 2147483648L)
+ assert(testVector.getLongs(0, 3)(1) == 2147483649L)
+ assert(testVector.getLongs(0, 3)(2) == 2147483650L)
+ }
+
+ testVectors("SPARK-44805: getFloats with dictionary", 3, FloatType) {
testVector =>
+ val dict = new ColumnDictionary(Array[Float](0.1f, 0.2f, 0.3f))
+ testVector.setDictionary(dict)
+ testVector.reserveDictionaryIds(3)
+ testVector.getDictionaryIds.putInt(0, 0)
+ testVector.getDictionaryIds.putInt(1, 1)
+ testVector.getDictionaryIds.putInt(2, 2)
+
+ assert(testVector.getFloats(0, 3)(0) == 0.1f)
+ assert(testVector.getFloats(0, 3)(1) == 0.2f)
+ assert(testVector.getFloats(0, 3)(2) == 0.3f)
+ }
+
+ testVectors("SPARK-44805: getDoubles with dictionary", 3, DoubleType) {
testVector =>
+ val dict = new ColumnDictionary(Array[Double](1342.17727d, 1342.17728d,
1342.17729d))
+ testVector.setDictionary(dict)
+ testVector.reserveDictionaryIds(3)
+ testVector.getDictionaryIds.putInt(0, 0)
+ testVector.getDictionaryIds.putInt(1, 1)
+ testVector.getDictionaryIds.putInt(2, 2)
+
+ assert(testVector.getDoubles(0, 3)(0) == 1342.17727d)
+ assert(testVector.getDoubles(0, 3)(1) == 1342.17728d)
+ assert(testVector.getDoubles(0, 3)(2) == 1342.17729d)
+ }
+
test("[SPARK-22092] off-heap column vector reallocation corrupts array
data") {
withVector(new OffHeapColumnVector(8, arrayType)) { testVector =>
val data = testVector.arrayData()
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