Jackie-Jiang commented on code in PR #12502:
URL: https://github.com/apache/pinot/pull/12502#discussion_r1503471374
##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/segment/index/loader/columnminmaxvalue/ColumnMinMaxValueGenerator.java:
##########
@@ -124,227 +131,251 @@ private List<String> getColumnsToAddMinMaxValue() {
}
private boolean needAddColumnMinMaxValueForColumn(String columnName) {
- ColumnMetadata columnMetadata =
_segmentMetadata.getColumnMetadataFor(columnName);
+ return
needAddColumnMinMaxValueForColumn(_segmentMetadata.getColumnMetadataFor(columnName));
+ }
+
+ private boolean needAddColumnMinMaxValueForColumn(ColumnMetadata
columnMetadata) {
return columnMetadata.getMinValue() == null &&
columnMetadata.getMaxValue() == null
&& !columnMetadata.isMinMaxValueInvalid();
}
- private void addColumnMinMaxValueForColumn(String columnName)
- throws Exception {
- // Skip column with min/max value already set
+ private void addColumnMinMaxValueForColumn(String columnName) {
ColumnMetadata columnMetadata =
_segmentMetadata.getColumnMetadataFor(columnName);
- if (columnMetadata.getMinValue() != null || columnMetadata.getMaxValue()
!= null) {
+ if (!needAddColumnMinMaxValueForColumn(columnMetadata)) {
return;
}
+ try {
+ if (columnMetadata.hasDictionary()) {
+ addColumnMinMaxValueWithDictionary(columnMetadata);
+ } else {
+ addColumnMinMaxValueWithoutDictionary(columnMetadata);
+ }
+ _minMaxValueAdded = true;
+ } catch (Exception e) {
+ LOGGER.error("Caught exception while generating min/max value for
column: {} in segment: {}, continuing without "
+ + "persisting them", columnName, _segmentMetadata.getName(), e);
+ }
+ }
+ private void addColumnMinMaxValueWithDictionary(ColumnMetadata
columnMetadata)
+ throws IOException {
+ try (Dictionary dictionary = getDictionaryForColumn(columnMetadata)) {
+ SegmentColumnarIndexCreator.addColumnMinMaxValueInfo(_segmentProperties,
columnMetadata.getColumnName(),
+ dictionary.getInternal(0),
dictionary.getInternal(dictionary.length() - 1),
+ columnMetadata.getDataType().getStoredType());
+ }
+ }
+
+ private Dictionary getDictionaryForColumn(ColumnMetadata columnMetadata)
+ throws IOException {
+ String columnName = columnMetadata.getColumnName();
+ DataType dataType = columnMetadata.getDataType();
+ PinotDataBuffer dictionaryBuffer = _segmentWriter.getIndexFor(columnName,
StandardIndexes.dictionary());
+ int length = columnMetadata.getCardinality();
+ switch (dataType.getStoredType()) {
+ case INT:
+ return new IntDictionary(dictionaryBuffer, length);
+ case LONG:
+ return new LongDictionary(dictionaryBuffer, length);
+ case FLOAT:
+ return new FloatDictionary(dictionaryBuffer, length);
+ case DOUBLE:
+ return new DoubleDictionary(dictionaryBuffer, length);
+ case BIG_DECIMAL:
+ return new BigDecimalDictionary(dictionaryBuffer, length,
columnMetadata.getColumnMaxLength());
+ case STRING:
+ return new StringDictionary(dictionaryBuffer, length,
columnMetadata.getColumnMaxLength());
+ case BYTES:
+ return new BytesDictionary(dictionaryBuffer, length,
columnMetadata.getColumnMaxLength());
+ default:
+ throw new IllegalStateException("Unsupported data type: " + dataType +
" for column: " + columnName);
+ }
+ }
+
+ @SuppressWarnings({"rawtypes", "unchecked"})
+ private void addColumnMinMaxValueWithoutDictionary(ColumnMetadata
columnMetadata)
+ throws IOException {
+ String columnName = columnMetadata.getColumnName();
DataType dataType = columnMetadata.getDataType();
DataType storedType = dataType.getStoredType();
- if (columnMetadata.hasDictionary()) {
- PinotDataBuffer dictionaryBuffer =
_segmentWriter.getIndexFor(columnName, StandardIndexes.dictionary());
- int length = columnMetadata.getCardinality();
- switch (storedType) {
- case INT:
- try (IntDictionary intDictionary = new
IntDictionary(dictionaryBuffer, length)) {
-
SegmentColumnarIndexCreator.addColumnMinMaxValueInfo(_segmentProperties,
columnName,
- intDictionary.getStringValue(0),
intDictionary.getStringValue(length - 1), storedType);
- }
- break;
- case LONG:
- try (LongDictionary longDictionary = new
LongDictionary(dictionaryBuffer, length)) {
-
SegmentColumnarIndexCreator.addColumnMinMaxValueInfo(_segmentProperties,
columnName,
- longDictionary.getStringValue(0),
longDictionary.getStringValue(length - 1), storedType);
- }
- break;
- case FLOAT:
- try (FloatDictionary floatDictionary = new
FloatDictionary(dictionaryBuffer, length)) {
-
SegmentColumnarIndexCreator.addColumnMinMaxValueInfo(_segmentProperties,
columnName,
- floatDictionary.getStringValue(0),
floatDictionary.getStringValue(length - 1), storedType);
- }
- break;
- case DOUBLE:
- try (DoubleDictionary doubleDictionary = new
DoubleDictionary(dictionaryBuffer, length)) {
-
SegmentColumnarIndexCreator.addColumnMinMaxValueInfo(_segmentProperties,
columnName,
- doubleDictionary.getStringValue(0),
doubleDictionary.getStringValue(length - 1), storedType);
- }
- break;
- case STRING:
- try (StringDictionary stringDictionary = new
StringDictionary(dictionaryBuffer, length,
- columnMetadata.getColumnMaxLength())) {
-
SegmentColumnarIndexCreator.addColumnMinMaxValueInfo(_segmentProperties,
columnName,
- stringDictionary.getStringValue(0),
stringDictionary.getStringValue(length - 1), storedType);
- }
- break;
- case BYTES:
- try (BytesDictionary bytesDictionary = new
BytesDictionary(dictionaryBuffer, length,
- columnMetadata.getColumnMaxLength())) {
-
SegmentColumnarIndexCreator.addColumnMinMaxValueInfo(_segmentProperties,
columnName,
- bytesDictionary.getStringValue(0),
bytesDictionary.getStringValue(length - 1), storedType);
- }
- break;
- default:
- throw new IllegalStateException("Unsupported data type: " + dataType
+ " for column: " + columnName);
- }
- } else {
- // setting min/max for non-dictionary columns.
+ boolean isSingleValue = columnMetadata.isSingleValue();
+ PinotDataBuffer rawIndexBuffer = _segmentWriter.getIndexFor(columnName,
StandardIndexes.forward());
+ try (ForwardIndexReader rawIndexReader =
ForwardIndexReaderFactory.createRawIndexReader(rawIndexBuffer, storedType,
+ isSingleValue); ForwardIndexReaderContext readerContext =
rawIndexReader.createContext()) {
int numDocs = columnMetadata.getTotalDocs();
- PinotDataBuffer rawIndexBuffer = _segmentWriter.getIndexFor(columnName,
StandardIndexes.forward());
- boolean isSingleValue =
_segmentMetadata.getSchema().getFieldSpecFor(columnName).isSingleValueField();
- try (
- ForwardIndexReader rawIndexReader =
ForwardIndexReaderFactory.createRawIndexReader(rawIndexBuffer, storedType,
- isSingleValue); ForwardIndexReaderContext readerContext =
rawIndexReader.createContext()) {
- switch (storedType) {
- case INT: {
- int min = Integer.MAX_VALUE;
- int max = Integer.MIN_VALUE;
- if (isSingleValue) {
- for (int docId = 0; docId < numDocs; docId++) {
- int value = rawIndexReader.getInt(docId, readerContext);
+ Object minValue;
+ Object maxValue;
+ switch (storedType) {
+ case INT: {
+ int min = Integer.MAX_VALUE;
+ int max = Integer.MIN_VALUE;
+ if (isSingleValue) {
+ for (int docId = 0; docId < numDocs; docId++) {
+ int value = rawIndexReader.getInt(docId, readerContext);
+ min = Math.min(min, value);
+ max = Math.max(max, value);
+ }
+ } else {
+ for (int docId = 0; docId < numDocs; docId++) {
+ int[] values = rawIndexReader.getIntMV(docId, readerContext);
+ for (int value : values) {
min = Math.min(min, value);
max = Math.max(max, value);
}
- } else {
- for (int docId = 0; docId < numDocs; docId++) {
- int[] values = rawIndexReader.getIntMV(docId, readerContext);
- for (int value : values) {
- min = Math.min(min, value);
- max = Math.max(max, value);
- }
- }
}
-
SegmentColumnarIndexCreator.addColumnMinMaxValueInfo(_segmentProperties,
columnName, String.valueOf(min),
- String.valueOf(max), storedType);
- break;
}
- case LONG: {
- long min = Long.MAX_VALUE;
- long max = Long.MIN_VALUE;
- if (isSingleValue) {
- for (int docId = 0; docId < numDocs; docId++) {
- long value = rawIndexReader.getLong(docId, readerContext);
+ minValue = min;
+ maxValue = max;
+ break;
+ }
+ case LONG: {
+ long min = Long.MAX_VALUE;
+ long max = Long.MIN_VALUE;
+ if (isSingleValue) {
+ for (int docId = 0; docId < numDocs; docId++) {
+ long value = rawIndexReader.getLong(docId, readerContext);
+ min = Math.min(min, value);
+ max = Math.max(max, value);
+ }
+ } else {
+ for (int docId = 0; docId < numDocs; docId++) {
+ long[] values = rawIndexReader.getLongMV(docId, readerContext);
+ for (long value : values) {
min = Math.min(min, value);
max = Math.max(max, value);
}
- } else {
- for (int docId = 0; docId < numDocs; docId++) {
- long[] values = rawIndexReader.getLongMV(docId, readerContext);
- for (long value : values) {
- min = Math.min(min, value);
- max = Math.max(max, value);
- }
- }
}
-
SegmentColumnarIndexCreator.addColumnMinMaxValueInfo(_segmentProperties,
columnName, String.valueOf(min),
- String.valueOf(max), storedType);
- break;
}
- case FLOAT: {
- float min = Float.POSITIVE_INFINITY;
- float max = Float.NEGATIVE_INFINITY;
- if (isSingleValue) {
- for (int docId = 0; docId < numDocs; docId++) {
- float value = rawIndexReader.getFloat(docId, readerContext);
+ minValue = min;
+ maxValue = max;
+ break;
+ }
+ case FLOAT: {
+ float min = Float.POSITIVE_INFINITY;
+ float max = Float.NEGATIVE_INFINITY;
+ if (isSingleValue) {
+ for (int docId = 0; docId < numDocs; docId++) {
+ float value = rawIndexReader.getFloat(docId, readerContext);
+ min = Math.min(min, value);
+ max = Math.max(max, value);
+ }
+ } else {
+ for (int docId = 0; docId < numDocs; docId++) {
+ float[] values = rawIndexReader.getFloatMV(docId, readerContext);
+ for (float value : values) {
min = Math.min(min, value);
max = Math.max(max, value);
}
- } else {
- for (int docId = 0; docId < numDocs; docId++) {
- float[] values = rawIndexReader.getFloatMV(docId,
readerContext);
- for (float value : values) {
- min = Math.min(min, value);
- max = Math.max(max, value);
- }
- }
}
-
SegmentColumnarIndexCreator.addColumnMinMaxValueInfo(_segmentProperties,
columnName, String.valueOf(min),
- String.valueOf(max), storedType);
- break;
}
- case DOUBLE: {
- double min = Double.POSITIVE_INFINITY;
- double max = Double.NEGATIVE_INFINITY;
- if (isSingleValue) {
- for (int docId = 0; docId < numDocs; docId++) {
- double value = rawIndexReader.getDouble(docId, readerContext);
+ minValue = min;
+ maxValue = max;
+ break;
+ }
+ case DOUBLE: {
+ double min = Double.POSITIVE_INFINITY;
+ double max = Double.NEGATIVE_INFINITY;
+ if (isSingleValue) {
+ for (int docId = 0; docId < numDocs; docId++) {
+ double value = rawIndexReader.getDouble(docId, readerContext);
+ min = Math.min(min, value);
+ max = Math.max(max, value);
+ }
+ } else {
+ for (int docId = 0; docId < numDocs; docId++) {
+ double[] values = rawIndexReader.getDoubleMV(docId,
readerContext);
+ for (double value : values) {
min = Math.min(min, value);
max = Math.max(max, value);
}
- } else {
- for (int docId = 0; docId < numDocs; docId++) {
- double[] values = rawIndexReader.getDoubleMV(docId,
readerContext);
- for (double value : values) {
- min = Math.min(min, value);
- max = Math.max(max, value);
- }
- }
}
-
SegmentColumnarIndexCreator.addColumnMinMaxValueInfo(_segmentProperties,
columnName, String.valueOf(min),
- String.valueOf(max), storedType);
- break;
}
- case STRING: {
- String min = null;
- String max = null;
- if (isSingleValue) {
- for (int docId = 0; docId < numDocs; docId++) {
- String value = rawIndexReader.getString(docId, readerContext);
+ minValue = min;
+ maxValue = max;
+ break;
+ }
+ case BIG_DECIMAL: {
+ Preconditions.checkState(isSingleValue, "Unsupported multi-value
BIG_DECIMAL column: %s", columnName);
Review Comment:
MV is only allowed within `DIMENSION`, and it is very rare to configure
`BIG_DECIMAL` as dimension. In the future we can consider adding MV support,
but as of now we don't have APIs to read MV BigDecimal values
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