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Posted to commits@pinot.apache.org by "abhioncbr (via GitHub)" <gi...@apache.org> on 2023/06/18 16:29:23 UTC
[GitHub] [pinot] abhioncbr commented on a diff in pull request #10891: [WIP]: ensure min/max value generation in the segment metadata.
abhioncbr commented on code in PR #10891:
URL: https://github.com/apache/pinot/pull/10891#discussion_r1233335139
##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/segment/index/loader/columnminmaxvalue/ColumnMinMaxValueGenerator.java:
##########
@@ -119,65 +121,126 @@ private List<String> getColumnsToAddMinMaxValue() {
private boolean needAddColumnMinMaxValueForColumn(String columnName) {
ColumnMetadata columnMetadata = _segmentMetadata.getColumnMetadataFor(columnName);
- return columnMetadata.hasDictionary() && columnMetadata.getMinValue() == null
+ return columnMetadata.getMinValue() == null
&& columnMetadata.getMaxValue() == null && !columnMetadata.isMinMaxValueInvalid();
}
private void addColumnMinMaxValueForColumn(String columnName)
throws Exception {
// Skip column without dictionary or with min/max value already set
ColumnMetadata columnMetadata = _segmentMetadata.getColumnMetadataFor(columnName);
- if (!columnMetadata.hasDictionary() || columnMetadata.getMinValue() != null
- || columnMetadata.getMaxValue() != null) {
+ if (columnMetadata.getMinValue() != null || columnMetadata.getMaxValue() != null) {
return;
}
- PinotDataBuffer dictionaryBuffer = _segmentWriter.getIndexFor(columnName, StandardIndexes.dictionary());
DataType dataType = columnMetadata.getDataType().getStoredType();
- int length = columnMetadata.getCardinality();
- switch (dataType) {
- case INT:
- try (IntDictionary intDictionary = new IntDictionary(dictionaryBuffer, length)) {
- SegmentColumnarIndexCreator.addColumnMinMaxValueInfo(_segmentProperties, columnName,
- intDictionary.getStringValue(0), intDictionary.getStringValue(length - 1));
- }
- break;
- case LONG:
- try (LongDictionary longDictionary = new LongDictionary(dictionaryBuffer, length)) {
- SegmentColumnarIndexCreator.addColumnMinMaxValueInfo(_segmentProperties, columnName,
- longDictionary.getStringValue(0), longDictionary.getStringValue(length - 1));
- }
- break;
- case FLOAT:
- try (FloatDictionary floatDictionary = new FloatDictionary(dictionaryBuffer, length)) {
- SegmentColumnarIndexCreator.addColumnMinMaxValueInfo(_segmentProperties, columnName,
- floatDictionary.getStringValue(0), floatDictionary.getStringValue(length - 1));
- }
- break;
- case DOUBLE:
- try (DoubleDictionary doubleDictionary = new DoubleDictionary(dictionaryBuffer, length)) {
- SegmentColumnarIndexCreator.addColumnMinMaxValueInfo(_segmentProperties, columnName,
- doubleDictionary.getStringValue(0), doubleDictionary.getStringValue(length - 1));
- }
- break;
- case STRING:
- try (StringDictionary stringDictionary = new StringDictionary(dictionaryBuffer, length,
- columnMetadata.getColumnMaxLength())) {
- SegmentColumnarIndexCreator.addColumnMinMaxValueInfo(_segmentProperties, columnName,
- stringDictionary.getStringValue(0), stringDictionary.getStringValue(length - 1));
- }
- break;
- case BYTES:
- try (BytesDictionary bytesDictionary = new BytesDictionary(dictionaryBuffer, length,
- columnMetadata.getColumnMaxLength())) {
- SegmentColumnarIndexCreator.addColumnMinMaxValueInfo(_segmentProperties, columnName,
- bytesDictionary.getStringValue(0), bytesDictionary.getStringValue(length - 1));
- }
- break;
- default:
- throw new IllegalStateException("Unsupported data type: " + dataType + " for column: " + columnName);
+ if (columnMetadata.hasDictionary()) {
+ PinotDataBuffer dictionaryBuffer = _segmentWriter.getIndexFor(columnName, StandardIndexes.dictionary());
+ int length = columnMetadata.getCardinality();
+ switch (dataType) {
+ case INT:
+ try (IntDictionary intDictionary = new IntDictionary(dictionaryBuffer, length)) {
+ SegmentColumnarIndexCreator.addColumnMinMaxValueInfo(_segmentProperties, columnName,
+ intDictionary.getStringValue(0), intDictionary.getStringValue(length - 1));
+ }
+ break;
+ case LONG:
+ try (LongDictionary longDictionary = new LongDictionary(dictionaryBuffer, length)) {
+ SegmentColumnarIndexCreator.addColumnMinMaxValueInfo(_segmentProperties, columnName,
+ longDictionary.getStringValue(0), longDictionary.getStringValue(length - 1));
+ }
+ break;
+ case FLOAT:
+ try (FloatDictionary floatDictionary = new FloatDictionary(dictionaryBuffer, length)) {
+ SegmentColumnarIndexCreator.addColumnMinMaxValueInfo(_segmentProperties, columnName,
+ floatDictionary.getStringValue(0), floatDictionary.getStringValue(length - 1));
+ }
+ break;
+ case DOUBLE:
+ try (DoubleDictionary doubleDictionary = new DoubleDictionary(dictionaryBuffer, length)) {
+ SegmentColumnarIndexCreator.addColumnMinMaxValueInfo(_segmentProperties, columnName,
+ doubleDictionary.getStringValue(0), doubleDictionary.getStringValue(length - 1));
+ }
+ break;
+ case STRING:
+ try (StringDictionary stringDictionary = new StringDictionary(dictionaryBuffer, length,
+ columnMetadata.getColumnMaxLength())) {
+ SegmentColumnarIndexCreator.addColumnMinMaxValueInfo(_segmentProperties, columnName,
+ stringDictionary.getStringValue(0), stringDictionary.getStringValue(length - 1));
+ }
+ break;
+ case BYTES:
+ try (BytesDictionary bytesDictionary = new BytesDictionary(dictionaryBuffer, length,
+ columnMetadata.getColumnMaxLength())) {
+ SegmentColumnarIndexCreator.addColumnMinMaxValueInfo(_segmentProperties, columnName,
+ bytesDictionary.getStringValue(0), bytesDictionary.getStringValue(length - 1));
+ }
+ break;
+ default:
+ throw new IllegalStateException("Unsupported data type: " + dataType + " for column: " + columnName);
+ }
+ } else {
+ // setting min/max for non-dictionary columns.
+ PinotDataBuffer forwardBuffer = _segmentWriter.getIndexFor(columnName, StandardIndexes.forward());
Review Comment:
@Jackie-Jiang Can you please confirm my approach?
I am creating the `PinotDataBuffer` based on the forward index and then reading the by iterating over the doc.
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