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Experiment with using tsdb doc values codec for _seq_no. #133788

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Merged
merged 3 commits into from
Aug 29, 2025
Merged

Experiment with using tsdb doc values codec for _seq_no. #133788

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a6cde48
Experiment with using tsdb doc values codec for _seq_no.
martijnvg Aug 29, 2025
b8416cf
added feature flag
martijnvg Aug 29, 2025
40cac8c
Merge remote-tracking branch 'es/main' into tsdb_codec_and_seqno
martijnvg Aug 29, 2025
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7 changes: 6 additions & 1 deletion server/src/main/java/org/elasticsearch/index/codec/PerFieldFormatSupplier.java
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,7 @@
import org.elasticsearch.index.mapper.IdFieldMapper;
import org.elasticsearch.index.mapper.Mapper;
import org.elasticsearch.index.mapper.MapperService;
import org.elasticsearch.index.mapper.SeqNoFieldMapper;
import org.elasticsearch.index.mapper.vectors.DenseVectorFieldMapper;

/**
Expand Down Expand Up @@ -122,9 +123,13 @@ boolean useTSDBDocValuesFormat(final String field) {
}

private boolean excludeFields(String fieldName) {
// TODO: should we just allow all fields to use tsdb doc values codec?
// Avoid using tsdb codec for fields like _seq_no, _primary_term.
// But _tsid and _ts_routing_hash should always use the tsdb codec.
return fieldName.startsWith("_") && fieldName.equals("_tsid") == false && fieldName.equals("_ts_routing_hash") == false;
return fieldName.startsWith("_")
&& fieldName.equals("_tsid") == false
&& fieldName.equals("_ts_routing_hash") == false
&& fieldName.equals(SeqNoFieldMapper.NAME) == false;
}

private boolean isTimeSeriesModeIndex() {
Expand Down