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Enable large numeric blocks for TSDB codec in production #139503

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Merged
kkrik-es merged 5 commits into from
Dec 15, 2025
Merged

Enable large numeric blocks for TSDB codec in production #139503

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125bfd3
Enable large numeric blocks for TSDB codec
kkrik-es Dec 14, 2025
af833a6
Update docs/changelog/139503.yaml
kkrik-es Dec 14, 2025
2f8d5ea
[CI] Auto commit changes from spotless
Dec 14, 2025
e8359b4
add highlight
kkrik-es Dec 14, 2025
d60b504
Merge branch 'main' into tsdb/enable-large-numeric-block
kkrik-es Dec 15, 2025
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13 changes: 13 additions & 0 deletions docs/changelog/139503.yaml
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@@ -0,0 +1,13 @@
pr: 139503
summary: Enable large numeric blocks for TSDB codec in production
area: Codec
type: enhancement
issues: []
highlight:
title: Enable large numeric blocks for TSDB codec
body: |-
The size of numeric blocks gets increased from 128 to 512, for indices with [index.mode:time-series].
This mostly improves compression for multi-values in fields using sorted-set doc values, such as keyword and
ip fields, as run-length encoding covers more data for the same storage footprint.

notable: true
7 changes: 1 addition & 6 deletions server/src/main/java/org/elasticsearch/index/codec/PerFieldFormatSupplier.java
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Expand Up @@ -14,7 +14,6 @@
import org.apache.lucene.codecs.PostingsFormat;
import org.apache.lucene.codecs.lucene90.Lucene90DocValuesFormat;
import org.elasticsearch.common.util.BigArrays;
import org.elasticsearch.common.util.FeatureFlag;
import org.elasticsearch.index.IndexMode;
import org.elasticsearch.index.IndexSettings;
import org.elasticsearch.index.IndexVersions;
Expand Down Expand Up @@ -44,8 +43,6 @@ public class PerFieldFormatSupplier {
private static final Set<String> INCLUDE_META_FIELDS;
private static final Set<String> EXCLUDE_MAPPER_TYPES;

private static final boolean TSDB_USE_LARGE_NUMERIC_BLOCKS = new FeatureFlag("tsdb_large_numeric_blocks").isEnabled();

static {
// TODO: should we just allow all fields to use tsdb doc values codec?
// Avoid using tsdb codec for fields like _seq_no, _primary_term.
Expand All @@ -63,9 +60,7 @@ public class PerFieldFormatSupplier {
private static final DocValuesFormat docValuesFormat = new Lucene90DocValuesFormat();
private static final KnnVectorsFormat knnVectorsFormat = new ES93HnswVectorsFormat();
private static final ES819TSDBDocValuesFormat tsdbDocValuesFormat = ES819TSDBDocValuesFormat.getInstance(false);
private static final ES819TSDBDocValuesFormat tsdbDocValuesFormatLargeNumericBlock = ES819TSDBDocValuesFormat.getInstance(
TSDB_USE_LARGE_NUMERIC_BLOCKS
);
private static final ES819TSDBDocValuesFormat tsdbDocValuesFormatLargeNumericBlock = ES819TSDBDocValuesFormat.getInstance(true);
private static final ES812PostingsFormat es812PostingsFormat = new ES812PostingsFormat();
private static final PostingsFormat completionPostingsFormat = PostingsFormat.forName("Completion101");

Expand Down