[9.3] Support multi-value dimensions in downsampling (bug fix) (#145458)#145536
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gmarouli merged 3 commits intoelastic:9.3from Apr 2, 2026
Merged
[9.3] Support multi-value dimensions in downsampling (bug fix) (#145458)#145536gmarouli merged 3 commits intoelastic:9.3from
gmarouli merged 3 commits intoelastic:9.3from
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) elastic#112645 introduced support for multi-value dimensions but downsampling was not handling that correctly. **Observed behaviour** Downsampling will store only one value in the downsampled document, if a document has more than one values for a dimension field. **Fix** After this fix, downsampling will create an object array with all the values and store that in the downsampled document. We also added extra tests. (cherry picked from commit 63dfd4a) # Conflicts: # x-pack/plugin/downsample/src/main/java/org/elasticsearch/xpack/downsample/DimensionFieldProducer.java
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