[8.19] Use local segment fieldInfos to lookup tsdb merge stats (#132597)#132613
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elasticsearchmachine merged 1 commit intoelastic:8.19from Aug 9, 2025
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Merging shrink TSDB or LogsDB indices can fail in versions 8.19 or 9.1+. When shrinking an index to a single shard, we use addIndexes, which can add Lucene segments directly. In this case, FieldInfos can differ between shards and the new segment. We should use the FieldInfos from each segment to retrieve the merge stats, instead of the FieldInfos of the merged segment. Relates elastic#125403
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