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Remove second read stage during uniq index update #1258
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Remove second read stage during uniq index update #1258
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During uniq index update we had 2 read stages: 1 - read to fill missed input collumns. 2 - read to delete old index records. This patch allows to use 1 to delete old records.
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Changelog entry
During uniq index update we had 2 read stages:
1 - read to fill missed input collumns.
2 - read to delete old index records.
This patch allows to use 1 to delete old records.
Changelog category
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