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25.8.16 Stable: disable write_marks_for_substreams_in_compact_parts by default #1407

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Merged
zvonand merged 1 commit into from
Feb 17, 2026
+1 −2
Merged

25.8.16 Stable: disable write_marks_for_substreams_in_compact_parts by default #1407

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1 change: 0 additions & 1 deletion src/Core/SettingsChangesHistory.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -875,7 +875,6 @@ const VersionToSettingsChangesMap & getMergeTreeSettingsChangesHistory()
{"shared_merge_tree_virtual_parts_discovery_batch", 1, 1, "New setting"},
{"max_digestion_size_per_segment", 256_MiB, 256_MiB, "Obsolete setting"},
{"shared_merge_tree_update_replica_flags_delay_ms", 30000, 30000, "New setting"},
{"write_marks_for_substreams_in_compact_parts", false, true, "Enable writing marks for substreams in compact parts by default"},
{"allow_part_offset_column_in_projections", false, true, "Now projections can use _part_offset column."},
{"max_uncompressed_bytes_in_patches", 0, 30ULL * 1024 * 1024 * 1024, "New setting"},
});
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2 changes: 1 addition & 1 deletion src/Storages/MergeTree/MergeTreeSettings.cpp
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Expand Up @@ -289,7 +289,7 @@ namespace ErrorCodes
- `v2`
- `v3`
)", 0) \
DECLARE(Bool, write_marks_for_substreams_in_compact_parts, true, R"(
DECLARE(Bool, write_marks_for_substreams_in_compact_parts, false, R"(
Enables writing marks per each substream instead of per each column in Compact parts.
It allows to read individual subcolumns from the data part efficiently.
)", 0) \
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