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Improve performance in JSON reader when mixed_types_as_string option is enabled #15236

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merged 4 commits into from
Mar 8, 2024
Merged

Improve performance in JSON reader when mixed_types_as_string option is enabled #15236

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426f5bc
applying patch for mixed type perf improvement
shrshi Mar 5, 2024
8405d03
Merge branch 'branch-24.04' into mixed_types_patch
shrshi Mar 8, 2024
3b3a143
fix merge issue.
karthikeyann Mar 8, 2024
56b3031
Merge branch 'branch-24.04' into mixed_types_patch
karthikeyann Mar 8, 2024
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3 changes: 3 additions & 0 deletions cpp/src/io/json/json_column.cu
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Original file line number Diff line number Diff line change
Expand Up @@ -674,6 +674,7 @@ void make_device_json_column(device_span<SymbolT const> input,
reinitialize_as_string(old_col_id, col);
// all its children (which are already inserted) are ignored later.
}
col.forced_as_string_column = true;
columns.try_emplace(this_col_id, columns.at(old_col_id));
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continue;
}
Expand Down Expand Up @@ -915,6 +916,8 @@ std::pair<std::unique_ptr<column>, std::vector<column_name_info>> device_json_co
: "n/a");
#endif
target_type = schema.value().type;
} else if (json_col.forced_as_string_column) {
target_type = data_type{type_id::STRING};
}
// Infer column type, if we don't have an explicit type for it
else {
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2 changes: 2 additions & 0 deletions cpp/src/io/json/nested_json.hpp
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Expand Up @@ -160,6 +160,8 @@ struct device_json_column {
std::vector<std::string> column_order;
// Counting the current number of items in this column
row_offset_t num_rows = 0;
// Force as string column
bool forced_as_string_column{false};

/**
* @brief Construct a new d json column object
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