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TDSQL Boundless

DocumentationTDSQL BoundlessGeneral ReferenceDatabase Parameter Descriptiontdstore_bulk_load_total_merge_buffer_size

tdstore_bulk_load_total_merge_buffer_size

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Last updated: 2026-05-26 17:00:08

Feature Description

In bulkload data import scenarios, typically, the data volume of each bulkload transaction is relatively large, ranging from several hundred MB to GB. Therefore, the data within a bulkload transaction is saved in temporary data files before being committed, which reduces and controls memory overhead. For unordered data (such as secondary index data) in a bulkload transaction, external merge sorting is performed during the transaction commit phase.
tdstore_bulk_load_total_merge_buffer_size is used to specify the total size, in bytes, of the memory buffer for external merge sorting during a BulkLoad transaction.

Attribute Description

Required
Description
Parameter Type
ULONGLONG
Default Value
33554432
Value Range
4194304 ~ 18446744073709551615
Effective Scope
GLOBAL
Restart Required
No
Previous Topic: tdstore_bulk_load_merge_chunk_sizeNext Topic: tdstore_data_import_rate_limiter_bytes_per_sec

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