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ドキュメントTDSQL BoundlessGeneral ReferenceDatabase Parameter Descriptiontdstore_bulk_load_merge_chunk_size

tdstore_bulk_load_merge_chunk_size

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最終更新日: 2026-03-27 18:31:17

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_merge_chunk_size is used to set the memory size in bytes for caching data before external merging and sorting of unordered data in a bulkload transaction.

Attribute Description

Required
Description
Parameter Type
ULONGLONG
Default Value
33554432
Value Range
1048576 ~ 18446744073709551615
Effective Scope
GLOBAL
Restart Required
No
前の記事へ: tdsql_use_tdstore_estimated_rows次の記事へ: tdstore_bulk_load_total_merge_buffer_size

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