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Daft Benchmark Report

Auto-generated by the LakeBench integration test suite.
Last updated: 2026-09-08 22:54:47 UTC

Compatibility note: Daft is unsupported as of LakeBench 2.0.0. Daft 0.7.21, used by this LakeBench test lane, cannot read Parquet files whose embedded Arrow schema uses Utf8View. The latest PyPI release tested, Daft 0.7.24, fails with the same unsupported-type error. The bundled TPC generator intentionally retains this Arrow type, so affected TPC and ELTBench loads are reported as unsupported rather than rewritten during generation. The Daft integration tests are excluded from CI and skipped unless LAKEBENCH_RUN_DAFT_INTEGRATION=1 is set.

TPC-H

❌ 0/0 queries passed (0.0%)

Load failures

Table Error
customer DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
lineitem DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
nation DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
orders DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
part DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
partsupp DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
region DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
supplier DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View

⚠️ Run terminated early: Invalid table location: C:/Users/milescole/AppData/Local/Temp/pytest-of-milescole/pytest-195/test_tpch_daft0/tpch/customer Error: Os { code: 3, kind: NotFound, message: "The system cannot find the path specified." }

TPC-DS

❌ 0/0 queries passed (0.0%)

Load failures

Table Error
call_center DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
catalog_page DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
customer DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
customer_address DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
customer_demographics DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
date_dim DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
household_demographics DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
item DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
promotion DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
reason DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
ship_mode DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
store DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
time_dim DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
warehouse DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
web_page DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
web_site DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View

⚠️ Run terminated early: Invalid table location: C:/Users/milescole/AppData/Local/Temp/pytest-of-milescole/pytest-195/test_tpcds_daft0/tpcds/call_center Error: Os { code: 2, kind: NotFound, message: "The system cannot find the file specified." }

ClickBench

⚠️ 38/43 queries passed (88.4%)

Failed queries

Querie Error
q7 InvalidSQLException: Daft error: DaftError::External Unable to create logical plan node. Due to: DaftError::AmbiguousReference Column name "EventDate" is ambiguous in schema: [Field { name: "EventDate", dtype: Date, metadata: {} }, Field { name: "EventDate", dtype: Date, metadata: {} }]
q28 InvalidSQLException: Unsupported SQL: 'Function char_length not found'
q29 InvalidSQLException: Unsupported SQL: 'Function char_length not found'
q30 InvalidSQLException: Daft error: DaftError::External Unable to create logical plan node. Due to: DaftError::AmbiguousReference Column name "ResolutionWidth" is ambiguous in schema: [Field { name: "ResolutionWidth", dtype: Int64, metadata: {} }, Field { name: "ResolutionWidth", dtype: Int64, metadata
q43 InvalidSQLException: Unsupported SQL: 'Function timestampdiff not found'

ELTBench

⚠️ 1/12 tasks passed (8.3%)

Failed tasks

Task Error
date_dim DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
store DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
item DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
customer DaftCoreException: DaftError::ValueError Unsupported Arrow DataType: Utf8View
total_sales_fact TableNotFoundError: Invalid table location: C:/Users/milescole/AppData/Local/Temp/pytest-of-milescole/pytest-195/test_eltbench_daft0/eltbench/date_dim Error: Os { code: 2, kind: NotFound, message: "The system cannot find the file specified." }
total_sales_fact TableNotFoundError: Invalid table location: C:/Users/milescole/AppData/Local/Temp/pytest-of-milescole/pytest-195/test_eltbench_daft0/eltbench/date_dim Error: Os { code: 2, kind: NotFound, message: "The system cannot find the file specified." }
total_sales_fact TableNotFoundError: Invalid table location: C:/Users/milescole/AppData/Local/Temp/pytest-of-milescole/pytest-195/test_eltbench_daft0/eltbench/date_dim Error: Os { code: 2, kind: NotFound, message: "The system cannot find the file specified." }
total_sales_fact TableNotFoundError: Invalid table location: C:/Users/milescole/AppData/Local/Temp/pytest-of-milescole/pytest-195/test_eltbench_daft0/eltbench/date_dim Error: Os { code: 2, kind: NotFound, message: "The system cannot find the file specified." }
total_sales_fact TableNotFoundError: Invalid table location: C:/Users/milescole/AppData/Local/Temp/pytest-of-milescole/pytest-195/test_eltbench_daft0/eltbench/total_sales_fact Error: Os { code: 2, kind: NotFound, message: "The system cannot find the file specified." }
total_sales_fact TableNotFoundError: Invalid table location: C:/Users/milescole/AppData/Local/Temp/pytest-of-milescole/pytest-195/test_eltbench_daft0/eltbench/total_sales_fact Error: Os { code: 2, kind: NotFound, message: "The system cannot find the file specified." }
total_sales_fact TableNotFoundError: Invalid table location: C:/Users/milescole/AppData/Local/Temp/pytest-of-milescole/pytest-195/test_eltbench_daft0/eltbench/total_sales_fact Error: Os { code: 2, kind: NotFound, message: "The system cannot find the file specified." }