duckdb/ducklake

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DuckLake is an integrated data lake and catalog format

Stars: 3k
Forks: 252
Open beginner issues: 0
Indexed issues: 142
Avg merge: 4d 7h
Merged PRs (30d): 30

Dominant language: C++
License: MIT
Last GitHub push: Sep 14, 2026
Latest indexed: Sep 15, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

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139 open issues indexed

MySQL Catalog fails on 2nd insert to a table Open

duckdb/ducklake#51 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Reattach a ducklake with MySQL catalog Open

duckdb/ducklake#70 · 12 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Connect ducklake to azure Open

duckdb/ducklake#76 · 2 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Lock contention at MultiFileFunction::TryInitializeNextBatch and CopyToFunctionLocalState::FlushPartitions Open

duckdb/ducklake#106 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
duckdb.duckdb.TransactionException Open

duckdb/ducklake#158 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Local build instructions need updating Open

duckdb/ducklake#182 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Adding columns without rewriting the whole dataset Open

duckdb/ducklake#204 · 3 comments · 4 reactions · 0 assignees · Indexed Sep 15, 2026
Mysql Catalog Cleanup Error Open

duckdb/ducklake#210 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Blob storage full handling | CLI crashes? Open

duckdb/ducklake#212 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
MySQL catalog fails the second time it is attached Open

duckdb/ducklake#214 · 4 comments · 5 reactions · 0 assignees · Indexed Sep 15, 2026
Parquet files generated from a random process Open

duckdb/ducklake#223 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Support target_file_size when using partitioning Open

duckdb/ducklake#224 · 2 comments · 11 reactions · 0 assignees · Indexed Sep 15, 2026
Error when migrating from ducklake 0.1 to 0.2 Open

duckdb/ducklake#240 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
possible regression: GCS secret fails to load for DuckLake Open

duckdb/ducklake#250 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
DuckLake expire snapshot problem Open

duckdb/ducklake#259 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`ducklake_add_data_files` function does not work under Linux for Azure ADLS PATH parameter Open

duckdb/ducklake#272 · 2 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
ducklake fails to update table stats on insert into ducklake table on mysql Open

reproduced

duckdb/ducklake#288 · 6 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
Orphaned files on failed inserts Open

needs reproducible example

duckdb/ducklake#300 · 8 comments · 5 reactions · 0 assignees · Indexed Sep 15, 2026
Partitioning on creating table? Open

enhancement

duckdb/ducklake#301 · 6 comments · 26 reactions · 0 assignees · Indexed Sep 15, 2026
NULL shared_ptr dereference internal exception caused by table_stats `table_id` equal to a `view_id` Open

needs reproducible example

duckdb/ducklake#322 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
MySQL needs METADATA_PATH but only after DuckLake is initialized Open

reproduced

duckdb/ducklake#385 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Failed to perform CHECKPOINT Open

needs reproducible example

duckdb/ducklake#481 · 3 comments · 3 reactions · 0 assignees · Indexed Sep 15, 2026
Adding partition to unused table causes transaction conflicts Open

under review

duckdb/ducklake#512 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Merge Bugs - No Prevention Of Duplicates In Source - And Multi-Partition Problem (Based On Same Field) Open

reproduced

duckdb/ducklake#520 · 4 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
ducklake catalog backup fails on 'Missing Extension Error' Open

Needs Documentation

duckdb/ducklake#524 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
UPDATE on ducklake table with imported files fails w/ struct fields in predicate Open

reproduced

duckdb/ducklake#552 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Concurrent ATTACH to existing instance Open

needs triage

duckdb/ducklake#561 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Hive partition metadata should be populated by `ducklake_add_data_files` Open

reproduced

duckdb/ducklake#579 · 11 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
ducklake fails with IO Error on s3 with table scan queries Open

question

duckdb/ducklake#605 · 11 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Failed to perform CHECKPOINT; Files have different hive partition path Open

needs reproducible example

duckdb/ducklake#606 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
0 size parquet file created upon ingestion. Open

needs reproducible example

duckdb/ducklake#609 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Data Inlining Causing Binder Error for columns > 64 characters Open

reproduced

duckdb/ducklake#619 · 5 comments · 3 reactions · 0 assignees · Indexed Sep 15, 2026
ducklake fails to update ducklake_table_column_stats table after alter table statement Open

reproduced

duckdb/ducklake#625 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
ducklake does not automatically load azure extension Open

enhancement

duckdb/ducklake#659 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
set_option('delete_older_than', '0 hours') deleted all data when using abfss as a data path Open

needs reproducible example

duckdb/ducklake#669 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
No magic bytes found at end of file [dirty writes, unsafe shutdown] Open

needs triage

duckdb/ducklake#680 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`ducklake_merge_adjacent_files` very slow Open

needs reproducible example

duckdb/ducklake#687 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
unittest does not use local_extension_repo Open

needs triage

duckdb/ducklake#722 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Cannot select snapshots after running certain update statements Open

needs reproducible example

duckdb/ducklake#733 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`IcebergMultiFileReader` potential problem with virtual columns and default columns Open

needs reproducible example

duckdb/ducklake#794 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
ducklake_delete_orphaned_files `older_than` filter is off by UTC offset on Windows — orphaned files are not detected on UTC+N machines Open

needs triage

duckdb/ducklake#816 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Multiple catalog pointers when attaching to multiple ducklake databases with a single data catalog Open

needs triage

duckdb/ducklake#833 · 0 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
cleanup_old_files and delete_orphaned_files fail on GCS (S3 batch delete not supported) Open

duckdb/ducklake#836 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Copying From Iceberg Open

under review

duckdb/ducklake#837 · 18 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Inserting from Arrow table with timestamp into ducklake with data inlining and postgres metadata insert as VARCHAR Open

reproduced

duckdb/ducklake#843 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Memory leak with Catalog snapshots stored per schema version for connection lifetime Open

needs triage

duckdb/ducklake#852 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
DuckLake file pruning fails when filter predicate requires constant folding Open

needs triage

duckdb/ducklake#918 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Disagreement between ducklake extension and ducklake spec Open

needs triage

duckdb/ducklake#924 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
ducklake_rewrite_data_files leaks memory even if nothing to rewrite Open

needs triage

duckdb/ducklake#927 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
ducklake_merge_adjacent_files leaks memory if there are empty tables in addition to a non empty table with auto_compact Open

needs triage

duckdb/ducklake#929 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 15, 2026

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