apache/iceberg-python

PyIceberg

Stars: 1.1k
Forks: 589
Open beginner issues: 10
Indexed issues: 154
Avg merge: 2d 4h
Merged PRs (30d): 72

Dominant language: Python
License: Apache-2.0
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 14, 2026
Contributing guide: No contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue

Beginner friendly Everything

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IN predicates > 200 values disable file pruning Open

kind:bug

Difficulty 4/5 3-5 days Newbie friendliness 58/100

apache/iceberg-python#4003 · Opened Sep 20, 2026
to_bytes silently rescales a Decimal with a negative scale Open

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

apache/iceberg-python#3996 · Opened Sep 18, 2026
CLI renders table property keys and values as Rich markup without escaping Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 74/100

apache/iceberg-python#3984 · Opened Sep 16, 2026
_read_deletes filters the full delete table once per distinct file_path Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 68/100

apache/iceberg-python#3983 · Opened Sep 16, 2026
Avro decompression codecs apply no output size limit Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

apache/iceberg-python#3980 · Opened Sep 16, 2026
Deletion vector bitmap count is read from the blob and used as a loop bound without validation Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

apache/iceberg-python#3979 · Opened Sep 16, 2026
Process-global manifest cache is keyed only on manifest_path Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

apache/iceberg-python#3978 · 1 comment · Opened Sep 16, 2026
Glue table Parameters are never pruned: removed table properties persist indefinitely Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 68/100

apache/iceberg-python#3977 · 1 comment · Opened Sep 16, 2026
Paths taken from table metadata are used without containment checks against the table location Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 56/100

apache/iceberg-python#3973 · 1 comment · Opened Sep 15, 2026
Per-catalog auth state is shared: commit_table mutates the session, and cached S3FileSystem instances share a signer Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 52/100

apache/iceberg-python#3970 · 1 comment · Opened Sep 15, 2026
Add ReadRestrictions API support in REST loadTable API Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

apache/iceberg-python#3967 · 1 comment · Opened Sep 15, 2026
Make manifest records schema-aware to avoid field mismatches across format versions Open

bug

apache/iceberg-python#3957 · 1 assignee · Opened Sep 12, 2026
Implementation classes named in table properties are imported and instantiated without a type check Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 68/100

apache/iceberg-python#3932 · Opened Sep 11, 2026
Table properties override catalog configuration when constructing FileIO Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 55/100

apache/iceberg-python#3931 · Opened Sep 11, 2026
Agent Skills Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/iceberg-python#3929 · 1 comment · Opened Sep 10, 2026
Add maintenance action to remove dangling delete files Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

apache/iceberg-python#3925 · Opened Sep 9, 2026
[Feature Request] Add pyiceberg.catalog.hadoop.HadoopCatalog (filesystem-only catalog) Open

Difficulty 5/5 Over a week Newbie friendliness 42/100

apache/iceberg-python#3897 · Opened Sep 4, 2026
Concurrent writes to a remote-signing catalog go out unsigned and fail 403 Open

Difficulty 1/5 Under an hour Newbie friendliness 35/100

apache/iceberg-python#3896 · 1 comment · Opened Sep 2, 2026
Allow disabling remote signing in REST Catalog Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

apache/iceberg-python#3888 · 2 comments · Opened Sep 1, 2026
FsspecFileIO: `_adls` mutates shared properties, so a second storage account gets the first account's filesystem Open

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

apache/iceberg-python#3885 · Opened Aug 31, 2026
[Bug] PyArrowFileIO fails to propagate s3.ssl.ca-cert to pyarrow.fs.S3FileSystem tls_ca_file_path Open

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

apache/iceberg-python#3866 · 1 comment · Opened Aug 26, 2026
Async API for RestCatalog Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

apache/iceberg-python#3861 · 2 comments · Opened Aug 26, 2026
Upsert gets slow on tables with many columns Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

apache/iceberg-python#3860 · Opened Aug 26, 2026
_DeleteFiles.delete_data_file() silently drops explicit file references Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

apache/iceberg-python#3857 · 1 reaction · Opened Aug 26, 2026
Honor identity sort orders for Arrow table writes Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/iceberg-python#3848 · 1 reaction · Opened Aug 25, 2026
Support optional Parquet page index writes Open

Difficulty 2/5 1-3 hours Newbie friendliness 25/100

apache/iceberg-python#3847 · Opened Aug 25, 2026
Add support for bucket expression to table scans Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

apache/iceberg-python#3839 · 1 comment · Opened Aug 24, 2026
[Bug] REST catalog drop_table serializes purgeRequested as "True" instead of "true" Open

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

apache/iceberg-python#3836 · 1 comment · Opened Aug 24, 2026
Error when upserting and updating dataframes with dictionary encoded columns Open

Difficulty 3/5 1-2 days Newbie friendliness 50/100

apache/iceberg-python#3835 · Opened Aug 24, 2026
Null list<struct<...>> is written and read as an empty list Open

Difficulty 2/5 Half a day Newbie friendliness 45/100

apache/iceberg-python#3833 · 1 comment · 1 reaction · Opened Aug 23, 2026
IO: Consolidate PyArrow logic into io/pyarrow.py before decomposition Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

apache/iceberg-python#3812 · 1 comment · Opened Aug 19, 2026
Cannot connect to a Hive Metastore with Kerberos when the principal's host differs from the URI host Open

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

apache/iceberg-python#3787 · Opened Aug 14, 2026
Metadata inspection APIs fail with struct.error after int→long / float→double type promotion Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

apache/iceberg-python#3744 · 3 comments · Opened Aug 3, 2026
default to merge append instead of fast append Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/iceberg-python#3741 · Opened Aug 1, 2026
Decompose io/pyarrow.py into focused modules to enable pluggable compute engines Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

apache/iceberg-python#3737 · 2 comments · 1 reaction · Opened Jul 31, 2026
Pluggable Backend Interface with DataFusion for Bounded-Memory Compute Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/iceberg-python#3715 · Opened Jul 26, 2026
add test to enumerate all pyarrow types Open

Difficulty 3/5 1-2 days Newbie friendliness 65/100

apache/iceberg-python#3714 · 1 comment · Opened Jul 26, 2026
check codebase for python truthiness error Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/iceberg-python#3713 · 3 comments · Opened Jul 26, 2026
TruncateTransform.satisfies_order_of raises AttributeError for different widths Open

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

apache/iceberg-python#3680 · Opened Jul 18, 2026
Avro schema is re-converted to an Iceberg schema on every manifest read during scan planning Open

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

apache/iceberg-python#3662 · Opened Jul 15, 2026
BucketTransform fails on dictionary-encoded pyArrow arrays Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

apache/iceberg-python#3633 · 1 comment · Opened Jul 9, 2026
Support rewrite_manifests table maintenance Open

Difficulty 5/5 Over a week Newbie friendliness 38/100

apache/iceberg-python#3629 · Opened Jul 8, 2026
Support multi-argument transforms Open

Difficulty 4/5 3-5 days Newbie friendliness 58/100

apache/iceberg-python#3628 · Opened Jul 8, 2026
FsspecFileIO remote signing (S3V4RestSigner) never fires on modern aiobotocore — S3 requests sent unsigned Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

apache/iceberg-python#3625 · Opened Jul 8, 2026
Support upgrading tables to format version 3 Open

Difficulty 2/5 1-3 hours Newbie friendliness 74/100

apache/iceberg-python#3622 · Opened Jul 8, 2026
Support row lineage assignment on commit Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

apache/iceberg-python#3621 · Opened Jul 8, 2026
Support writing V3 manifests and manifest lists Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

apache/iceberg-python#3620 · Opened Jul 8, 2026
Support writing V3 metadata Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

apache/iceberg-python#3619 · 2 comments · Opened Jul 8, 2026
Support merge-on-read deletes on v2 tables Open

Difficulty 5/5 Over a week Newbie friendliness 38/100

apache/iceberg-python#3618 · 1 comment · 1 reaction · Opened Jul 8, 2026
Allow user to define a subset of columns for update detection in UPSERT Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

apache/iceberg-python#3598 · 1 comment · Opened Jul 3, 2026

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