bytedance/bolt

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Stars: 178
Forks: 107
Open beginner issues: 5
Indexed issues: 77
Avg merge: 3d 5h
Merged PRs (30d): 42

Dominant language: C++
License: Apache-2.0
Last GitHub push: Sep 17, 2026
Latest indexed: Sep 14, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue

Beginner friendly Everything

Open All

72 open issues indexed

[Feature] Support ve-tos filesystem using the TOS C++ SDK Open

enhancement needs triage

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

bytedance/bolt#1023 · Opened Sep 20, 2026
[Bug] Shutdown-time use-after-free in Arrow shuffle buffers and trace contexts Open

bug needs triage

bytedance/bolt#1019 · 1 assignee · Opened Sep 20, 2026
[Feature] Support Paimon ORC reads with correct physical row mapping Open

enhancement needs triage

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

bytedance/bolt#1013 · Opened Sep 16, 2026
[Build] Parquet dependency conflicts between conan and system lib Open

build needs triage

Difficulty 3/5 1-2 days Newbie friendliness 64/100

bytedance/bolt#1008 · Opened Sep 15, 2026
[Feature] Introduce TaskManager for task lifecycle management Open

enhancement needs triage

bytedance/bolt#1006 · 1 assignee · Opened Sep 15, 2026
[Build] setup-dev-env.sh generates an unusable Conan profile on Apple Clang 18+ Open

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

bytedance/bolt#991 · Opened Sep 10, 2026
[Bug] Truncated Parquet definition levels produce a generic decoder failure Open

bug needs triage

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

bytedance/bolt#980 · Opened Sep 7, 2026
[Compatibility] Spark result mismatches found by differential fuzzing (single-SQL repros) Open

compatibility needs triage

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

bytedance/bolt#977 · Opened Sep 7, 2026
[Bug] Timezone offset diverges from Spark: DST not extrapolated past 2037, and legacy uses LMT before standardization Open

bug

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

bytedance/bolt#965 · Opened Sep 4, 2026
macOS build fails: glog with_unwind set unconditionally in conanfile.py Open

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

bytedance/bolt#951 · Opened Sep 2, 2026
[Bug] DWRF selective reader fails nested BIGINT-to-VARCHAR and VARCHAR-to-BOOLEAN schema evolution Open

bug needs triage

Difficulty 4/5 3-5 days Newbie friendliness 45/100

bytedance/bolt#941 · Opened Aug 27, 2026
[Performance] Collapse dictionary-over-dictionary probe columns in NestedLoopJoin output Open

performance

bytedance/bolt#934 · 1 assignee · Opened Aug 25, 2026
[Feature] Support Spark format_string Open

enhancement needs triage

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

bytedance/bolt#928 · 1 comment · Opened Aug 24, 2026
[Feature] Support Spark shiftrightunsigned Open

enhancement needs triage

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

bytedance/bolt#927 · Opened Aug 24, 2026
[Feature] Support Spark bround Open

enhancement needs triage

Difficulty 4/5 3-5 days Newbie friendliness 65/100

bytedance/bolt#926 · 1 comment · Opened Aug 24, 2026
[Feature] Support Spark encode Open

enhancement needs triage

Difficulty 4/5 3-5 days Newbie friendliness 68/100

bytedance/bolt#925 · 2 comments · Opened Aug 24, 2026
[Feature] Support Spark decode Open

enhancement needs triage

Difficulty 4/5 3-5 days Newbie friendliness 57/100

bytedance/bolt#924 · 2 comments · Opened Aug 24, 2026
[Feature] Support Spark elt Open

enhancement needs triage

Difficulty 4/5 3-5 days Newbie friendliness 62/100

bytedance/bolt#923 · 3 comments · Opened Aug 24, 2026
[Feature] Make json_to_map control-character handling configurable Open

enhancement needs triage

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

bytedance/bolt#921 · Opened Aug 24, 2026
[Bug] Write-file close failures can repeat stream and io_uring teardown Open

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

bytedance/bolt#919 · Opened Aug 22, 2026
[Bug] CachedFactory deadlocks after cache insertion throws Open

Difficulty 4/5 3-5 days Newbie friendliness 68/100

bytedance/bolt#918 · Opened Aug 22, 2026
[Build] Conan package metadata exposes Linux-only dependencies on macOS Open

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

bytedance/bolt#917 · Opened Aug 22, 2026
[Build] Clang devcontainer installs nonexistent clang++-19 package Open

Difficulty 2/5 1-3 hours Newbie friendliness 84/100

bytedance/bolt#916 · Opened Aug 22, 2026
[Build] BOLT_BUILD_TESTING omits required test utility targets Open

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

bytedance/bolt#915 · Opened Aug 22, 2026
[Bug] date_add overflows while scaling week and quarter offsets Open

Difficulty 2/5 1-3 hours Newbie friendliness 84/100

bytedance/bolt#910 · Opened Aug 22, 2026
[Documentation] Fix invalid Git commands and link in contribution workflow Open

Difficulty 2/5 1-3 hours Newbie friendliness 92/100

bytedance/bolt#909 · Opened Aug 22, 2026
[Feature] from_json: support spark.sql.json.enablePartialResults=false semantics Open

compatibility enhancement needs triage

Difficulty 5/5 Over a week Newbie friendliness 48/100

bytedance/bolt#902 · Opened Aug 20, 2026
[Performance] Aggregate functions: add DictionaryVector fast-path for numeric inputs Open

performance

bytedance/bolt#896 · 1 assignee · Opened Aug 19, 2026
[Bug] Expose peak allocated bytes in shuffle writer metrics Open

bug needs triage

Difficulty 3/5 1-2 days Newbie friendliness 58/100

bytedance/bolt#854 · Opened Aug 10, 2026
[Feature] Add a configurable partition-column product threshold for adaptive row-based shuffle Open

enhancement needs triage performance

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

bytedance/bolt#853 · Opened Aug 10, 2026
[Bug] Parquet reader OOM (MEM_CAP_EXCEEDED) decoding definition levels for very large pages Open

bug needs triage

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

bytedance/bolt#839 · Opened Aug 6, 2026
[Bug] null count may be negetive in column stats when filtering row groups Open

bug needs triage

bytedance/bolt#795 · 1 assignee · Opened Jul 28, 2026
[Feature] Adopt new allocators for fast allocating and reduce RSS Open

enhancement needs triage

Difficulty 5/5 Over a week Newbie friendliness 28/100

bytedance/bolt#789 · Opened Jul 27, 2026
[Feature] Support Spark bitmap_bucket_number Open

enhancement good first issue needs triage

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

bytedance/bolt#759 · Opened Jul 20, 2026
[Feature] Support Spark bitmap_bit_position Open

enhancement good first issue needs triage

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

bytedance/bolt#758 · Opened Jul 20, 2026
[Feature] Support Spark 4 Parquet integer and Decimal schema evolution Open

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

bytedance/bolt#753 · 1 comment · Opened Jul 20, 2026
[Feature] implement json_object_keys for sparksql Open

enhancement good first issue needs triage

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

bytedance/bolt#742 · 1 comment · Opened Jul 15, 2026
[Feature] support FIRST_WIN mode for map_concat Open

enhancement needs triage

Difficulty 3/5 1-2 days Newbie friendliness 45/100

bytedance/bolt#730 · Opened Jul 9, 2026
[Chore] ci broken due to npm error Open

bytedance/bolt#714 · 1 assignee · Opened Jul 6, 2026
[Build] set libc/version as conan settings Open

build needs triage

Difficulty 3/5 1-2 days Newbie friendliness 45/100

bytedance/bolt#711 · Opened Jul 6, 2026
[Chore] dynamically set C++ standard based on compiler version Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

bytedance/bolt#709 · Opened Jul 6, 2026
[Compatibility] Spark get_json_object parity gaps for malformed JSON and JSONPath edge cases Open

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

bytedance/bolt#688 · Opened Jun 30, 2026
[Bug] Parquet reader can fail seeking past known repdefs for repeated columns Open

bug

bytedance/bolt#624 · 1 assignee · Opened Jun 2, 2026
[Chore] add script and workflow to run gluten UT Open

Difficulty 4/5 3-5 days Newbie friendliness 50/100

bytedance/bolt#588 · Opened May 25, 2026
[Feature][BufferManager] Support `BufferManager` in StreamingWindowBuild Open

enhancement

bytedance/bolt#574 · 1 assignee · Opened May 19, 2026
[Feature] Optimize ParquetRowReader::Impl::skip to avoid io for skipped row groups Open

enhancement needs triage

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

bytedance/bolt#530 · Opened Apr 28, 2026
[Feature] Pre-built JIT IR: compile C++ kernels to bitcode for JIT inlining Open

enhancement needs triage

Difficulty 5/5 Over a week Newbie friendliness 30/100

bytedance/bolt#502 · Opened Apr 14, 2026
[Chore] refactor FileSystem interface out of Hive connector Open

Difficulty 4/5 3-5 days Newbie friendliness 50/100

bytedance/bolt#471 · 1 comment · Opened Apr 1, 2026
[Chore] Enable AddressSanitizer and ThreadSanitizer in CI Open

ci good first issue Test

Difficulty 4/5 3-5 days Newbie friendliness 45/100

bytedance/bolt#394 · 1 comment · Opened Mar 13, 2026
[Bug] Flaky Test "SharedArbitrationTestWithParallelExecutionModeOnly.concurrentArbitration" Open

bug ci needs triage Test

bytedance/bolt#374 · 1 comment · 1 assignee · Opened Mar 11, 2026

bytedance/bolt

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