Fix MTK encoding failure with error code -4016
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dima
type: task
- Dominant language
- C++
- Stars
- 2.9k
- Forks
- 339
- Avg merge
- 1d 19h
- Merged PRs (30d)
- 52
Description
Environment
- Version: observer (OceanBase 4.5.1.0)
- Revision: 1-a7e04bdeb381c66b5221a33aa6a37e1f1f000ff9
- Build Branch: ivf_nrk
- Build Time: Jan 6 2026 14:20:41
- Build Flags: RelWithDebInfo
- Build Info: obbuild-release
Description
An MTK (Multi-Threaded Key) encoding operation has failed with error code -4016.
Impact
This error prevents the successful encoding of data, which can lead to broader operation failures depending on the context where the encoding is required.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
The report identifies an MTK encoding failure in seekdb but names no source file, test, or entry point. Start by obtaining a reproducible case for error code -4016 and locating the MTK encoding implementation and its existing tests. Done means the encoding succeeds in the reported environment and regression coverage verifies the fix.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- databases
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100