CDC exits with error: errcode=-4016 'raw data len is invalid'
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Description
Environment
- Version: observer (OceanBase)
- Revision: 1-b0f63b118eff6725f4cce27c4158c123c0c05b9c
- Build Branch: 4_4_x_release
- Build Time: Apr 13 2026 13:16:54
- Build Flags: RelWithDebInfo|Sanity
- Build Info: o...
Description
CDC (Change Data Capture) process exits with the error errcode=-4016 and the message "raw data len is invalid".
Steps to Reproduce
Not provided in the original report. The issue appears to be consistently reproducible.
Impact
CDC process failure, leading to potential disruption of data replication streams.
Proposed Solution
Not provided in the original report.
Priority
Not provided in the original report.
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
Start by tracing the CDC process path that emits errcode=-4016 and the "raw data len is invalid" message. The report provides no reproduction steps, named files, or tests, so first establish a reproducible failure from the observer build details. Done means CDC no longer exits unexpectedly and the replication stream remains operational.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- data-engineering, databases
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100