ticdc: add new doc for TiCDC data replication capabilities (#20967) (#21019) #21024
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Signed-off-by: ti-chi-bot <[email protected]>
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@ti-chi-bot This PR has conflicts, I have hold it. |
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Hello @ti-chi-bot, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
Summary of Changes
Hello team, gemini-code-assist here to provide a summary of this pull request. This PR, authored by ti-chi-bot and created via an automated cherry-pick of PRs #20967 and #21019, aims to enhance the TiCDC documentation. The primary goal is to add a new document specifically detailing TiCDC's data replication capabilities and to update the existing overview document to reference this new content. It's important to note that the automated cherry-pick process introduced merge conflicts in both modified files, which are visible in the patch and will need to be resolved.
Highlights
- New Documentation Added: A new markdown file (
ticdc/ticdc-data-replication-capabilities.md) has been added to the documentation set. This file is intended to provide a dedicated and detailed explanation of what types of data changes TiCDC can replicate. - Overview Document Updated: The existing TiCDC overview document (
ticdc/ticdc-overview.md) has been modified to include a link pointing readers to the newly added documentation on data replication capabilities. The link to the TiCDC GitHub repository was also updated. - Merge Conflicts Present: Due to the automated cherry-pick process, both
ticdc/ticdc-data-replication-capabilities.mdandticdc/ticdc-overview.mdcontain merge conflict markers (<<<<<<<,=======,>>>>>>>). These conflicts need to be manually resolved before the PR can be merged.
Changelog
- ticdc/ticdc-data-replication-capabilities.md
- Adds content describing supported DDL and DML statements, including handling of index operations and foreign key constraints.
- Adds content listing unsupported data changes, such as temporary tables and DQL/DCL statements.
- Includes merge conflict markers around the description of supported statements (lines 35-39 in the right-hand side of the diff).
- Includes merge conflict markers around the 'Limitations' heading (lines 49-53 in the right-hand side of the diff).
- ticdc/ticdc-overview.md
- Updates the link to the TiCDC GitHub repository from
tree/mastertotree/release-8.5(lines 10-13 in the right-hand side of the diff). - Adds a link to the new
TiCDC Data Replication Capabilitiesdocument (lines 10 and 12 in the right-hand side of the diff). - Includes merge conflict markers around the updated link and the reference to the new document (lines 9-13 in the right-hand side of the diff).
- Updates the link to the TiCDC GitHub repository from
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Code Review
This pull request aims to update documentation for TiCDC data replication capabilities. However, the current changes have introduced merge conflict markers into the Markdown files (ticdc/ticdc-data-replication-capabilities.md and ticdc/ticdc-overview.md). These conflicts must be resolved before the PR can be merged, as they prevent the documents from rendering correctly and make the content unreadable.
Once the conflicts are addressed, the intended changes appear to be minor textual adjustments. Please resolve the conflicts, ensuring the correct content is chosen for each conflicting section.
Summary of Findings
- Merge Conflict Markers: Critical merge conflict markers are present in
ticdc/ticdc-data-replication-capabilities.mdandticdc/ticdc-overview.md. These must be resolved by removing the markers and choosing the correct version of the conflicting content. - Punctuation and Spacing: A conflict in
ticdc/ticdc-data-replication-capabilities.mdhighlighted a missing space before a parenthesis. The suggested resolution improves readability and adheres to standard punctuation. - Invisible Characters: A heading in
ticdc/ticdc-data-replication-capabilities.mdcontained a trailing zero-width space within a conflict. This has been addressed in the suggested resolution. - URL Inconsistency in Merge Conflict: A merge conflict in
ticdc/ticdc-overview.mdinvolves two different GitHub URLs. The author needs to select the appropriate URL for the intended branches.
Merge Readiness
This pull request cannot be merged in its current state due to the presence of critical merge conflict markers in the documentation files. These markers prevent the documents from rendering correctly and make the content ambiguous. The author must resolve these conflicts first.
Once the conflicts are resolved, the intended changes appear to be minor. However, due to the critical nature of the existing issues, I recommend that these changes be made before the PR is considered for merging. As a reviewer, I am not authorized to approve pull requests, but addressing these conflicts is essential for the PR's viability.
| <<<<<<< HEAD | ||
| - DDL and DML statements(excluding system tables). | ||
| ======= | ||
| - DDL and DML statements (excluding system tables). | ||
| >>>>>>> 4687444356 (ticdc: add new doc for TiCDC data replication capabilities (#20967) (#21019)) |
There was a problem hiding this comment.
There are merge conflict markers (<<<<<<< HEAD, =======, >>>>>>>) in this section. These need to be removed.
Between the two conflicting versions:
DDL and DML statements(excluding system tables).DDL and DML statements (excluding system tables).
The second version, which includes a space before the opening parenthesis (excluding system tables), is preferred for better readability and standard punctuation.1
Please resolve the conflict by removing the markers and using the corrected line.
Style Guide References
| <<<<<<< HEAD | |
| - DDL and DML statements(excluding system tables). | |
| ======= | |
| - DDL and DML statements (excluding system tables). | |
| >>>>>>> 4687444356 (ticdc: add new doc for TiCDC data replication capabilities (#20967) (#21019)) | |
| - DDL and DML statements (excluding system tables). |
Footnotes
| <<<<<<< HEAD | ||
| ## Limitations | ||
| ======= | ||
| ## Limitations | ||
| >>>>>>> 4687444356 (ticdc: add new doc for TiCDC data replication capabilities (#20967) (#21019)) |
There was a problem hiding this comment.
This section contains merge conflict markers (<<<<<<< HEAD, =======, >>>>>>>). These must be resolved.
One of the conflicting lines for the heading is ## Limitations which appears to have a zero-width space character at the end. The other version is ## Limitations.
The version without the trailing zero-width space (## Limitations) is cleaner and preferred to avoid potential rendering or processing issues.1
Please remove the conflict markers and the zero-width space.
Style Guide References
| <<<<<<< HEAD | |
| ## Limitations | |
| ======= | |
| ## Limitations | |
| >>>>>>> 4687444356 (ticdc: add new doc for TiCDC data replication capabilities (#20967) (#21019)) | |
| ## Limitations |
Footnotes
ticdc/ticdc-overview.md
Outdated
| <<<<<<< HEAD | ||
| [TiCDC](https://github.com/pingcap/tiflow/tree/master/cdc) is a tool used to replicate incremental data from TiDB. Specifically, TiCDC pulls TiKV change logs, sorts captured data, and exports row-based incremental data to downstream databases. For detailed data replication capabilities, see [TiCDC Data Replication Capabilities](/ticdc/ticdc-data-replication-capabilities.md). | ||
| ======= | ||
| [TiCDC](https://github.com/pingcap/tiflow/tree/release-8.5/cdc) is a tool used to replicate incremental data from TiDB. Specifically, TiCDC pulls TiKV change logs, sorts captured data, and exports row-based incremental data to downstream databases. For detailed data replication capabilities, see [TiCDC Data Replication Capabilities](/ticdc/ticdc-data-replication-capabilities.md). | ||
| >>>>>>> 4687444356 (ticdc: add new doc for TiCDC data replication capabilities (#20967) (#21019)) |
There was a problem hiding this comment.
Merge conflict markers (<<<<<<< HEAD, =======, >>>>>>>) are present here, indicating a conflict in the URL for the TiCDC GitHub link.
The conflicting links are:
https://github.com/pingcap/tiflow/tree/master/cdchttps://github.com/pingcap/tiflow/tree/release-8.5/cdc
These markers must be removed. For documentation that applies to multiple versions including master, linking to the master branch (https://github.com/pingcap/tiflow/tree/master/cdc) is often preferred as it points to the latest development. However, since this is a cherry-pick and targets multiple versions including v8.5, please confirm the correct link to use. If this file instance is for the master branch, the master link is suggested. If different links are needed for different branches, this should be handled by the branching/cherry-pick process rather than having conflicts in the file.
Assuming the master link is appropriate for the primary target of this PR:
| <<<<<<< HEAD | |
| [TiCDC](https://github.com/pingcap/tiflow/tree/master/cdc) is a tool used to replicate incremental data from TiDB. Specifically, TiCDC pulls TiKV change logs, sorts captured data, and exports row-based incremental data to downstream databases. For detailed data replication capabilities, see [TiCDC Data Replication Capabilities](/ticdc/ticdc-data-replication-capabilities.md). | |
| ======= | |
| [TiCDC](https://github.com/pingcap/tiflow/tree/release-8.5/cdc) is a tool used to replicate incremental data from TiDB. Specifically, TiCDC pulls TiKV change logs, sorts captured data, and exports row-based incremental data to downstream databases. For detailed data replication capabilities, see [TiCDC Data Replication Capabilities](/ticdc/ticdc-data-replication-capabilities.md). | |
| >>>>>>> 4687444356 (ticdc: add new doc for TiCDC data replication capabilities (#20967) (#21019)) | |
| [TiCDC](https://github.com/pingcap/tiflow/tree/master/cdc) is a tool used to replicate incremental data from TiDB. Specifically, TiCDC pulls TiKV change logs, sorts captured data, and exports row-based incremental data to downstream databases. For detailed data replication capabilities, see [TiCDC Data Replication Capabilities](/ticdc/ticdc-data-replication-capabilities.md). |
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: lilin90 The full list of commands accepted by this bot can be found here. The pull request process is described here
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This is an automated cherry-pick of #21019
This is an automated cherry-pick of #20967
First-time contributors' checklist
What is changed, added or deleted? (Required)
Which TiDB version(s) do your changes apply to? (Required)
Tips for choosing the affected version(s):
By default, CHOOSE MASTER ONLY so your changes will be applied to the next TiDB major or minor releases. If your PR involves a product feature behavior change or a compatibility change, CHOOSE THE AFFECTED RELEASE BRANCH(ES) AND MASTER.
For details, see tips for choosing the affected versions.
What is the related PR or file link(s)?
Do your changes match any of the following descriptions?