ddl: fix the create table with policy will cause the PD failure

[AilinKid]

Signed-off-by: ailinkid 314806019@qq.com

What problem does this PR solve?

Issue Number: close #29006

What is changed and how it works?

Since PD will override the rule with the same ruleID in the one bundle, here we give every rule a distinguished name for one element

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

I tried the reproduced step in the issue, and this case is passed.

Release note

None

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• lcwangchao
• xhebox

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[xhebox]

The fix looks correct to me.

[xhebox]

strconv.FormatInt(int64(j), 10) is actually enough, if you don't mind about the prefixes. Prefixes are useless, IMO, you have RuleIndexTable anyway.

[AilinKid]

meaning point is that, once I get the rule, from the name we can get:
1: for which element id it serves
2: which level it's element id stays
3: how many rules for this element id

that's why I built the prefix in the previous pr, convenient for debugging and format output in practice.

[AilinKid]

/run-all-tests

[xhebox]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: dd08219

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