[shuwenwei]

Summary

• Use the tablet effective rowCount when constructing table-model redirect endpoints.
• Add a regression test with spare backing-array capacity beyond the valid rows.

Problem

Tablet backing arrays may contain more slots than the number of valid rows represented by rowCount. RelationalInsertTabletNode.splitByReplicaSet() iterated over times.length, while device IDs are computed for rowCount rows. This could process rows outside the valid range and throw ArrayIndexOutOfBoundsException during write planning.

Fix

Build the redirect node list using rowCount, matching the rows that are actually part of the tablet.

Example

Before: a relational tablet with rowCount = 2 and four timestamp slots could fail with ArrayIndexOutOfBoundsException during redirect construction.
After: only the two valid rows produce redirect entries and planning completes normally.

Validation

• Ran ./mvnw spotless:apply -pl iotdb-core/datanode.
• Tests and compilation were not run locally; CI will validate them.

[sonarqubecloud]

Quality Gate failed

Failed conditions
B Reliability Rating on New Code (required ≥ A)

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 48.89%. Comparing base (509c395) to head (b3d4c5f).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #19221      +/-   ##
============================================
- Coverage     48.89%   48.89%   -0.01%     
  Complexity      689      689              
============================================
  Files          5588     5588              
  Lines        413407   413407              
  Branches      54526    54526              
============================================
- Hits         202120   202116       -4     
- Misses       211287   211291       +4     

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