[Enhancement]: Merge IndexNode and DataNode

[bigsheeper]

Is there an existing issue for this?

• I have searched the existing issues

What would you like to be added?

Target Version:

v2.6

Plan:

• Merge DataNode and IndexNode into DataNode. The new deployment model will include:
  • MixCoord
  • QueryNodes
  • DataNodes
  • StreamingNodes
• The merged DataNode will handle the following functions:
  • Compaction
  • Import
  • Index building
  • Statistics
  • Analysis
• No toggles are required; the merged version will no longer support IndexNode.
• Additional changes:
  • Remove IndexNode sessions, retaining only DataNode sessions.
  • Keep the current IndexNode RPC interface definitions unchanged.
  • Migrate IndexNode parameters to DataNode parameters.

Milvus

• Merge IndexNode and DataNode.

Helm

• Update Helm to exclude IndexNode support.

Operator

• Update Operator configurations to exclude IndexNode support.

Why is this needed?

No response

Anything else?

No response