GitHub user Xiao-zhen-Liu added a comment to the discussion: Task ideas for the
dkNet-AI · Apache Texera Agent Hackathon
# AI-Augmented Macro Operators for Texera
## Problem
Texera workflows grow into 20–50+ operator DAGs with no encapsulation. Users
copy-paste the same subgraphs across projects, and pipelines run slower than
they need to because of inter-operator serialization.
## What we'll build
- **Macro operators** — collapse a selection of operators into one reusable,
version-pinned node (KNIME wrapped-metanode style). Drill-down to edit; drag
from a library to reuse.
- **Agent tool: `suggestMacros`** — the agent inspects the `LogicalPlan` and
proposes ranked subgraphs to encapsulate, each with a one-line rationale
("looks like a reusable text-preprocessing block"). Highlights candidates on
the canvas; one click materializes.
- **Agent tool: `fuseMacro`** — for a macro whose internals the user no longer
needs to inspect, the agent synthesizes an equivalent `PythonUDFOpDescV2`, runs
original and fused on a sample, diffs outputs, and only swaps in after
verification passes.
## Why it fits the Agent Hackathon
- Plugs straight into the existing `agent-service` (Vercel AI SDK + ReAct loop
+ tool framework). Two new tools, no new LLM plumbing.
- The agent doesn't just suggest — it **verifies** (sample-run diff for fusion)
and rolls back on mismatch. Concrete, measurable correctness.
- Showcases capabilities a generic chatbot can't: structural reasoning over a
DAG, codegen for a known runtime, and a built-in verification harness.
## Demo (~3 min)
1. Open a 15-operator workflow → "Suggest Macros (AI)" → three highlighted
candidates appear with rationales.
2. Accept one → subgraph collapses into a single macro node.
3. Run → note baseline time.
4. Right-click macro → "Fuse for performance" → agent generates UDF, verifies
("matched on 1000 sample rows"), swaps in.
5. Re-run → show **2–5× speedup** on the stateless chain.
## Stretch
- Cross-workflow pattern mining: "you've built this subgraph 4 times — save as
a macro?"
- Auto-publish recurring patterns to the workflow hub as community macros.
GitHub link:
https://github.com/apache/texera/discussions/5059#discussioncomment-16924132
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