goutamadwant commented on issue #12268:
URL: https://github.com/apache/seatunnel/issues/12268#issuecomment-6402743128

   @SEZ9 thanks. Updated the body:
   
   - Dev list: D7–D9 posted to the same thread: 
https://lists.apache.org/thread/xff62okc0ncnrz1n3tp0gxbyk8sz7rkw
   - D1: the row now points to D7–D9 for column lineage.
   - D7: `level=column` adds no error codes. D4 applies to the job as before; 
unknown column data is a `200` with `columnMetadata: NOT_CAPTURED` or per-table 
`UNKNOWN` (section 7, Limits).
   - D8: its own open row, listing the four transforms and the `UNKNOWN` 
fallback; no transform code before dev@ confirms it.
   - D9: column data counts against the 8 MiB limit (413, whole response). Over 
the column cap, the table graph is still returned (`200`, `NOT_CAPTURED`).
   
   Measured on a local prototype (source → `Filter` → sink, 50 columns per 
table):
   
   | Job size | Extra time at job start | Stored snapshot | Table-level 
response | Column response (whole job) | Column response (`table=`) |
   |---|---|---|---|---|---|
   | 10 tables × 20 columns | < 1 ms | 2 KB → 9 KB | 0.9 KB | 17 KB | 2.5 KB |
   | 100 tables | ~10 ms | 6 KB → 144 KB | 3 KB | 392 KB | 7 KB |
   | 1,000 tables | ~46 ms | 43 KB → 1.4 MB (0.33 MB gzip) | 30 KB | 3.9 MB | 
34 KB |
   | 2,000 tables | ~42 ms | 85 KB → 2.8 MB (0.66 MB gzip) | 62 KB | 7.8 MB | 
66 KB |
   
   D3 (eager snapshot after `JobMaster` init) is still the item Phase 2 needs 
from you.


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