quality/reports/initial_import_report.md

Initial Import Report

Date: 2026-05-15

Summary

• Source directory: dataset/bags
• Imported session directory: raw/sessions
• Import mode: hardlink
• Source bags found: 17
• Sessions imported: 17
• Source data size: 76G
• Imported raw session apparent data size: 76G
• Extra disk used by raw session bags before Git LFS object storage: near zero, because bag.bag files are hardlinks to preserved source bags
• Original source bags preserved: yes
• Git LFS configured: yes
• metadata/sessions.parquet rows: 17
• metadata/topics.parquet rows: 0

Session Import Status

All matching files named odom_dataset_YYYYMMDD_HHMMSS.bag from dataset/bags were imported into raw/sessions/<session_id>/ using hardlinks.

Each session has:

• bag.bag
• bag.bag.sha256
• metadata.yaml

Topic Scan Status

Topic scanning is blocked in the current shell because the ROS rosbag Python package is not available.

Observed error:

Failed to import rosbag. Please source your ROS environment first, for example:
source /opt/ros/noetic/setup.bash

No fake topic_summary.yaml files were generated. That is intentional. A missing scan is better than false metadata.

Next Required Step

Use a ROS environment, then run:

source /opt/ros/noetic/setup.bash
conda activate odom_dataset
make scan-all
make build-index
make validate
git add .
git commit -m "scan rosbag topics"