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Robot Operating System (ROS)
on Hadoop
Working with large Rosbag files on HDFS
Working with large Rosbag files
One PC/NAS can have a hard
time with large Rosbag files
Hadoop provides distributed
storage and parallel processing
Hadoop InputFormat allows to
process Rosbag files via Hadoop
interfaces:
https://github.com/valtech/ros_hadoop
2
Hadoop InputFormat for ROS
Benefits
+ Analyse ROS data with 3rd-party tools like Spark via Hadoop
interface
+ Run parallel jobs on ROS data in Hadoop with MapReduce
+ Save time because data conversion not needed
+ Save storage because data duplication not needed
3
Search & Analysis
+ Hadoop InputFormat and
Record Reader for Rosbag
+ Process Rosbag with Spark,
Yarn, MapReduce, Hadoop
Streaming API, …
+ Spark RDD are cached and
optimized for analysis
Large
Rosbag
Processing
Engine
Computer
Network
Storage
Advanced
Analytics
RDD
Record
Reader
RDD
DataFrame, DataSet
SQL, Spark APIs
NumPy
Ros
Msg
Training & Evaluation
+ TensorFlow Record Reader
+ Protocol Buffers to serialize
records
+ Save time because data
conversion not needed
+ Save storage because data
duplication not needed
Training
Engine
Machine
Learning
Computer
Network
Storage
Record
Reader
Ros
msg
Large
Rosbag
Re-Simulation & Testing
+ Use Spark for preprocessing,
transformation, cleansing,
aggregation, time window
selection before publish to ROS
topics
+ Use Re-Simulation framework
of choice to subscribe to the
ROS topics
Engine
Re-Simulation
with framework
of choice
Computer
Network
Storage
Ros
topic
core
subscribe
publish
Large
Rosbag
Time Travel
fold(left)
t
fold(right)
reduce/
shuffle
Demo: To test locally use the Dockerfile
1.
> git clone https://github.com/valtech/ros_hadoop
2.
> docker build -t ros_hadoop:latest -f Dockerfile .
3.
> docker run -it -v $(pwd):/root/ros_hadoop -p
8888:8888 ros_hadoop
+ HDFS 2.8.0
+ Spark on Yarn 2.2.0
+ ROS core Kinetic Kame
+ Tensorflow 1.0.1
+ Keras 2.0.3
+ Python 2.7.12 depends on
ROS, Scala 2.11, Java 1.8
Hadoop InputFormat for ROS
Apache License 2.0
Download
https://github.com/valtech/ros_hadoop
thank you
Jan Wiegelmann
+49 (0)151/14 26 56 44
jan.wiegelmann@valtech.de

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Robot Operating Systen (ROS) on Hadoop (HDFS)

  • 1. 1 Robot Operating System (ROS) on Hadoop Working with large Rosbag files on HDFS
  • 2. Working with large Rosbag files One PC/NAS can have a hard time with large Rosbag files Hadoop provides distributed storage and parallel processing Hadoop InputFormat allows to process Rosbag files via Hadoop interfaces: https://github.com/valtech/ros_hadoop 2
  • 3. Hadoop InputFormat for ROS Benefits + Analyse ROS data with 3rd-party tools like Spark via Hadoop interface + Run parallel jobs on ROS data in Hadoop with MapReduce + Save time because data conversion not needed + Save storage because data duplication not needed 3
  • 4. Search & Analysis + Hadoop InputFormat and Record Reader for Rosbag + Process Rosbag with Spark, Yarn, MapReduce, Hadoop Streaming API, … + Spark RDD are cached and optimized for analysis Large Rosbag Processing Engine Computer Network Storage Advanced Analytics RDD Record Reader RDD DataFrame, DataSet SQL, Spark APIs NumPy Ros Msg
  • 5. Training & Evaluation + TensorFlow Record Reader + Protocol Buffers to serialize records + Save time because data conversion not needed + Save storage because data duplication not needed Training Engine Machine Learning Computer Network Storage Record Reader Ros msg Large Rosbag
  • 6. Re-Simulation & Testing + Use Spark for preprocessing, transformation, cleansing, aggregation, time window selection before publish to ROS topics + Use Re-Simulation framework of choice to subscribe to the ROS topics Engine Re-Simulation with framework of choice Computer Network Storage Ros topic core subscribe publish Large Rosbag
  • 8. Demo: To test locally use the Dockerfile 1. > git clone https://github.com/valtech/ros_hadoop 2. > docker build -t ros_hadoop:latest -f Dockerfile . 3. > docker run -it -v $(pwd):/root/ros_hadoop -p 8888:8888 ros_hadoop + HDFS 2.8.0 + Spark on Yarn 2.2.0 + ROS core Kinetic Kame + Tensorflow 1.0.1 + Keras 2.0.3 + Python 2.7.12 depends on ROS, Scala 2.11, Java 1.8
  • 9. Hadoop InputFormat for ROS Apache License 2.0 Download https://github.com/valtech/ros_hadoop
  • 10. thank you Jan Wiegelmann +49 (0)151/14 26 56 44 jan.wiegelmann@valtech.de