cug-structure

h5spark motivation
0. spark in HPC
1. scientific data formats, (hdf5, netcdf) in spark
2. scientific application, pca, climate


h5spark design and optimization
0. design condideration, bighdf5-faq
1. h5spark read/write interface
2. h5spark HD array representation
3. h5spark metadata
4. h5spark zero-copy

h5spark function evaluation
0. h5spark multiple hdf5 vs single hdf5 file 
1. h5spark unbalanced multiple hdf5 vs balanced multiple hdf5 
2. h5spark python vs scala

h5spark versus other io api
0. h5spark vs parquet-spark
1. h5spark vs mpiio
2. h5spark vs h5py
3. h5spark vs scispark

h5spark hands on programming issues
0. scala string trim spaces
1. sbt memory issue 
2. executor memory issue
3. dset_dims long to int