The ROOT I/O workshop was held on June 20th at CERN. A few things of interest in MIDAS land:
- LZ4 is now used as default compression (replacing gzip-1)
- JSON class streamer is finally implemented (XML streamer updated/reworked)
- recursive read-write lock class implemented
Of these the recursive read-write lock is most interesting - using something similar would improve ODB performance
and presumably fix the existing lock fairness problems.