openbraininstitute / libsonata / 23850061638

Pull #38

github

Don't use HDF5's default locking behavior when opening files read only

* HDF5 uses file locks to implement a `Single Writer, Multiple Reader` model
* We expect the SONATA HDF5 files to always be finished reading, so we
  don't benefit from this, and on some files systems, there are a finite
  amount of locks (plus it's a pessimizing default)
* we don't want to rely on `HDF5_USE_FILE_LOCKING` to be set
* see more info: https://support.hdfgroup.org/documentation/hdf5/latest/_file_lock.html

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