Property MaxChunkSize

Gets or sets the maximum chunk size (default is for 64 bit JVMs and 256 MiBytes for 32 bit JVMs) used for memory mapping. Especially on 32 bit platform, the address space can be very fragmented, so large index files cannot be mapped. Using a lower chunk size makes the directory implementation a little bit slower (as the correct chunk must be resolved on each seek) but the chance is higher that mmap does not fail. On 64 bit Java platforms, this parameter should always be , as the adress space is big enough.