Yes, if the fletcher32 filter is used, it is always verified during reads. I never experienced a failure myself, but a look at the code:
http://www.hdfgroup.org/ftp/HDF5/releases/hdf5-1.8.1/src/unpacked/src/H5Zfletcher32.c is enough to see that this is the case. Francesc On 2/27/13 9:35 PM, Anthony Scopatz wrote: > Sorry, I don't know. I never have used this feature. Maybe someone > who has can chime in. > > > On Wed, Feb 27, 2013 at 2:26 PM, Frédéric Bastien <no...@nouiz.org > <mailto:no...@nouiz.org>> wrote: > > That is fine with me. I just want to detect if my data got corrupted > by hardware problems. > > Do someone know if it always get verified? Do you know if this cause > significant speed difference? > > thanks > > Frédéric > > On Wed, Feb 27, 2013 at 3:21 PM, Anthony Scopatz > <scop...@gmail.com <mailto:scop...@gmail.com>> wrote: > > I think that the checksum is on the compressed data... > > > > > > On Wed, Feb 27, 2013 at 2:16 PM, Frédéric Bastien > <no...@nouiz.org <mailto:no...@nouiz.org>> wrote: > >> > >> Hi, > >> > >> we just got some problem with our file server and this bring me > >> question on how to detect corrupted files. > >> > >> There is a way to specify a filter when creating a table that add a > >> checksum[1]. > >> > >> My questions is, when a file is created with checksum, are they > always > >> verified when the chunks are uncompressed? Can we specify when > we open > >> the file if we want to check it or not? The examples I found > only talk > >> about it when we create the file. > >> > >> thanks > >> > >> Frédéric Bastien > >> > >> > >> [1] > http://pytables.github.com/usersguide/libref/helper_classes.html > >> > >> > >> > > ------------------------------------------------------------------------------ > >> Everyone hates slow websites. So do we. > >> Make your web apps faster with AppDynamics > >> Download AppDynamics Lite for free today: > >> http://p.sf.net/sfu/appdyn_d2d_feb > >> _______________________________________________ > >> Pytables-users mailing list > >> Pytables-users@lists.sourceforge.net > <mailto:Pytables-users@lists.sourceforge.net> > >> https://lists.sourceforge.net/lists/listinfo/pytables-users > > > > > > > > > > ------------------------------------------------------------------------------ > > Everyone hates slow websites. So do we. > > Make your web apps faster with AppDynamics > > Download AppDynamics Lite for free today: > > http://p.sf.net/sfu/appdyn_d2d_feb > > _______________________________________________ > > Pytables-users mailing list > > Pytables-users@lists.sourceforge.net > <mailto:Pytables-users@lists.sourceforge.net> > > https://lists.sourceforge.net/lists/listinfo/pytables-users > > > > > ------------------------------------------------------------------------------ > Everyone hates slow websites. So do we. > Make your web apps faster with AppDynamics > Download AppDynamics Lite for free today: > http://p.sf.net/sfu/appdyn_d2d_feb > _______________________________________________ > Pytables-users mailing list > Pytables-users@lists.sourceforge.net > <mailto:Pytables-users@lists.sourceforge.net> > https://lists.sourceforge.net/lists/listinfo/pytables-users > > > > > ------------------------------------------------------------------------------ > Everyone hates slow websites. So do we. > Make your web apps faster with AppDynamics > Download AppDynamics Lite for free today: > http://p.sf.net/sfu/appdyn_d2d_feb > > > _______________________________________________ > Pytables-users mailing list > Pytables-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/pytables-users -- Francesc Alted ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb _______________________________________________ Pytables-users mailing list Pytables-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pytables-users
