With the WALMode = DEFAULT, which does a full-sync disk write, individual put operations on a cache are written to disk then. That would make it slow, right?
Thanks. On Wed, Nov 1, 2017 at 10:58 AM, Dmitry Pavlov <dpavlov....@gmail.com> wrote: > Hi John, > > No, WAL consists from several constant sized, append only files > (segments). > Segments are rotated and deleted after (WAL_History_size) checkpoints. > WAL is common for all caches. > > If you are interested in low-level details of implementation, you can see > it here in draft wiki page for Ignite developers https://cwiki. > apache.org/confluence/display/IGNITE/Ignite+Persistent+ > Store+-+under+the+hood#IgnitePersistentStore-underthehood-WALstructure > > Sincerely, > Dmitriy Pavlov > > ср, 1 нояб. 2017 г. в 20:36, John Wilson <sami.hailu...@gmail.com>: > >> Hi, >> >> Is the WAL a memory mapped file? Is it defined per cache? >> >> Thanks. >> >
