ignite-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Dmitry Pavlov <dpavlov....@gmail.com>
Subject Re: Is WAL a memory-mapped file?
Date Wed, 01 Nov 2017 17:58:42 GMT
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

Dmitriy Pavlov

ср, 1 нояб. 2017 г. в 20:36, John Wilson <sami.hailu.15@gmail.com>:

> Hi,
> Is the WAL a memory mapped file? Is it defined per cache?
> Thanks.

View raw message