[jira] [Commented] (IGNITE-12131) MMAP mode should be disabled by default for WAL manager
[ https://issues.apache.org/jira/browse/IGNITE-12131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16920777#comment-16920777 ] Ilya Kasnacheev commented on IGNITE-12131: -- To the contrary, I think this is not just implementation detail, but a setting relevant to performance tuning and/or functionality. As such, it should be accessible. In my opinion, if we ever have both 'mmap' and 'no mmap', we should introduce a configuration setting. If we drop either one, it's not needed :) > MMAP mode should be disabled by default for WAL manager > --- > > Key: IGNITE-12131 > URL: https://issues.apache.org/jira/browse/IGNITE-12131 > Project: Ignite > Issue Type: Improvement >Reporter: Andrey Gura >Assignee: Andrey Gura >Priority: Major > Fix For: 2.8 > > > MMAP mode has a bunch of problems (see for example > http://www.mapdb.org/blog/mmap_files_alloc_and_jvm_crash/ ) > Users are increasingly stumbling over these issues especially in virtualized > environments. > MMAP should be disabled by default because it requires additional care from > user stand point. -- This message was sent by Atlassian Jira (v8.3.2#803003)
[jira] [Commented] (IGNITE-12131) MMAP mode should be disabled by default for WAL manager
[ https://issues.apache.org/jira/browse/IGNITE-12131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16919683#comment-16919683 ] Andrey Gura commented on IGNITE-12131: -- [~ilyak] In my opinion, mmap is just implementation detail, so it isn't good idea to expose it on public configuration API. There are ideas about WAL refactoring that can lead to creation of different implementations. > MMAP mode should be disabled by default for WAL manager > --- > > Key: IGNITE-12131 > URL: https://issues.apache.org/jira/browse/IGNITE-12131 > Project: Ignite > Issue Type: Improvement >Reporter: Andrey Gura >Assignee: Andrey Gura >Priority: Major > Fix For: 2.8 > > > MMAP mode has a bunch of problems (see for example > http://www.mapdb.org/blog/mmap_files_alloc_and_jvm_crash/ ) > Users are increasingly stumbling over these issues especially in virtualized > environments. > MMAP should be disabled by default because it requires additional care from > user stand point. -- This message was sent by Atlassian Jira (v8.3.2#803003)
[jira] [Commented] (IGNITE-12131) MMAP mode should be disabled by default for WAL manager
[ https://issues.apache.org/jira/browse/IGNITE-12131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16919593#comment-16919593 ] Ilya Kasnacheev commented on IGNITE-12131: -- Can we please have a boolean property 'walMmap' on DataStorageConfiguration instead of IGNITE_ARCANE_INVOCATION variables? > MMAP mode should be disabled by default for WAL manager > --- > > Key: IGNITE-12131 > URL: https://issues.apache.org/jira/browse/IGNITE-12131 > Project: Ignite > Issue Type: Improvement >Reporter: Andrey Gura >Assignee: Andrey Gura >Priority: Major > Fix For: 2.8 > > > MMAP mode has a bunch of problems (see for example > http://www.mapdb.org/blog/mmap_files_alloc_and_jvm_crash/ ) > Users are increasingly stumbling over these issues especially in virtualized > environments. > MMAP should be disabled by default because it requires additional care from > user stand point. -- This message was sent by Atlassian Jira (v8.3.2#803003)
