[jira] [Comment Edited] (IGNITE-7698) Page read during replacement should be outside of segment write lock
[ https://issues.apache.org/jira/browse/IGNITE-7698?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16373169#comment-16373169 ] Dmitriy Pavlov edited comment on IGNITE-7698 at 2/22/18 5:55 PM: - *Note:* To backport issue it is required to cherrypick 2 commits: master (commit 1761a3c66dfa42fffa35e5cc736e2420e22851b8) master (commit 7288828c595d5f6b9b59eae4d2c54d16d9770833) was (Author: dpavlov): *Note: * To backport issue it is required to cherrypick 2 commits: master (commit 1761a3c66dfa42fffa35e5cc736e2420e22851b8) master (commit 7288828c595d5f6b9b59eae4d2c54d16d9770833) > Page read during replacement should be outside of segment write lock > > > Key: IGNITE-7698 > URL: https://issues.apache.org/jira/browse/IGNITE-7698 > Project: Ignite > Issue Type: Improvement > Components: persistence >Affects Versions: 2.1 >Reporter: Alexey Goncharuk >Assignee: Dmitriy Pavlov >Priority: Major > Fix For: 2.5 > > > When a page is acquired, if it needs to be read from disk, we read it inside > the segment write lock which blocks other threads from acquiring pages that > are already in memory. > This can be easily avoided: once we initialized the page's being loaded RW > lock, we can immediately acquire the write lock - no deadlocks can happen > here. Afterwards, we can release the segment write lock and read the page. > The change seems to be very local. -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Comment Edited] (IGNITE-7698) Page read during replacement should be outside of segment write lock
[ https://issues.apache.org/jira/browse/IGNITE-7698?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16372546#comment-16372546 ] Alexey Goncharuk edited comment on IGNITE-7698 at 2/22/18 5:51 PM: --- Thanks, Dmitriy, merged your changes to master (commit 1761a3c66dfa42fffa35e5cc736e2420e22851b8) was (Author: agoncharuk): Thanks, Dmitriy, merged your changes to master > Page read during replacement should be outside of segment write lock > > > Key: IGNITE-7698 > URL: https://issues.apache.org/jira/browse/IGNITE-7698 > Project: Ignite > Issue Type: Improvement > Components: persistence >Affects Versions: 2.1 >Reporter: Alexey Goncharuk >Assignee: Dmitriy Pavlov >Priority: Major > Fix For: 2.5 > > > When a page is acquired, if it needs to be read from disk, we read it inside > the segment write lock which blocks other threads from acquiring pages that > are already in memory. > This can be easily avoided: once we initialized the page's being loaded RW > lock, we can immediately acquire the write lock - no deadlocks can happen > here. Afterwards, we can release the segment write lock and read the page. > The change seems to be very local. -- This message was sent by Atlassian JIRA (v7.6.3#76005)
