[jira] [Updated] (CASSANDRA-13664) RangeFetchMapCalculator should not try to optimise 'trivial' ranges
[ https://issues.apache.org/jira/browse/CASSANDRA-13664?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Marcus Eriksson updated CASSANDRA-13664: Resolution: Fixed Fix Version/s: (was: 4.x) 4.0 Status: Resolved (was: Ready to Commit) Committed > RangeFetchMapCalculator should not try to optimise 'trivial' ranges > --- > > Key: CASSANDRA-13664 > URL: https://issues.apache.org/jira/browse/CASSANDRA-13664 > Project: Cassandra > Issue Type: Bug >Reporter: Marcus Eriksson >Assignee: Marcus Eriksson > Fix For: 4.0 > > Attachments: Screen Shot 2017-08-14 at 14.22.23.png > > > RangeFetchMapCalculator (CASSANDRA-4650) tries to make the number of streams > out of each node as even as possible. > In a typical multi-dc ring the nodes in the dcs are setup using token + 1, > creating many tiny ranges. If we only try to optimise over the number of > streams, it is likely that the amount of data streamed out of each node is > unbalanced. > We should ignore those trivial ranges and only optimise the big ones, then > share the tiny ones over the nodes. -- This message was sent by Atlassian JIRA (v6.4.14#64029) - To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org
[jira] [Updated] (CASSANDRA-13664) RangeFetchMapCalculator should not try to optimise 'trivial' ranges
[ https://issues.apache.org/jira/browse/CASSANDRA-13664?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Marcus Eriksson updated CASSANDRA-13664: Attachment: Screen Shot 2017-08-14 at 14.22.23.png > RangeFetchMapCalculator should not try to optimise 'trivial' ranges > --- > > Key: CASSANDRA-13664 > URL: https://issues.apache.org/jira/browse/CASSANDRA-13664 > Project: Cassandra > Issue Type: Bug >Reporter: Marcus Eriksson >Assignee: Marcus Eriksson > Fix For: 4.x > > Attachments: Screen Shot 2017-08-14 at 14.22.23.png > > > RangeFetchMapCalculator (CASSANDRA-4650) tries to make the number of streams > out of each node as even as possible. > In a typical multi-dc ring the nodes in the dcs are setup using token + 1, > creating many tiny ranges. If we only try to optimise over the number of > streams, it is likely that the amount of data streamed out of each node is > unbalanced. > We should ignore those trivial ranges and only optimise the big ones, then > share the tiny ones over the nodes. -- This message was sent by Atlassian JIRA (v6.4.14#64029) - To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org
[jira] [Updated] (CASSANDRA-13664) RangeFetchMapCalculator should not try to optimise 'trivial' ranges
[ https://issues.apache.org/jira/browse/CASSANDRA-13664?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Ariel Weisberg updated CASSANDRA-13664: --- Status: Ready to Commit (was: Patch Available) > RangeFetchMapCalculator should not try to optimise 'trivial' ranges > --- > > Key: CASSANDRA-13664 > URL: https://issues.apache.org/jira/browse/CASSANDRA-13664 > Project: Cassandra > Issue Type: Bug >Reporter: Marcus Eriksson >Assignee: Marcus Eriksson > Fix For: 4.x > > > RangeFetchMapCalculator (CASSANDRA-4650) tries to make the number of streams > out of each node as even as possible. > In a typical multi-dc ring the nodes in the dcs are setup using token + 1, > creating many tiny ranges. If we only try to optimise over the number of > streams, it is likely that the amount of data streamed out of each node is > unbalanced. > We should ignore those trivial ranges and only optimise the big ones, then > share the tiny ones over the nodes. -- This message was sent by Atlassian JIRA (v6.4.14#64029) - To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org
[jira] [Updated] (CASSANDRA-13664) RangeFetchMapCalculator should not try to optimise 'trivial' ranges
[ https://issues.apache.org/jira/browse/CASSANDRA-13664?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Ariel Weisberg updated CASSANDRA-13664: --- Reviewer: Ariel Weisberg > RangeFetchMapCalculator should not try to optimise 'trivial' ranges > --- > > Key: CASSANDRA-13664 > URL: https://issues.apache.org/jira/browse/CASSANDRA-13664 > Project: Cassandra > Issue Type: Bug >Reporter: Marcus Eriksson >Assignee: Marcus Eriksson > Fix For: 4.x > > > RangeFetchMapCalculator (CASSANDRA-4650) tries to make the number of streams > out of each node as even as possible. > In a typical multi-dc ring the nodes in the dcs are setup using token + 1, > creating many tiny ranges. If we only try to optimise over the number of > streams, it is likely that the amount of data streamed out of each node is > unbalanced. > We should ignore those trivial ranges and only optimise the big ones, then > share the tiny ones over the nodes. -- This message was sent by Atlassian JIRA (v6.4.14#64029) - To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org
[jira] [Updated] (CASSANDRA-13664) RangeFetchMapCalculator should not try to optimise 'trivial' ranges
[ https://issues.apache.org/jira/browse/CASSANDRA-13664?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Marcus Eriksson updated CASSANDRA-13664: Status: Patch Available (was: Open) https://github.com/krummas/cassandra/commits/marcuse/opt_large simply filters out ranges considered trivial (less than 1000 tokens for RP and M3P, no trivial ranges for BOP etc), then re-adds them once the optimisation is done. > RangeFetchMapCalculator should not try to optimise 'trivial' ranges > --- > > Key: CASSANDRA-13664 > URL: https://issues.apache.org/jira/browse/CASSANDRA-13664 > Project: Cassandra > Issue Type: Bug >Reporter: Marcus Eriksson >Assignee: Marcus Eriksson > Fix For: 4.x > > > RangeFetchMapCalculator (CASSANDRA-4650) tries to make the number of streams > out of each node as even as possible. > In a typical multi-dc ring the nodes in the dcs are setup using token + 1, > creating many tiny ranges. If we only try to optimise over the number of > streams, it is likely that the amount of data streamed out of each node is > unbalanced. > We should ignore those trivial ranges and only optimise the big ones, then > share the tiny ones over the nodes. -- This message was sent by Atlassian JIRA (v6.4.14#64029) - To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org
