[jira] [Updated] (HIVE-15652) Optimize(reduce) the number of alter calls made to fix repl.last.id
[ https://issues.apache.org/jira/browse/HIVE-15652?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Sushanth Sowmyan updated HIVE-15652: Status: Patch Available (was: Open) > Optimize(reduce) the number of alter calls made to fix repl.last.id > --- > > Key: HIVE-15652 > URL: https://issues.apache.org/jira/browse/HIVE-15652 > Project: Hive > Issue Type: Bug >Reporter: Sushanth Sowmyan >Assignee: Sushanth Sowmyan > Attachments: HIVE-15652.patch > > > Per code review from HIVE-15534, we might be doing alters to parent objects > to set repl.last.id when it is not necessary, since some future event might > make this alter redundant. > There are 3 cases where this might happen: > a) After a CREATE_TABLE event - any prior reference to that table does not > need an ALTER, since CREATE_TABLE will have a repl.last.id come with it. > b) After a DROP_TABLE event - any prior reference to that table is > irrelevant, and thus, no alter is needed. > c) After an ALTER_TABLE event, since that dump will itself do a metadata > update that will get the latest repl.last.id along with this event. > In each of these cases, we can remove the alter call needed. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HIVE-15652) Optimize(reduce) the number of alter calls made to fix repl.last.id
[ https://issues.apache.org/jira/browse/HIVE-15652?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Sushanth Sowmyan updated HIVE-15652: Issue Type: Sub-task (was: Bug) Parent: HIVE-14841 > Optimize(reduce) the number of alter calls made to fix repl.last.id > --- > > Key: HIVE-15652 > URL: https://issues.apache.org/jira/browse/HIVE-15652 > Project: Hive > Issue Type: Sub-task >Reporter: Sushanth Sowmyan >Assignee: Sushanth Sowmyan > Attachments: HIVE-15652.patch > > > Per code review from HIVE-15534, we might be doing alters to parent objects > to set repl.last.id when it is not necessary, since some future event might > make this alter redundant. > There are 3 cases where this might happen: > a) After a CREATE_TABLE event - any prior reference to that table does not > need an ALTER, since CREATE_TABLE will have a repl.last.id come with it. > b) After a DROP_TABLE event - any prior reference to that table is > irrelevant, and thus, no alter is needed. > c) After an ALTER_TABLE event, since that dump will itself do a metadata > update that will get the latest repl.last.id along with this event. > In each of these cases, we can remove the alter call needed. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (HIVE-15652) Optimize(reduce) the number of alter calls made to fix repl.last.id
[ https://issues.apache.org/jira/browse/HIVE-15652?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Sushanth Sowmyan updated HIVE-15652: Attachment: HIVE-15652.patch Patch attached, this changes the total number of Alters to update repl.last.id across TestReplicationScenarios from 60 to 44. > Optimize(reduce) the number of alter calls made to fix repl.last.id > --- > > Key: HIVE-15652 > URL: https://issues.apache.org/jira/browse/HIVE-15652 > Project: Hive > Issue Type: Bug >Reporter: Sushanth Sowmyan >Assignee: Sushanth Sowmyan > Attachments: HIVE-15652.patch > > > Per code review from HIVE-15534, we might be doing alters to parent objects > to set repl.last.id when it is not necessary, since some future event might > make this alter redundant. > There are 3 cases where this might happen: > a) After a CREATE_TABLE event - any prior reference to that table does not > need an ALTER, since CREATE_TABLE will have a repl.last.id come with it. > b) After a DROP_TABLE event - any prior reference to that table is > irrelevant, and thus, no alter is needed. > c) After an ALTER_TABLE event, since that dump will itself do a metadata > update that will get the latest repl.last.id along with this event. > In each of these cases, we can remove the alter call needed. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
