[jira] [Updated] (CALCITE-2204) Volcano Planner may not choose the cheapest cost plan
[ https://issues.apache.org/jira/browse/CALCITE-2204?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Kevin Risden updated CALCITE-2204: -- Labels: pull-request-available (was: ) > Volcano Planner may not choose the cheapest cost plan > -- > > Key: CALCITE-2204 > URL: https://issues.apache.org/jira/browse/CALCITE-2204 > Project: Calcite > Issue Type: Bug >Reporter: LeoWangLZ >Priority: Major > Labels: pull-request-available > > Volcano Planner will propagate the cost improvement to parents that one of > the inputs has the best plan. But it not propagate to all parents firstly, it > propagate one parent and go to the parents of parent. In the way, if one > parent may propagate to other parent on the same level, and the cost maybe > less than others, but when propagate the parent again, it will not propagate > because the cost is already calculated, and it's can't be less then the cost > of the self. -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Updated] (CALCITE-2204) Volcano Planner may not choose the cheapest cost plan
[ https://issues.apache.org/jira/browse/CALCITE-2204?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] LeoWangLZ updated CALCITE-2204: --- Description: Volcano Planner will propagate the cost improvement to parents that one of the inputs has the best plan. But it not propagate to all parents firstly, it propagate one parent and go to the parents of parent. In the way, if one parent may propagate to other parent on the same level, and the cost maybe less than others, but when propagate the parent again, it will not propagate because the cost is already calculated, and it's can't be less then the cost of the self. (was: Volcano Planner will propagate the cost improvement to parents that one of the inputs has the best plan. But it not propagate to all parents firstly, it propagate one parent and go to the parent s of parent. In the way, if one parent may propagate to other parent on the same level, and the cost maybe less than others, but when propagate the parent again, it will not propagate because the cost is already calculated, and it's can't be less then the cost of the self.) > Volcano Planner may not choose the cheapest cost plan > -- > > Key: CALCITE-2204 > URL: https://issues.apache.org/jira/browse/CALCITE-2204 > Project: Calcite > Issue Type: Bug >Reporter: LeoWangLZ >Assignee: Julian Hyde >Priority: Major > > Volcano Planner will propagate the cost improvement to parents that one of > the inputs has the best plan. But it not propagate to all parents firstly, it > propagate one parent and go to the parents of parent. In the way, if one > parent may propagate to other parent on the same level, and the cost maybe > less than others, but when propagate the parent again, it will not propagate > because the cost is already calculated, and it's can't be less then the cost > of the self. -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Updated] (CALCITE-2204) Volcano Planner may not choose the cheapest cost plan
[ https://issues.apache.org/jira/browse/CALCITE-2204?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] LeoWangLZ updated CALCITE-2204: --- Summary: Volcano Planner may not choose the cheapest cost plan (was: Volcano Planner may not choose the cheapest cost plan wrongly) > Volcano Planner may not choose the cheapest cost plan > -- > > Key: CALCITE-2204 > URL: https://issues.apache.org/jira/browse/CALCITE-2204 > Project: Calcite > Issue Type: Bug >Reporter: LeoWangLZ >Assignee: Julian Hyde >Priority: Major > > Volcano Planner will propagate the cost improvement to parents that one of > the inputs has the best plan. But it not propagate to all parents firstly, it > propagate one parent and go to the parent s of parent. In the way, if one > parent may propagate to other parent on the same level, and the cost maybe > less than others, but when propagate the parent again, it will not propagate > because the cost is already calculated, and it's can't be less then the cost > of the self. -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Updated] (CALCITE-2204) Volcano Planner may not choose the cheapest cost plan wrongly
[ https://issues.apache.org/jira/browse/CALCITE-2204?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] LeoWangLZ updated CALCITE-2204: --- Summary: Volcano Planner may not choose the cheapest cost plan wrongly (was: Volcano Planner may not choose the cheapest cost of plan wrongly) > Volcano Planner may not choose the cheapest cost plan wrongly > - > > Key: CALCITE-2204 > URL: https://issues.apache.org/jira/browse/CALCITE-2204 > Project: Calcite > Issue Type: Bug >Reporter: LeoWangLZ >Assignee: Julian Hyde >Priority: Major > > Volcano Planner will propagate the cost improvement to parents that one of > the inputs has the best plan. But it not propagate to all parents firstly, it > propagate one parent and go to the parent s of parent. In the way, if one > parent may propagate to other parent on the same level, and the cost maybe > less than others, but when propagate the parent again, it will not propagate > because the cost is already calculated, and it's can't be less then the cost > of the self. -- This message was sent by Atlassian JIRA (v7.6.3#76005)
