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Posted to issues@beam.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2019/08/01 18:16:00 UTC
[jira] [Work logged] (BEAM-7777) Stream Cost Model and RelNode Cost
Estimation
[ https://issues.apache.org/jira/browse/BEAM-7777?focusedWorklogId=286915&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-286915 ]
ASF GitHub Bot logged work on BEAM-7777:
----------------------------------------
Author: ASF GitHub Bot
Created on: 01/Aug/19 18:15
Start Date: 01/Aug/19 18:15
Worklog Time Spent: 10m
Work Description: riazela commented on pull request #9217: [BEAM-7777] Beam cost model
URL: https://github.com/apache/beam/pull/9217
Please do not merge this before merging PR 9185 and PR 9198.
This PR has two commits in addition to PR 9185 and PR 9198. The first one implements BeamCostModel and wires this cost model to the planner in BeamSQLTransform path. It also adds beamComputeSelfCost method for all the classes, and tests that the CalciteQueryPlanner is using our cost model and the cost model behaves as expected.
The second PR makes implements beamComputeSelfCost for all the nodes. All of them are simple methods using NodeStats estimations of the node and its inputs.
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Issue Time Tracking
-------------------
Worklog Id: (was: 286915)
Time Spent: 10m
Remaining Estimate: 0h
> Stream Cost Model and RelNode Cost Estimation
> ---------------------------------------------
>
> Key: BEAM-7777
> URL: https://issues.apache.org/jira/browse/BEAM-7777
> Project: Beam
> Issue Type: New Feature
> Components: dsl-sql
> Reporter: Alireza Samadianzakaria
> Assignee: Alireza Samadianzakaria
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Currently the cost model is not suitable for streaming jobs. (it uses row count and for estimating the output row count of each node it is using calcite estimations that are only applicable to bounded data.)
> We need to implement a new cost model and implement cost estimation for all of our physical nodes.
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