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https://issues.apache.org/jira/browse/PHOENIX-1851?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Maryann Xue updated PHOENIX-1851:
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Labels: calcite (was: )
> Implement PhoenixRelMetadataProvider in Phoenix/Calcite Integration
> -------------------------------------------------------------------
>
> Key: PHOENIX-1851
> URL: https://issues.apache.org/jira/browse/PHOENIX-1851
> Project: Phoenix
> Issue Type: Sub-task
> Reporter: Maryann Xue
> Labels: calcite
> Original Estimate: 720h
> Remaining Estimate: 720h
>
> The RelMetadataProvider is to provide information required for calculating
> cost for RelNode instances. It includes row count, selectivity, distinct row
> count, etc. Some of the information may be already available from existing
> Phoenix statistics, and we will have to enhance Phoenix statistics to
> implement the rest.
> The metadata provider classes to implement include:
> PhoenixRelMdCollation
> PhoenixRelMdColumnOrigins
> PhoenixRelMdColumnUniqueness
> PhoenixRelMdDistinctRowCount
> PhoenixRelMdDistribution
> PhoenixRelMdExplainVisibility
> PhoenixRelMdMemory
> PhoenixRelMdParallelism
> PhoenixRelMdPercentageOriginalRows
> PhoenixRelMdPopulationSize
> PhoenixRelMdPredicates
> PhoenixRelMdRowCount
> PhoenixRelMdSelectivity
> PhoenixRelMdSize
> PhoenixRelMdUniqueKeys
> We have default implementations in DefaultRelMetadataProvider, so we only
> need to implement those Phoenix specific metadata methods in the above
> classes.
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