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https://issues.apache.org/jira/browse/STORM-2146?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jungtaek Lim closed STORM-2146.
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Resolution: Invalid
We decided to postpone 'join' until we can use 'Streaming SQL'. So this is
invalid for now.
> Storm SQL - Support JOIN between Streaming data source and State data source
> in Trident mode
> --------------------------------------------------------------------------------------------
>
> Key: STORM-2146
> URL: https://issues.apache.org/jira/browse/STORM-2146
> Project: Apache Storm
> Issue Type: New Feature
> Components: storm-sql
> Reporter: Jungtaek Lim
>
> This issue is only targeted to Trident mode.
> This issue also handles drop supporting join between Streaming data source
> and Streaming data source since the join is based on micro-batch so result is
> non-deterministic which doesn't make sense.
> This issue tracks supporting join between Streaming data source and State
> data source.
> Following works should be done:
> - create interface for State Table which is able to query value based on key
> - define DDL for State data source
> - modify visitTableScan in TridentLogicalPlanCompiler to handle State data
> source
> - modify visitJoin in TridentLogicalPlanCompiler
> -- check join condition: first one is Streaming and next one is State
> --- table order can be reversible
> --- only simple equi-join is supported (support compose key?)
> -- query to State via join key and join Streaming row and the value
> - address unit tests
> - update document
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