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Posted to issues@flink.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2019/01/21 12:12:01 UTC
[jira] [Updated] (FLINK-7018) Refactor streamGraph to make
interfaces clear
[ https://issues.apache.org/jira/browse/FLINK-7018?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ASF GitHub Bot updated FLINK-7018:
----------------------------------
Labels: pull-request-available (was: )
> Refactor streamGraph to make interfaces clear
> ---------------------------------------------
>
> Key: FLINK-7018
> URL: https://issues.apache.org/jira/browse/FLINK-7018
> Project: Flink
> Issue Type: Improvement
> Components: DataStream API
> Reporter: Xu Pingyong
> Assignee: Xu Pingyong
> Priority: Major
> Labels: pull-request-available
>
> Motivation:
> 1. StreamGraph is a graph consisted of some streamNodes. So virtual nodes (such as select, sideOutput, partition) should be moved away from it. Main iterfaces of StreamGraph should be as following:
> addSource(StreamNode sourceNode)
> addSink(StreamNode sinkNode)
> addOperator(StreamNode streamNode)
> addEdge(Integer upStreamVertexID, Integer downStreamVertexID, StreamEdge.InputOrder inputOrder, StreamPartitioner<?> partitioner, List<String> outputNames, OutputTag outputTag)
> getJobGraph()
> 2. StreamExecutionEnvironment should not be in StreamGraph, I create StreamGraphProperties which extracts all env information the streamGraph needs from StreamExecutionEnvironment. It contains:
> 1) executionConfig
> 2) checkpointConfig
> 3) timeCharacteristic
> 4) stateBackend
> 5) chainingEnabled
> 6) cachedFiles
> 7) jobName
>
> Related Changes:
> I moved the part of dealing with virtual nodes to StreamGraphGenerator. And get properties of StreamGraph from StreamGraphProperties instead of StreamExecutionEnvironment.
>
> It is only a code abstraction internally.
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