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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (SPARK-19378) StateOperator metrics should still return the total number of rows in state even if there was no data for a trigger
Date Fri, 27 Jan 2017 00:44:24 GMT

     [ https://issues.apache.org/jira/browse/SPARK-19378?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Apache Spark reassigned SPARK-19378:
------------------------------------

    Assignee: Burak Yavuz  (was: Apache Spark)

> StateOperator metrics should still return the total number of rows in state even if there
was no data for a trigger
> -------------------------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-19378
>                 URL: https://issues.apache.org/jira/browse/SPARK-19378
>             Project: Spark
>          Issue Type: Bug
>          Components: Structured Streaming
>    Affects Versions: 2.1.0
>            Reporter: Burak Yavuz
>            Assignee: Burak Yavuz
>
> If you have a StreamingDataFrame with an aggregation, we report a metric called stateOperators
which consists of a list of data points per aggregation for our query (With Spark 2.1, only
one aggregation is supported).
> These data points report:
>  - numUpdatedStateRows
>  - numTotalStateRows
> If a trigger had no data - therefore was not fired - we return 0 data points, however
we should actually return a data point with
>  - numTotalStateRows: numTotalStateRows in lastExecution
>  - numUpdatedStateRows: 0



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