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From "Burak Yavuz (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SPARK-19378) StateOperator metrics should still return the total number of rows in state even if there was no data for a trigger
Date Thu, 26 Jan 2017 23:52:24 GMT
Burak Yavuz created SPARK-19378:
-----------------------------------

             Summary: 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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