[ 
https://issues.apache.org/jira/browse/BEAM-13202?focusedWorklogId=727661&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-727661
 ]

ASF GitHub Bot logged work on BEAM-13202:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 15/Feb/22 19:08
            Start Date: 15/Feb/22 19:08
    Worklog Time Spent: 10m 
      Work Description: iemejia commented on a change in pull request #16856:
URL: https://github.com/apache/beam/pull/16856#discussion_r807100993



##########
File path: 
sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/transform/agg/CountIf.java
##########
@@ -33,21 +37,30 @@ public static CountIfFn combineFn() {
 
   public static class CountIfFn extends Combine.CombineFn<Boolean, 
CountIfFn.Accum, Long> {
 
-    public static class Accum implements Serializable {
-      boolean isExpressionFalse = true;
-      long countIfResult = 0L;
+    @AutoValue
+    public abstract static class Accum implements Serializable {
+      abstract boolean isExpressionFalse();

Review comment:
       Oh you have a point actually CountIf is a specific case of Count I am 
going to reuse Count's logic then. Thanks for pointing this out!




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Issue Time Tracking
-------------------

    Worklog Id:     (was: 727661)
    Time Spent: 50m  (was: 40m)

> Add Coder to CountIfFn.Accum
> ----------------------------
>
>                 Key: BEAM-13202
>                 URL: https://issues.apache.org/jira/browse/BEAM-13202
>             Project: Beam
>          Issue Type: Improvement
>          Components: dsl-sql
>    Affects Versions: 2.33.0
>         Environment: GCP Dataflow
>            Reporter: Patricio Navarro
>            Assignee: Ismaël Mejía
>            Priority: P3
>             Fix For: 2.38.0
>
>          Time Spent: 50m
>  Remaining Estimate: 0h
>
> When using 
> {code:java}
> org.apache.beam.sdk.extensions.sql.impl.transform.agg.CountIf 
> {code}
> with dataflow-runner I got the following issue:
> {noformat}
> [WARNING] 
> java.lang.RuntimeException: java.io.IOException: Could not obtain a Coder for 
> the accumulator
>     at 
> org.apache.beam.runners.core.construction.PipelineTranslation$1.leaveCompositeTransform
>  (PipelineTranslation.java:78)
>     at org.apache.beam.sdk.runners.TransformHierarchy$Node.visit 
> (TransformHierarchy.java:584)
>     at org.apache.beam.sdk.runners.TransformHierarchy$Node.visit 
> (TransformHierarchy.java:579)
>     at org.apache.beam.sdk.runners.TransformHierarchy$Node.visit 
> (TransformHierarchy.java:579)
>     at org.apache.beam.sdk.runners.TransformHierarchy$Node.visit 
> (TransformHierarchy.java:579)
>     at org.apache.beam.sdk.runners.TransformHierarchy$Node.visit 
> (TransformHierarchy.java:579)
>     at org.apache.beam.sdk.runners.TransformHierarchy$Node.visit 
> (TransformHierarchy.java:579)
>     at org.apache.beam.sdk.runners.TransformHierarchy$Node.access$500 
> (TransformHierarchy.java:239)
>     at org.apache.beam.sdk.runners.TransformHierarchy.visit 
> (TransformHierarchy.java:213)
>     at org.apache.beam.sdk.Pipeline.traverseTopologically (Pipeline.java:468)
>     at org.apache.beam.runners.core.construction.PipelineTranslation.toProto 
> (PipelineTranslation.java:60)
>     at org.apache.beam.runners.dataflow.DataflowRunner.run 
> (DataflowRunner.java:996)
>     at org.apache.beam.runners.dataflow.DataflowRunner.run 
> (DataflowRunner.java:203)
>     at org.apache.beam.sdk.Pipeline.run (Pipeline.java:322)
>     at org.apache.beam.sdk.Pipeline.run (Pipeline.java:308)
>     at 
> com.hypertv.AnalyticsLoggerStore.PubsubToStorage.runPubsubToStoragePipeline 
> (PubsubToStorage.java:115)
>     at com.hypertv.AnalyticsLoggerStore.PubsubToStorage.main 
> (PubsubToStorage.java:122)
>     at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
>     at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
> (NativeMethodAccessorImpl.java:62)
>     at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
> (DelegatingMethodAccessorImpl.java:43)
>     at java.lang.reflect.Method.invoke (Method.java:566)
>     at org.codehaus.mojo.exec.ExecJavaMojo$1.run (ExecJavaMojo.java:282)
>     at java.lang.Thread.run (Thread.java:829)
> Caused by: java.io.IOException: Could not obtain a Coder for the accumulator
>     at 
> org.apache.beam.runners.core.construction.CombineTranslation$CombineGroupedValuesPayloadTranslator.extractAccumulatorCoder
>  (CombineTranslation.java:207)
>     at 
> org.apache.beam.runners.core.construction.CombineTranslation$CombineGroupedValuesPayloadTranslator.translate
>  (CombineTranslation.java:179)
>     at 
> org.apache.beam.runners.core.construction.PTransformTranslation$KnownTransformPayloadTranslator.translate
>  (PTransformTranslation.java:438)
>     at 
> org.apache.beam.runners.core.construction.PTransformTranslation.toProto 
> (PTransformTranslation.java:248)
>     at 
> org.apache.beam.runners.core.construction.SdkComponents.registerPTransform 
> (SdkComponents.java:175)
>     at 
> org.apache.beam.runners.core.construction.PipelineTranslation$1.leaveCompositeTransform
>  (PipelineTranslation.java:75)
>     at org.apache.beam.sdk.runners.TransformHierarchy$Node.visit 
> (TransformHierarchy.java:584)
>     at org.apache.beam.sdk.runners.TransformHierarchy$Node.visit 
> (TransformHierarchy.java:579)
>     at org.apache.beam.sdk.runners.TransformHierarchy$Node.visit 
> (TransformHierarchy.java:579)
>     at org.apache.beam.sdk.runners.TransformHierarchy$Node.visit 
> (TransformHierarchy.java:579)
>     at org.apache.beam.sdk.runners.TransformHierarchy$Node.visit 
> (TransformHierarchy.java:579)
>     at org.apache.beam.sdk.runners.TransformHierarchy$Node.visit 
> (TransformHierarchy.java:579)
>     at org.apache.beam.sdk.runners.TransformHierarchy$Node.access$500 
> (TransformHierarchy.java:239)
>     at org.apache.beam.sdk.runners.TransformHierarchy.visit 
> (TransformHierarchy.java:213)
>     at org.apache.beam.sdk.Pipeline.traverseTopologically (Pipeline.java:468)
>     at org.apache.beam.runners.core.construction.PipelineTranslation.toProto 
> (PipelineTranslation.java:60)
>     at org.apache.beam.runners.dataflow.DataflowRunner.run 
> (DataflowRunner.java:996)
>     at org.apache.beam.runners.dataflow.DataflowRunner.run 
> (DataflowRunner.java:203)
>     at org.apache.beam.sdk.Pipeline.run (Pipeline.java:322)
>     at org.apache.beam.sdk.Pipeline.run (Pipeline.java:308)
>     at 
> com.hypertv.AnalyticsLoggerStore.PubsubToStorage.runPubsubToStoragePipeline 
> (PubsubToStorage.java:115)
>     at com.hypertv.AnalyticsLoggerStore.PubsubToStorage.main 
> (PubsubToStorage.java:122)
>     at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
>     at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
> (NativeMethodAccessorImpl.java:62)
>     at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
> (DelegatingMethodAccessorImpl.java:43)
>     at java.lang.reflect.Method.invoke (Method.java:566)
>     at org.codehaus.mojo.exec.ExecJavaMojo$1.run (ExecJavaMojo.java:282)
>     at java.lang.Thread.run (Thread.java:829)
> Caused by: org.apache.beam.sdk.coders.CannotProvideCoderException: Cannot 
> infer coder for type parameter AccumT
>     at org.apache.beam.sdk.coders.CoderRegistry.getCoder 
> (CoderRegistry.java:328)
>     at 
> org.apache.beam.sdk.transforms.CombineFnBase$AbstractGlobalCombineFn.getAccumulatorCoder
>  (CombineFnBase.java:119)
>     at org.apache.beam.sdk.transforms.Combine$CombineFn.getAccumulatorCoder 
> (Combine.java:391)
>     at 
> org.apache.beam.sdk.extensions.sql.impl.transform.agg.AggregationCombineFnAdapter$WrappedCombinerBase.getAccumulatorCoder
>  (AggregationCombineFnAdapter.java:75)
>     at 
> org.apache.beam.sdk.transforms.CombineFns$ComposedCombineFn.getAccumulatorCoder
>  (CombineFns.java:430)
>     at 
> org.apache.beam.sdk.schemas.transforms.SchemaAggregateFn$Inner.getAccumulatorCoder
>  (SchemaAggregateFn.java:335)
>     at 
> org.apache.beam.runners.core.construction.CombineTranslation$CombineGroupedValuesPayloadTranslator.extractAccumulatorCoder
>  (CombineTranslation.java:204)
>     at 
> org.apache.beam.runners.core.construction.CombineTranslation$CombineGroupedValuesPayloadTranslator.translate
>  (CombineTranslation.java:179)
>     at 
> org.apache.beam.runners.core.construction.PTransformTranslation$KnownTransformPayloadTranslator.translate
>  (PTransformTranslation.java:438)
>     at 
> org.apache.beam.runners.core.construction.PTransformTranslation.toProto 
> (PTransformTranslation.java:248)
>     at 
> org.apache.beam.runners.core.construction.SdkComponents.registerPTransform 
> (SdkComponents.java:175)
>     at 
> org.apache.beam.runners.core.construction.PipelineTranslation$1.leaveCompositeTransform
>  (PipelineTranslation.java:75)
>     at org.apache.beam.sdk.runners.TransformHierarchy$Node.visit 
> (TransformHierarchy.java:584)
>     at org.apache.beam.sdk.runners.TransformHierarchy$Node.visit 
> (TransformHierarchy.java:579)
>     at org.apache.beam.sdk.runners.TransformHierarchy$Node.visit 
> (TransformHierarchy.java:579)
>     at org.apache.beam.sdk.runners.TransformHierarchy$Node.visit 
> (TransformHierarchy.java:579)
>     at org.apache.beam.sdk.runners.TransformHierarchy$Node.visit 
> (TransformHierarchy.java:579)
>     at org.apache.beam.sdk.runners.TransformHierarchy$Node.visit 
> (TransformHierarchy.java:579)
>     at org.apache.beam.sdk.runners.TransformHierarchy$Node.access$500 
> (TransformHierarchy.java:239)
>     at org.apache.beam.sdk.runners.TransformHierarchy.visit 
> (TransformHierarchy.java:213)
>     at org.apache.beam.sdk.Pipeline.traverseTopologically (Pipeline.java:468)
>     at org.apache.beam.runners.core.construction.PipelineTranslation.toProto 
> (PipelineTranslation.java:60)
>     at org.apache.beam.runners.dataflow.DataflowRunner.run 
> (DataflowRunner.java:996)
>     at org.apache.beam.runners.dataflow.DataflowRunner.run 
> (DataflowRunner.java:203)
>     at org.apache.beam.sdk.Pipeline.run (Pipeline.java:322)
>     at org.apache.beam.sdk.Pipeline.run (Pipeline.java:308)
>     at 
> com.hypertv.AnalyticsLoggerStore.PubsubToStorage.runPubsubToStoragePipeline 
> (PubsubToStorage.java:115)
>     at com.hypertv.AnalyticsLoggerStore.PubsubToStorage.main 
> (PubsubToStorage.java:122)
>     at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
>     at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
> (NativeMethodAccessorImpl.java:62)
>     at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
> (DelegatingMethodAccessorImpl.java:43)
>     at java.lang.reflect.Method.invoke (Method.java:566)
>     at org.codehaus.mojo.exec.ExecJavaMojo$1.run (ExecJavaMojo.java:282)
>     at java.lang.Thread.run (Thread.java:829)
> [INFO] 
> ------------------------------------------------------------------------
> [INFO] BUILD FAILURE
> [INFO] 
> ------------------------------------------------------------------------
> [INFO] Total time:  57.006 s
> [INFO] Finished at: 2021-10-25T13:54:23Z
> [INFO] 
> ------------------------------------------------------------------------
> [ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.6.0:java 
> (default-cli) on project connected-stories-analytics-logger-store: An 
> exception occured while executing the Java class. java.io.IOException: Could 
> not obtain a Coder for the accumulator: Cannot infer coder for type parameter 
> AccumT -> [Help 1]
> {noformat}
> So I found out that 
> {code:java}
> CountIfFn.Accum
> {code}
>  on Beam seems not to have an associated Coder.
> FYI - [~iemejia]



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