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  1. Flink
  2. FLINK-20747

ClassCastException when using MAX aggregate function

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Critical
    • Resolution: Duplicate
    • Affects Version/s: 1.12.0
    • Fix Version/s: 1.13.0
    • Component/s: Table SQL / Planner
    • Labels:
      None

      Description

      During the process of upgrading 1.12.0, I found that Flink SQL 1.11.1  is not compatible 

      java.lang.ClassCastException: java.lang.Integer cannot be cast to org.apache.flink.table.data.StringDatajava.lang.ClassCastException: java.lang.Integer cannot be cast to org.apache.flink.table.data.StringData at org$apache$flink$table$planner$functions$aggfunctions$MaxWithRetractAggFunction$MaxWithRetractAccumulator$Converter.toInternal(Unknown Source) at org.apache.flink.table.data.conversion.StructuredObjectConverter.toInternal(StructuredObjectConverter.java:92) at org.apache.flink.table.data.conversion.StructuredObjectConverter.toInternal(StructuredObjectConverter.java:47) at org.apache.flink.table.data.conversion.DataStructureConverter.toInternalOrNull(DataStructureConverter.java:59) at GroupAggsHandler$875.getAccumulators(Unknown Source) at org.apache.flink.table.runtime.operators.aggregate.GroupAggFunction.processElement(GroupAggFunction.java:175) at org.apache.flink.table.runtime.operators.aggregate.GroupAggFunction.processElement(GroupAggFunction.java:45) at org.apache.flink.streaming.api.operators.KeyedProcessOperator.processElement(KeyedProcessOperator.java:85) at org.apache.flink.streaming.runtime.tasks.OneInputStreamTask$StreamTaskNetworkOutput.emitRecord(OneInputStreamTask.java:193) at org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput.processElement(StreamTaskNetworkInput.java:179) at org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput.emitNext(StreamTaskNetworkInput.java:152) at org.apache.flink.streaming.runtime.io.StreamOneInputProcessor.processInput(StreamOneInputProcessor.java:67) at org.apache.flink.streaming.runtime.tasks.StreamTask.processInput(StreamTask.java:372) at org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:186) at org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:575) at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:539) at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:722) at org.apache.flink.runtime.taskmanager.Task.run(Task.java:547)

       

       

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              • Assignee:
                lzljs3620320 Jingsong Lee
                Reporter:
                zengjinbo zengjinbo
              • Votes:
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                • Created:
                  Updated:
                  Resolved: