java.lang.IllegalArgumentException: Key type must be of class WritableType

crunch-user | Kristoffer Sjögren | 2 years ago
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    Root Cause Analysis

    1. java.lang.IllegalArgumentException

      Key type must be of class WritableType

      at org.apache.crunch.types.writable.Writables.tableOf()
    2. org.apache.crunch
      MemCollection.count
      1. org.apache.crunch.types.writable.Writables.tableOf(Writables.java:351)
      2. org.apache.crunch.types.writable.WritableTypeFamily.tableOf(WritableTypeFamily.java:95)
      3. org.apache.crunch.lib.Aggregate.count(Aggregate.java:65)
      4. org.apache.crunch.lib.Aggregate.count(Aggregate.java:56)
      5. org.apache.crunch.impl.mem.collect.MemCollection.count(MemCollection.java:230)
      5 frames
    3. mapred.functions
      FunctionsTest.testGroupActionCount
      1. mapred.functions.FunctionsTest.testGroupActionCount(FunctionsTest.java:79)
      1 frame