java.lang.IllegalArgumentException

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  • How to count MemPipeline?
    via by Kristoffer Sjögren,
    • java.lang.IllegalArgumentException: Key type must be of class WritableType at org.apache.crunch.types.writable.Writables.tableOf(Writables.java:351) at org.apache.crunch.types.writable.WritableTypeFamily.tableOf(WritableTypeFamily.java:95) at org.apache.crunch.lib.Aggregate.count(Aggregate.java:65) at org.apache.crunch.lib.Aggregate.count(Aggregate.java:56) at org.apache.crunch.impl.mem.collect.MemCollection.count(MemCollection.java:230) at mapred.functions.FunctionsTest.testGroupActionCount(FunctionsTest.java:79)
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