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  1. ,

    Exception in thread "main" java.util.Hashtable$Enumerator at Source) at Source) at

  2. ,
    via Stack Overflow by Matthias

    Your object contains member variables which are themselves not serializable 'ReportDataStoreRegion'. If you really want to serialize your object. One option would be to declare the variable as transient so that it is not serialized.

Solutions on the web

via Stack Overflow by Haden Hooyeon Lee
, 1 year ago
unable to serialize tmp.dataflow.experimental.TestSideOutput$Filter@6986852
via Stack Overflow by shadow chris
, 10 months ago
via Stack Overflow by Jeremy
, 2 years ago
unable to serialize contrail.dataflow.AvroMRTransforms$AvroReducerDoFn@bba0fc2 tmp.dataflow.experimental.TestSideOutput	at	at	at	at	at	at	at	at	at	at	at	at	at$BoundMulti.(	at$UnboundMulti.of(	at$UnboundMulti.of(	at tmp.dataflow.experimental.TestSideOutput.execute(	at com.moloco.dataflow.Main.main(