org.apache.spark.sql.DataFrameReader.parquet(DataFrameReader.scala:805)
smartbix.datamining.engine.execute.event.DatasetEvent.serializeFields(DatasetEvent.java:211)
smartbix.datamining.engine.util.EventSerializeUtil.serialize(EventSerializeUtil.java:45)
smartbix.datamining.engine.agent.execute.flow.DefaultSparkFlowContext.persistNodeExecuteResult(DefaultSparkFlowContext.java:97)
smartbix.datamining.engine.execute.node.GenericNode.finish(GenericNode.java:201)
smartbix.datamining.engine.execute.node.datasource.QueryNode.executeSqlQuery(QueryNode.java:223)
smartbix.datamining.engine.execute.node.datasource.QueryNode.execute(QueryNode.java:130)
smartbix.datamining.engine.execute.node.GenericNode.start(GenericNode.java:117)
smartbix.datamining.engine.agent.execute.executor.DefaultNodeExecutor.execute(DefaultNodeExecutor.java:43)
smartbix.datamining.engine.agent.execute.launcher.DefaultLauncher.run(DefaultLauncher.java:67)
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
java.util.concurrent.FutureTask.run(FutureTask.java:266)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
java.lang.Thread.run(Thread.java:748)