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Spark- SparkSQL中 Row.getLong 出现NullPointerException错误的处理方法
在SparkSQL中获取Row的值,而且Row的字段允许null时,在取值的时候取到null赋值- 0
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Spark- Spark Yarn模式下跑yarn-client无法初始化SparkConext,Over usage of virtual memory
在spark yarn模式下跑yarn-client时出现无法初始化SparkContext错误.  - 0
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Spark- ERROR Shell: Failed to locate the winutils binary in the hadoop binary path java.io.IOException: Could not locate executable null\bin\winutils.exe in the Hadoop binaries.
运行 mport org.apache.log4j.{Level, Logger} import org.ap- 0
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Spark- ERROR Shell: Failed to locate the winutils binary in the hadoop binary path java.io.IOException: Could not locate executable null\bin\winutils.exe in the Hadoop binaries.
报错 G:\APP\JDK\bin\java -Didea.launcher.port=7532- 0
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