ERROR sqoop.Sqoop: Got exception running Sqoop: java.lang.NullPointerException 解决方案【SOLVED】

洛萨之锋公司最近需要使用sqoop利用hcatalog将数据从mysql导入到hive，我在导数据的时候碰到这样的问题：

ERROR sqoop.Sqoop: Got exception running Sqoop: java.lang.NullPointerException.

具体Exception是：

java.lang.NullPointerException
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1012)
at java.lang.Runtime.exec(Runtime.java:620)
at java.lang.Runtime.exec(Runtime.java:528)
at org.apache.sqoop.util.Executor.exec(Executor.java:76)
at org.apache.sqoop.mapreduce.hcat.SqoopHCatUtilities.executeExternalHCatProgram(SqoopHCatUtilities.java:1126)
at org.apache.sqoop.mapreduce.hcat.SqoopHCatUtilities.launchHCatCli(SqoopHCatUtilities.java:1078)
at org.apache.sqoop.mapreduce.hcat.