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Hi Dave,


This is usually caused because you have set a bad safety valve for MapReduce or Yarn client enviornment, usually because you installed LZO and made a mistake when the safety valve for MR to pick up the parcel.


Here's the docs for using the LZO parcel:


The mistake people often make is forgetting to append to the existing value for HADOOP_CLASSPATH or any other variable. Since Hive uses MR client configs, when it sources it will have its classpath overwritten by your MR client env safety valve.


So this is bad for client environment safety valves:


and this is good:





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