hadoop - How to obtain Map Reduce code from Hive Query? -


how hive generate map reduce code automatically each query , possible view map reduce code generated hive each query ?

hive not generate map reduce code rather uses different type of operators map operator, reduce operator , join operator, limit operator...... uses corresponding operators based on plan generated our sql.

the code operators can found in jar hive-exec.jar here repository link code http://svn.apache.org/viewvc/hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/exec/


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