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| File Name | Parameter Name | Parameter value | Description | |
|---|---|---|---|---|
| mapred-site.xml | mapreduce.framework.name | yarn | To use YARN for resource management. | |
| mapred-site.xml | mapreduce.jobhistory.webapp.address | <ip_address>:<port> | Job history server Web UI IP address and port number | |
| mapred-site.xml | yarn.app.mapreduce.am.* | Parameters related to application master | ||
| mapred-site.xml | mapreduce.map.java.opts | JVM Heap size for child task of map container | ||
| mapred-site.xml | mapreduce.reduce.java.opts | JVM Heap size for child task of reduce container | ||
| mapred-site.xml | mapreduce.map.memory.mb | Size of container for map task | ||
| mapred-site.xml | mapreduce.map.cpu.vcores | 1 | Number of virtual cores required to run each map task | |
| mapred-site.xml | mapreduce.reduce.memory.mb | Size of container for reduce task | ||
| mapred-site.xml | mapreduce.reduce.cpu.vcores | 1 | Number of virtual cores required to run each reduce task | |
| mapred-site.xml | mapreduce.input.fileinputformat.split.minsize | 0 | Overriding split size to increase or decrease number of mappers while processing data |
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