Preventing node from swapping
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Key: HADOOP-5817
URL: https://issues.apache.org/jira/browse/HADOOP-5817
Project: Hadoop Core
Issue Type: Improvement
Components: mapred
Reporter: Hong Tang
When a node swaps, it slows everything: maps running on that node, reducers
fetching output from the node, and DFS clients reading from the DN. We should
just treat it the same way as if OS exhausts memory and kill some tasks to free
up memory.
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