tomscut created HDFS-16076:
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Summary: Avoid using slow DataNodes for reading by sorting
locations
Key: HDFS-16076
URL: https://issues.apache.org/jira/browse/HDFS-16076
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: tomscut
Assignee: tomscut
After sorting the expected location list will be: live -> slow -> stale ->
staleAndSlow -> entering_maintenance -> decommissioned. This reduces the
probability that slow nodes will be used for reading.
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