tomscut created HDFS-15879:
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Summary: Exclude slow nodes when choose targets for blocks
Key: HDFS-15879
URL: https://issues.apache.org/jira/browse/HDFS-15879
Project: Hadoop HDFS
Issue Type: Wish
Reporter: tomscut
Assignee: tomscut
Previously, we have monitored the slow nodes, related to
https://issues.apache.org/jira/browse/HDFS-11194.
We can use a thread to periodically collect these slow nodes into a set. Then
use the set to filter out slow nodes when choose targets for blocks.
This feature can be configured to be turned on when needed.
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