Chang Li created HDFS-8716:
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Summary: introduce a new config specifically for safe mode block
count
Key: HDFS-8716
URL: https://issues.apache.org/jira/browse/HDFS-8716
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Chang Li
Assignee: Chang Li
During the start up, namenode waits for n replicas of each block to be reported
by datanodes before exiting the safe mode. Currently n is tied to the min
replicas config. We could set min replicas to more than one but we might want
to exit safe mode as soon as each block has one replica reported. This can be
worked out by introducing a new config variable for safe mode block count
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