Jing Zhao created HDFS-9223:
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Summary: Code cleanup for DatanodeDescriptor and HeartbeatManager
Key: HDFS-9223
URL: https://issues.apache.org/jira/browse/HDFS-9223
Project: Hadoop HDFS
Issue Type: Bug
Components: namenode
Reporter: Jing Zhao
Assignee: Jing Zhao
Priority: Minor
Some code cleanup for {{DatanodeDescriptor}} and {{HeartbeatManager}}. The
changes include:
# Change {{DataDescriptor#isAlive}} and {{DatanodeDescriptor#needKeyUpdate}}
from public to private
# Use EnumMap for {{HeartbeatManager#storageTypeStatesMap}}
# Move the {{isInStartupSafeMode}} out of the namesystem lock in
{{heartbeatCheck}}
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