Hemanth Boyina created HDFS-15569:
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Summary: Speed up the Storage#doRecover during datanode rolling
upgrade
Key: HDFS-15569
URL: https://issues.apache.org/jira/browse/HDFS-15569
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Hemanth Boyina
Assignee: Hemanth Boyina
When upgrading datanode from hadoop 2.7.2 to 3.1.1 , because of jvm not having
enough memory upgrade failed , Adjusted memory configurations and re upgraded
datanode ,
Now datanode upgrade has taken more time , on analyzing found that
Storage#deleteDir has taken more time in Recover_Upgrade state
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