Xiaoqiao He created HDFS-15000:
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Summary: Improve FsDatasetImpl to avoid IO operation in datasetLock
Key: HDFS-15000
URL: https://issues.apache.org/jira/browse/HDFS-15000
Project: Hadoop HDFS
Issue Type: Improvement
Components: datanode
Reporter: Xiaoqiao He
Assignee: Aiphago
As HDFS-14997 mentioned, some methods in #FsDatasetImpl such as #finalizeBlock,
#finalizeReplica, #createRbw includes IO operation in the datasetLock, It will
block some logic when IO load is very high. We should reduce grain fineness or
move IO operation out of datasetLock.
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