Arpit Agarwal created HDFS-7112:
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Summary: LazyWriter should use either async IO or one thread per
physical disk
Key: HDFS-7112
URL: https://issues.apache.org/jira/browse/HDFS-7112
Project: Hadoop HDFS
Issue Type: Sub-task
Components: datanode
Affects Versions: HDFS-6581
Reporter: Arpit Agarwal
The LazyWriter currently uses synchronous IO and a single thread. This limits
the throughput to that of a single disk. Using either async overlapped IO or
one thread per physical disk will improve the write throughput.
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