MaoYuan Xian created HADOOP-10434:
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Summary: Is it possible to use "df" to calculating the dfs usage
indtead of "du"
Key: HADOOP-10434
URL: https://issues.apache.org/jira/browse/HADOOP-10434
Project: Hadoop Common
Issue Type: Improvement
Components: fs
Affects Versions: 2.3.0
Reporter: MaoYuan Xian
Priority: Minor
When we run datanode from the machine with big disk volume, it's found du
operations from org.apache.hadoop.fs.DU's DURefreshThread cost lots of disk
performance.
As we use the whole disk for hdfs storage, it is possible calculate volume
usage via "df" command. Is it necessary adding the "df" option for usage
calculation in hdfs
(org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.BlockPoolSlice)?
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