Hualong Zhang created HDFS-16243:
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Summary: The available disk space is less than the reserved space,
and no log message is displayed
Key: HDFS-16243
URL: https://issues.apache.org/jira/browse/HDFS-16243
Project: Hadoop HDFS
Issue Type: Improvement
Components: datanode
Affects Versions: 2.7.2
Reporter: Hualong Zhang
When I submitted a task to the hadoop test cluster, it appeared "could only be
replicated to 0 nodes instead of minReplication (=1)"
I checked the namenode and datanode logs and did not find any error logs. It
was not until the use of dfsadmin -report that the available capacity was 0 and
I realized that it may be a configuration problem.
Checking the configuration found that the value of the
"dfs.datanode.du.reserved" configuration is greater than the available disk
space of HDFS, which caused this problem
It seems that there should be some warnings or errors in the log.
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