Lei (Eddy) Xu created HADOOP-11626:
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Summary: DFSInputStream should only update ReadStatistics when the
read is success.
Key: HADOOP-11626
URL: https://issues.apache.org/jira/browse/HADOOP-11626
Project: Hadoop Common
Issue Type: Bug
Affects Versions: 2.6.0
Reporter: Lei (Eddy) Xu
Assignee: Lei (Eddy) Xu
Priority: Trivial
In {{DFSOutputStream#actualGetFromOneDataNode()}}, it updates the
{{ReadStatistics}} even the read is failed:
{code}
int nread = reader.readAll(buf, offset, len);
updateReadStatistics(readStatistics, nread, reader);
if (nread != len) {
throw new IOException("truncated return from reader.read(): " +
"excpected " + len + ", got " + nread);
}
{code}
It should only record success read, i.e., after throwing {{IOE}}.
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