Jiandan Yang created HDFS-13984:
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Summary: getFileInfo of libhdfs call NameNode#getFileStatus twice
Key: HDFS-13984
URL: https://issues.apache.org/jira/browse/HDFS-13984
Project: Hadoop HDFS
Issue Type: Improvement
Components: libhdfs
Reporter: Jiandan Yang
Assignee: Jiandan Yang
getFileInfo in hdfs.c calls *FileSystem#exists* first, then calls
*FileSystem#getFileStatus*. *FileSystem#exists* also call
*FileSystem#getFileStatus, just as follows:
{code:java}
public boolean exists(Path f) throws IOException {
try {
return getFileStatus(f) != null;
} catch (FileNotFoundException e) {
return false;
}
}
{code}
and finally this leads to call NameNodeRpcServer#getFileInfo twice.
Actually we can implement by calling once.
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