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https://issues.apache.org/jira/browse/HADOOP-4044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12629255#action_12629255
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Raghu Angadi commented on HADOOP-4044:
--------------------------------------
Both have extra RPC (or system call in case of LocalFS) for open of a normal
file (common case). How about something like :
{code}
public FSDataInputStream open(Path f, int bufferSize) throws IOException {
FileSystem fs = this;
for (int r = 0; r < maxRecursion; r++) {
try {
return fs.open(f, bufferSize, ..);
catch (SymLinkNotFollowedException e) {
f = e.getSymLink();
fs = f.getFileSystem(getConf());
}
}
}
{code}
> Create symbolic links in HDFS
> -----------------------------
>
> Key: HADOOP-4044
> URL: https://issues.apache.org/jira/browse/HADOOP-4044
> Project: Hadoop Core
> Issue Type: New Feature
> Components: dfs
> Reporter: dhruba borthakur
> Assignee: dhruba borthakur
> Attachments: symLink1.patch
>
>
> HDFS should support symbolic links. A symbolic link is a special type of file
> that contains a reference to another file or directory in the form of an
> absolute or relative path and that affects pathname resolution. Programs
> which read or write to files named by a symbolic link will behave as if
> operating directly on the target file. However, archiving utilities can
> handle symbolic links specially and manipulate them directly.
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