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https://issues.apache.org/jira/browse/HADOOP-10247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13877777#comment-13877777
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Chris Nauroth commented on HADOOP-10247:
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See below for sample output that demonstrates the problem. The reason for this
is that {{Ls#adjustColumnWidths}} executes separately for each recursion down
the tree via the base {{Command}} class. Therefore, it can calculate the max
lengths and readjust only for the subset of paths that it encounters within
that recursion. If it encounters a larger max length lower down in the tree,
then it's too late to adjust for the paths higher in the tree that were already
printed.
I don't see an obvious way to fix this completely. I don't think we can
iterate through all paths recursively to get a more accurate max length
calculation, because that would require holding the whole tree in memory on the
client side.
{code}
[chris@Chriss-MacBook-Pro:ttys003] hadoop-deploy-HDFS-4685
> hadoop-3.0.0-SNAPSHOT/bin/hdfs dfs -ls -R /
drwxr-xr-x - chris supergroup 0 2014-01-18 08:50 /dir1
-rw-r--r-- 3 chris supergroup 6 2014-01-18 08:50 /dir1/file1
-rw-r--r-- 3 longusername supergroup 6 2014-01-18 08:50 /dir1/file2
drwxr-xr-x - chris supergroup 0 2014-01-18 08:50 /dir2
-rwxrwxrwt 3 chris supergroup 6 2014-01-19 10:56 /file3
{code}
> FsShell -ls -R output misaligned if child path has longer string
> representation than parent.
> --------------------------------------------------------------------------------------------
>
> Key: HADOOP-10247
> URL: https://issues.apache.org/jira/browse/HADOOP-10247
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs
> Affects Versions: 2.2.0
> Reporter: Chris Nauroth
> Priority: Minor
>
> When running a recursive ls, like {{hdfs dfs -ls -R /}}, the column
> formatting becomes misaligned if there is a child path with a longer string
> representation (such as caused by a longer username) compared to its parent.
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