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https://issues.apache.org/jira/browse/VFS-161?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12509808
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Sebastian Skoglund commented on VFS-161:
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This is a major performance problem when handling many tasks in a "batch-job".
If I for instance want to create a numerous of files, rename and delete some
others it can take several minutes for a fairly small amount of operations. I
have done some testing and measurments regarding this matter and if I want to
create, rename and delete only 22 files (with a total size of ~300kB) it takes
as long as 72 seconds, which is unacceptable in my opinion.
> Minimize using of LIST command in the FTP provider
> --------------------------------------------------
>
> Key: VFS-161
> URL: https://issues.apache.org/jira/browse/VFS-161
> Project: Commons VFS
> Issue Type: Improvement
> Affects Versions: 1.1
> Reporter: Alex Crane
> Priority: Minor
>
> I have a big bis storage of files (about 10 TBytes).
> Path to file looks like
> /storage/storage1/node1/76423fds7g78df6gdf7hdfh/2384dg7sdfg8dfh.dat
> Existance checking and deleteing of files takes very looooooooong time
> because of LIST command:
> LIST /storage
> ...
> LIST /storage/storage1
> ...
> LIST /storage/storage1/node1
> ....
> LIST /storage/storage1/node1/76423fds7g78df6gdf7hdfh
> and so on.
> For example, there is no need to perform LIST command to delete file. I`m
> using FTPClients from commons.net and it works 1000x faster.
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