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From Chetan Mehrotra <chetan.mehro...@gmail.com>
Subject Re: Use FileDataStore with NFS SAN (NAS)
Date Fri, 11 Nov 2016 05:46:14 GMT
Interesting. This means that rename operation as per Jave on NFS is
performing slowly while a copy via FileChannel is performing better?
Can you provide some numbers here and NFS mount details.

As so far my understand was that if a file is already created in NFS
mount and then the rename operation should be fast i.e. O(1) instead
of being a function of size
Chetan Mehrotra

On Thu, Nov 10, 2016 at 10:25 PM, hsp <piccinatto@hotmail.com> wrote:
> Hi,
> We use persistence with DataStore using a path that maps to a remote NAS,
> using NFS.
> With the default configuration in
> org.apache.jackrabbit.core.data.FileDataStore it was causing too much delay
> to upload the files from server to the NAS.
> To workaround this we implemented a option in FileDataStore that uses
> java.nio.Channels.FileChannel and performs better than the default way, over
> a version 2.10.0.
> Would be better (less error prone for us) if this implementation could be
> part of the api build.
> The configuration in repository.xml would be added with a parameter in
> DataStore element:
>     <DataStore class="org.apache.jackrabbit.core.data.FileDataStore">
>     </DataStore>
> In our code, the parameter REMOTEPERSISTENCEBYNFS is hardcoded so far...
> Our environment server is with:
>  linux SUSE SLES 11 sp3, kernel "3.0.101-0.15-default"
> 4.2.3.GA (build: SVNTag=JBoss_4_2_3_GA date=200807181440) (eager to upgrade
> to Java 8 and wildFLy10 as soon as possible, probably next year)
> JVM:    1.6.0_27
> I would be glad if you can suggest ideas or better approach to solve this
> "neck" in the process to save a file.
> We are waiting for version 2.14 of jackrabbit, hoping not to have to
> generate a parallel version of it, ;-).
> The file is attached, sorry by not make only a diff file.
> Best Regards,
> Helio. FileDataStore.java
> <http://jackrabbit.510166.n4.nabble.com/file/n4665414/FileDataStore.java>
> --
> View this message in context: http://jackrabbit.510166.n4.nabble.com/Use-FileDataStore-with-NFS-SAN-NAS-tp4665414.html
> Sent from the Jackrabbit - Users mailing list archive at Nabble.com.

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