[ogsa-dmi-wg] Rescheduled Call for this Friday.

[Meredith, DJ (David)]

Hi Shabaz, 

Thanks for the comments. Some responses interleaved below. 

Cheers, 
Dave


>> a) Define a transfer consisting of multiple [src-sink] declarations in 
>> a single request document where the data may reside on different hosts.

> - Assuming if DTS accepting multiple sub-transfers as an atomic operation

I guess this could be specified by something like the DMI undo strategy, i.e. best effort (transfer as many sub-transfers as possible), all or nothing (fail on first sub-transfer failure). 


> - what about getting status of individual transfer, because this might be possible that some transfers are Started/failed/Done at some point.

Could each sub transfer should have a separate ID. 

>   - This is not only related to Status, the client requires InstanceAttributes (StartTime, State, CompletionTime, Attempts,
BytesTransferred) for each of the sub-transfer

Yes, I agree, e.g. use embedded dmi:TransferRequirements for each sub transfer (see line 118 in the example at http://code.google.com/p/dtsproject/source/browse/trunk/dts-jaxb/src/main/resources/dmi-messagesProposals.xml ) 

>   - Consider if client cancels or aborts any sub-transfer I think this information is hardly be projected in the case of multiple sub-transfers grouped in a single large transfer instance.

Would this be possible if each of the sub-transfers has an ID also thus returning a set of transfer ids (your next bullet). 

> IMHO DTS port type can define operations to prepare/send multiple transfers at once, and as a result the client gets a set of transfer ids to track individual ones.

I think that this is what I am trying to propose in the example/proposal - i.e. use something like the wrapped dmi message example to define the 'multi-transfer' port type. The aim is to prevent preventing the need to contact the WS repeatedly for a set of transfers.  Unless I have missed something, are there any existing examples of this multi-transfer port type ?




-----Original Message-----
From: shahbaz.memon at gmail.com [mailto:shahbaz.memon at gmail.com] On Behalf Of Shahbaz Memon
Sent: 16 July 2009 13:29
To: Meredith, DJ (David)
Cc: Mario Antonioletti; OGSA-DMI
Subject: Re: [ogsa-dmi-wg] Rescheduled Call for this Friday.

Hi Dave,

> a) Define a transfer consisting of multiple [src-sink] declarations in a
> single request document where the data may reside on different hosts.

- Assuming if DTS accepting multiple sub-transfers as an atomic operation,
   - what about getting status of individual transfer, because this
might be possible that some transfers are Started/failed/Done at some
point.
   - This is not only related to Status, the client requires
InstanceAttributes (StartTime, State, CompletionTime, Attempts,
BytesTransferred) for each of the sub-transfer
   - Consider if client cancels or aborts any sub-transfer
I think this information is hardly be projected in the case of
multiple sub-transfers grouped in a single large transfer instance.

IMHO DTS port type can define operations to prepare/send multiple
transfers at once, and as a result the client gets a set of transfer
ids to track individual ones.

Cheers,

Shahbaz

>
> -----Original Message-----
> From: ogsa-dmi-wg-bounces at ogf.org [mailto:ogsa-dmi-wg-bounces at ogf.org]
> On Behalf Of Mario Antonioletti
> Sent: 15 July 2009 16:24
> To: OGSA-DMI
> Subject: [ogsa-dmi-wg] Rescheduled Call for this Friday.
>
>
> Hi,
>    First of all my apologies but I completely forgot that we were
> scheduled to have a call last Monday - it somehow fell off my outlook
> calendar, still no excuse.
>
> We will now have the call this Friday at 11am UK time (GMT+1) which
> makes it 8pm in Australia. Details as below:
>
> Agenda
> ======
>
> - Agenda bashing
> - Progress update
>   - MAA determine if proposed changes can be passed off as errata.
>   - AL determine if existing spec can transfer multiple directories
>     living on the same host.
>   - SM WSRF OGSA-DMI rendering.
>   - Other stuff ...
> - Planning
>
> Please let me know if anything else should be added to the list.
>
> Call details
> ============
>                Participant access code: 23057332 then #
>
>               Primary dial-in number: 0870 2407821
>                 or if dialling internationally +44 2078193600
>               Or local access alternatives:
>                USA West Coast 4089616553
>                USA East Coast 7183541169
>                Germany (0)6950070811
>                Finland (0)969379595
>                Australia 0282239343
>
> Mario
>
> +-----------------------------------------------------------------------
> +
> |Mario Antonioletti:EPCC,JCMB,The King's Buildings,Edinburgh EH9 3JZ.
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> |Tel:0131 650 5141|mario at epcc.ed.ac.uk|http://www.epcc.ed.ac.uk/~mario/
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