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Comments for Document: RNS Specification 1.1
Author(s):M. Morgan, A. Grimshaw, O. Tatebe
Type:P-REC
Area:Architecture
Group:OGSA-Naming-WG
Public Comment End:23 May, 2010

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Comments:


Posted by: tatebe 2010-05-21 10:36:12rename semantics
We need to clarify the case such that the target entry exists when
renaming the entry name. In the POSIX, it will be atomically
replaced. If we follow the POSIX semantics, there is an undeterministic
condition when renaming multiple entries in a bulk operation. For
example, when there are two rename requests to the same target name,
both requests will succeed but the result is different depending on
which one is applied first.

I guess there are two possible solutions:

1. Do not follow the POSIX semantics. If the target entry exists,
rename fails with RNS Entry Exists Failure.

2. Fix the order of operations in bulk operations. If we assume
operations are processed in the sequence order provided by the
input argument.

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