Github user kansal commented on the pull request:
https://github.com/apache/cloudstack/pull/685#issuecomment-130539282
@kishankavala The current implementation of the createSSHKeyPair checks
for the keypair-name in the table ssh_keypairs and if that name exists it will
return "A keypair with the <name> exists." But at the time of inserting the
keypairs it will not insert the same key once again because of the UNIQUE
constraint that is added in the above commit. So In a way the duplication
problem is automatically checked.
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