Re: (ITS#6686) VLV overlay fails to handle multiple search operations per LDAP connection
Hi Howard,
Le mercredi 27 octobre 2010 15:03:36, Howard Chu a =E9crit :
sebastien.bahloul(a)gmail.com wrote:
> Full_Name: Sebastien Bahloul
> Version: HEAD
> OS: Linux RHEL 5
> URL:
> Submission from: (NULL) (109.197.176.10)
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> Hi,
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> I think there is a bug / limitation inside VLV implementation : it can
> not handle multiple search operation on a single connection. The first
> operation succeeds and next operations fail with the following message :
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> LDAP: error code 51 - Other sort requests already in progress
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> But I think this issue is more global. This implementation seems to be
> able to only handle a single VLV context per connection.
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Correct, that is by design.
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> If I am right, this is related with the indexing method of sort_conns
> structure which seems to be based only on the connection id. I suggest
> to implement a double indexing array by connection id / VLV context id.
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I have no interest in extending this. It would require much more overhead
to protect the slapd from getting overloaded by too many such requests.
In fact my suggestion was a question : I would like to contribute a patch t=
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add support for this way of using VLV. Is this feature extension as a doubl=
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indexed array an acceptable implementation from your point of vue ? To avoi=
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encountering such performance issues, I would add a new sssvlv parameter th=
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would authorize by default only a single VLV search request per connection.
Regards,
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Sebastien Bahloul
@: sebastien.bahloul(a)gmail.com