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https://issues.apache.org/jira/browse/DIRSERVER-958?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Emmanuel Lecharny updated DIRSERVER-958:
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Affects Version/s: 1.5.0
Fix Version/s: pre-2.0
Postponed to 2.0
> DNs are consumming a lot of space when stored as String in the backend
> ----------------------------------------------------------------------
>
> Key: DIRSERVER-958
> URL: https://issues.apache.org/jira/browse/DIRSERVER-958
> Project: Directory ApacheDS
> Issue Type: Improvement
> Affects Versions: 1.5.0
> Reporter: Emmanuel Lecharny
> Fix For: pre-2.0
>
>
> We are stroring DNs as normalized String into the backend. This is
> overkilling, as those normalized Strings can be very long :
> uid=user.3,ou=People,dc=example,dc=com
> will be stored as :
> 0.9.2342.19200300.100.1.1=user.2, 2.5.4.11=People,
> 0.9.2342.19200300.100.1.25=example, 0.9.2342.19200300.100.1.25=com
> Using OID might be good to guarantee unicity, but storing OID in this case
> stores 85 chars instead of 9
> We have other options :
> 1) use the alias instead of the OID. Of course, if an AttributeType does not
> have an alias, we will use the OID
> 2) use the internal form of an OID, which is shortest
> It will have impact on many parts of the server, but at the end, performances
> will also be increased, as we will have less GC (GC represents 30% of the CPU
> consumed on an heavy loaded server) and we will also be able to increase the
> cache with the same memory size.
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