[Handle-info] list handles question

[Evguenia Krylova <evguenia.krylova@doit.wisc.edu>]

We have a naming authority of 1711 and two sub-naming authorities 1711.DL and 1711.WEB. 
1711 contains a small set of administrative handles with 1711.DL and 1711.WEB containing 
about 10800 and 2000 handles respectively.

We are in the process of migrating from Handle 6.2.5-02 to 7.3.1. 
When list handles request is issued to a primary handle server v6 for 1711, only handle under 
1711 namespace are listed and so is the case for 1711.DL and 1711.WEB.

When running handle server v7.3.1, I see that list handle requests to 1711 is attempting to list 
all handles from 1711 and from 1711.DL and 1711.WEB. This results in out of memory exception. 
We are running with  the following Java memory options: -Xms512 -Xmx512 -XX:MaxPermSize=512

We are using Postgres for the data storage layer with the database layout suggested in the 
Handle documentation. 

What is the correct behavior of the list handles operation? RFC3652 does not provide the specifics 
on how handles should be listed for naming authorities with sub-naming authorities. 

Thank you,
Ev

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