Allow to disable referential integrity checking for workspace
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Key: JCR-954
URL: https://issues.apache.org/jira/browse/JCR-954
Project: Jackrabbit
Issue Type: New Feature
Components: core
Reporter: Przemo Pakulski
Fix For: 1.4
Some operations like clone, remove operating on huge subtree of nodes requires
a lot of memory. To copy, clone, remove subtree all nodes are loaded into
transient spaces. It allows such operations to be transactional, from other
side it requires a lot of heap size and this memory size is directly dependent
on the size of subtree (number of nodes). In result of this in some cases it is
impossible to make such operations in one step. In our environment sometimes 1
GB of java heap is not enough to succesfully clone subtree from one workspace
to another.
You can always clone (copy, remove) tree in chunks, but if you have references
between subtrees such approach fails. Possibilty of temporary disabling
referential integrity checking for experienced JCR user could be very usefull
then.
Another use case is to allow to clone selected subtrees of the whole structure
between worskpaces. In our application we need to clone only some selected
subtrees from one workspace to another. But we can not do that because of
existing references. We need to clone the whol estructure first, then remove
all unwanted nodes, which is really time expensive and memory consuming.
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