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https://issues.apache.org/jira/browse/OAK-10143?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Miguel Moquillon updated OAK-10143:
-----------------------------------
Description:
With some old jackrabbit 2 repositories, the
{code:java}
JCR_HOME/repository/namespaces/ns_reg.properties{code}
file contains as namespace an empty string instead of the predefined name
_empty.key_ for empty namespace.
See attachments as an example.
In such circumstances, the upgrade of the Jackrabbit 2 JCR to the Oak one fails
because the preconditions of a non null or a non empty property name isn't
satisfied (checked by {{{}AbstractNodeState#checkValidName(String){}}}).
A way to avoid this is to check the emptiness of the {{prefixHint}} variable in
{{RepositoryUpgrade#copyNamespaces(...)}} like this:
{code:java}
if (".empty.key".equals(prefixHint) || prefixHint.isEmpty()) {
prefix = ""; // the default empty mapping is not stored
} else {
prefix = addCustomMapping(namespaces, uri, prefixHint);
}{code}
> Issue when oak-upgrade fetch all the namespaces from very old jackrabbit 2
> repository
> -------------------------------------------------------------------------------------
>
> Key: OAK-10143
> URL: https://issues.apache.org/jira/browse/OAK-10143
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: upgrade
> Affects Versions: 1.48.0
> Reporter: Miguel Moquillon
> Priority: Major
> Attachments: ns_reg.properties
>
>
> With some old jackrabbit 2 repositories, the
> {code:java}
> JCR_HOME/repository/namespaces/ns_reg.properties{code}
> file contains as namespace an empty string instead of the predefined name
> _empty.key_ for empty namespace.
> See attachments as an example.
> In such circumstances, the upgrade of the Jackrabbit 2 JCR to the Oak one
> fails because the preconditions of a non null or a non empty property name
> isn't satisfied (checked by {{{}AbstractNodeState#checkValidName(String){}}}).
> A way to avoid this is to check the emptiness of the {{prefixHint}} variable
> in {{RepositoryUpgrade#copyNamespaces(...)}} like this:
> {code:java}
> if (".empty.key".equals(prefixHint) || prefixHint.isEmpty()) {
> prefix = ""; // the default empty mapping is not stored
> } else {
> prefix = addCustomMapping(namespaces, uri, prefixHint);
> }{code}
>
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