On 2017-08-01 15:45, Mostafa Mahdieh wrote:
Hi,
I'm using jackrabbit oak as the content repository of a document management
system product. Currently there is no need to scale out, therefore I'm
using jackrabbit oak in a single node environment. However, I'm
experiencing issues related to clustering and lease time, such as the
following exception which is appearing all over my tomcat logs:
WARN: Background operation failed:
org.apache.jackrabbit.oak.plugins.document.DocumentStoreException: This oak
instance failed to update the lease in time and can therefore no longer
access this DocumentNodeStore.
After some research, It seems that there is no way to use jackrabbit oak
forcing it to use a single node and not having any concerns related to
clustering.
...
Well, a single node is just a very small cluster :-).
If you see the message above, apparently your connection to the
persistence (is it Mongo or RDB?) isn't reliable, or the DB itself is
flaky. The log files should show you more.
That said, you can use Oak with filesytem-based persistence as well, in
which case this class of issues would go away (but then you'd need to
migrate the persistence if later you decide you need to scale to a real
cluster)
Best regards, Julian
