Hi ,
I have a few questions:
1) What is the difference between eNode and dNode? I have read that E-nodes
are required to evaluate XQuery programs, XCC/XDBC requests, WebDAV requests,
and other server requests.and dNodes are those which directly talks with the
database/forest. It is also told that if the request does not need any forest
data to complete, then an e-node request is evaluated entirely on the e-node. I
do not understand how this is possible!! If eNode is meant for XQuery
evaluation and XQuery needs an XML to process, then every eNode request should
talk to dNode. Is there any caching mechanism? It will be great if anybody can
explain this to me?
2) There are two failover mechanism explained in the documentation. Forest
level failover and eNode level failover. It seems that forest data level
failover is not handled by Marklogic. Like if the filesystem crashes, is there
anyway by which Marklogic server replicates the forest to other hosts in same
or different cluster? If this feature is not presently supported, then when can
we expect this on the roadmap?
Thanks in advance.
regards,
Saptarshi
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