István Fajth created HDDS-9733:
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Summary: DatanodeDetails should only contain those ports the DN
actually listens to
Key: HDDS-9733
URL: https://issues.apache.org/jira/browse/HDDS-9733
Project: Apache Ozone
Issue Type: Improvement
Reporter: István Fajth
Assignee: István Fajth
Currently the port list in DatanodeDetails is built up based on configuration,
and based on the datanode.id file. If ever a port was saved to the datanode.id,
it will be part of the DatanodeDetails object, even if configuration does not
allow the existence of that port.
This is a problem with HTTP and HTTPS ports, that are also used to render
Datanode WebUI links on the SCM's WebUI for example.
As DNs never remove these ports from the port list (because old values are read
from datanode.id file), it is impossible to tell if a DN listens on HTTP or
HTTPS port or in some cases both.
It would be nice to list only the active ports of the Datanode instead of all
possibilities we know about, as atm there can be cases, where the DN has
HTTPS_ONLY as the ozone.http.policy, while listing HTTP and HTTPS ports in the
DatanodeDetails. I have not checked, but it might be that the port value can
also contain an obsolete number from an old config, if it is not used in the
current config.
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