Larry McCay created KNOX-711:
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Summary: Global Rewrite Rules for a Topology are Problematic
Key: KNOX-711
URL: https://issues.apache.org/jira/browse/KNOX-711
Project: Apache Knox
Issue Type: Bug
Components: Server
Reporter: Larry McCay
Fix For: 0.9.0
Due to the fact that the rewrite rules for a topology are global, matching
patterns that are more generic may cause indeterminate URL rewriting. This is
more of a problem for proxying UIs than it is for services but since the
patterns are up to the discretion of the developer they could certainly also
apply to service definitions.
For instance, the JOBHISTORY UI rewrite.xml contains a pattern like
"/static/**". This pattern will match an root relative URLs that start with
"static". Since other hadoop UIs that may be proxied through the same topology
will reference similar resources, the URL rewriting may match the pattern from
the wrong application and interject the service/UI name into the URL which will
result in 404's.
This has been observed for the HBase UI when the JOBHISTORY UI is also in the
same topology.
The workaround for this issue is to deploy separate topologies for UIs that
have overlapping matching patterns.
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