Hoss Man created SOLR-7984:
------------------------------
Summary: totally bogus and missleading "no default request handler
is registered" logged by RequestHandlers
Key: SOLR-7984
URL: https://issues.apache.org/jira/browse/SOLR-7984
Project: Solr
Issue Type: Bug
Reporter: Hoss Man
As noted on the user list by Scott Hollenbeck the following warning can be
logged by solr...
bq. no default request handler is registered (either '/select' or 'standard')
...even if there is both a handler named "standard" and a handler (in his case
named "pinkPony") defined as default="true".
The code in question appears to be total nonsense...
{code}
if(!handlers.alias( "/select","")){
if(!handlers.alias( "standard","")){
log.warn("no default request handler is registered (either '/select' or
'standard')");
}
}
{code}
* PluginBag.alias is not documented, but appears to be a mutating operation
that _adds_ an alias if and only if the first arg is aname of something that
exists, and the second arg is a name that does not already exist -- returning
true if the alias is added
* if an alias already exists with the (default) name "" (which
initHandlersFromConfig takes care of registring before this code) then neither
of these can be made the new default.
* just because neither of these aren't made the default here, doesn't mean
there isn't already a default handler -- it actually means the exact oposite
* if the goal was to log an error when there is no default, then that should
have just been checked directly
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