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https://issues.apache.org/jira/browse/SOLR-14138?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17001774#comment-17001774
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Jan Høydahl commented on SOLR-14138:
------------------------------------

+1
I recently missed some Jetty logging when debugging SSL handshake problems and 
having jetty logs around would help.

Is there a way we can control enabling jetty request log through an env var 
instead of having to edit xml?

> Fix commented-out RequestLog in jetty.xml to use non-deprecated class
> ---------------------------------------------------------------------
>
>                 Key: SOLR-14138
>                 URL: https://issues.apache.org/jira/browse/SOLR-14138
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Robert Muir
>            Priority: Major
>
> Currently the jetty request logging is disabled (commented out). 
> But it can be useful, e.g. since it uses a standard logging format and there 
> are tools to analyze it by default. Also it can be used to detect some 
> attacks not otherwise logged anywhere else, since they don't make it to solr 
> servlet: requests blocked at the jetty level (invalid/malformed requests, 
> ones filtered by jetty IP filtering, etc).
> We should switch it from the deprecated NCSARequestLog class, instead to use 
> the CustomRequestLog with either NCSA_FORMAT or EXTENDED_NCSA_FORMAT.
> {quote}
> Deprecated.
> use CustomRequestLog given format string 
> CustomRequestLog.EXTENDED_NCSA_FORMAT with a RequestLogWriter
> {quote}



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