HTTP Error 500 on "/admin/ping" request

[Steven White]

Hi Everyone,

I cannot figure out why I'm getting HTTP Error 500 off the following code:

    // Using: org.apache.wink.client
    String contentType = "application/atom+xml";
    URI uri = new URI("http://localhost:8983"; +
"/solr/db/admin/ping?wt=xml");
    Resource resource = client.resource(uri.toURL().toString());

    ClientResponse clientResponse = null;

    clientResponse =
resource.contentType(contentType ).accept(contentType ).get();

    clientResponse.getStatusCode();    // Gives back: 500

Here is the call stack I get back from the call (it's also the same in
solr.log):

ERROR - 2015-08-03 17:30:29.457; [   db]
org.apache.solr.common.SolrException; org.apache.solr.common.SolrException:
Bad contentType for search handler :application/atom+xml
request={wt=xml&q=solrpingquery&echoParams=all&distrib=false}
at
org.apache.solr.request.json.RequestUtil.processParams(RequestUtil.java:74)
at
org.apache.solr.util.SolrPluginUtils.setDefaults(SolrPluginUtils.java:167)
at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:140)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:2064)
at
org.apache.solr.handler.PingRequestHandler.handlePing(PingRequestHandler.java:254)
at
org.apache.solr.handler.PingRequestHandler.handleRequestBody(PingRequestHandler.java:211)
at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:143)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:2064)
at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:654)
at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:450)

INFO  - 2015-08-03 17:30:29.459; [   db] org.apache.solr.core.SolrCore;
[db] webapp=/solr path=/admin/ping params={wt=xml} status=400 QTime=6
ERROR - 2015-08-03 17:30:29.459; [   db]
org.apache.solr.common.SolrException; org.apache.solr.common.SolrException:
Ping query caused exception: Bad contentType for search handler
:application/atom+xml
request={wt=xml&q=solrpingquery&echoParams=all&distrib=false}
at
org.apache.solr.handler.PingRequestHandler.handlePing(PingRequestHandler.java:263)
at
org.apache.solr.handler.PingRequestHandler.handleRequestBody(PingRequestHandler.java:211)
at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:143)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:2064)
at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:654)
at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:450)
at java.lang.Thread.run(Thread.java:853)
Caused by: org.apache.solr.common.SolrException: Bad contentType for search
handler :application/atom+xml
request={wt=xml&q=solrpingquery&echoParams=all&distrib=false}
at
org.apache.solr.request.json.RequestUtil.processParams(RequestUtil.java:74)
at
org.apache.solr.util.SolrPluginUtils.setDefaults(SolrPluginUtils.java:167)
at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:140)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:2064)
at
org.apache.solr.handler.PingRequestHandler.handlePing(PingRequestHandler.java:254)
... 27 more
INFO  - 2015-08-03 17:30:29.461; [   db] org.apache.solr.core.SolrCore;
[db] webapp=/solr path=/admin/ping params={wt=xml} status=500 QTime=8
ERROR - 2015-08-03 17:30:29.462; [   db]
org.apache.solr.common.SolrException;
null:org.apache.solr.common.SolrException: Ping query caused exception: Bad
contentType for search handler :application/atom+xml
request={wt=xml&q=solrpingquery&echoParams=all&distrib=false}
at
org.apache.solr.handler.PingRequestHandler.handlePing(PingRequestHandler.java:263)
at
org.apache.solr.handler.PingRequestHandler.handleRequestBody(PingRequestHandler.java:211)
at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:143)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:2064)
at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:654)
at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:450)

If I use a browser plug-in Rest Client it works just fine.

My Java code works with other paths such as
"/solr/db/config/requestHandler?wt=xml" or
"/solr/db/schema/fieldtypes/?wt=xml" or "/solr/db/schema/fields/?wt=xml".

Yes, I did try other content types, the outcome is the same error.

I'm using the default ping handler:

  <requestHandler name="/admin/ping" class="solr.PingRequestHandler">
    <lst name="invariants">
      <str name="q">solrpingquery</str>
    </lst>
    <lst name="defaults">
      <str name="echoParams">all</str>
    </lst>
  </requestHandler>

Any clues / pointers why "/admin/ping" doesn't work but other query paths
do?

Thanks

Steve