[ckan-dev] Error running solr in a container

[David Read]

Derek,

Where did you get the idea ckan only supports solr v3.6? Because
wherever it is, it needs fixing.

I think most people run SOLR v4 and several are on v5.
e.g. https://github.com/ckan/ckan/issues/2318

Dave

On 25 May 2016 at 10:55, Derek Hohls <dhohls at csir.co.za> wrote:
> Hi
>
> Hope the list can help with this problem...
>
> I have setup and run a full CKAN install without problems in a VM.
>
> Now I am trying to run solr in a separate container.  I have done this,
> using the Docker image from https://hub.docker.com/r/idguk/docker-solr/ (the
> official solr Docker could not be used as it does not support the very old
> version - 3.6 -  which is used by CKAN). The Docker is linked, via the "-v"
> option, to the `schema.xml` file sourced from
> `python-ckan_2.5-trusty_amd64.deb`.
>
> However, calling:
>
>     ckan db init
>
> triggers off an error; specifically this:
>
> Traceback (most recent call last):
>   File "/usr/lib/ckan/default/src/ckan/ckan/lib/search/common.py", line 51,
> in is_available
>     conn.query("*:*", rows=1)
>   File
> "/usr/lib/ckan/default/local/lib/python2.7/site-packages/solr/core.py", line
> 703, in query
>     return self.select(*args, **params)
>   File
> "/usr/lib/ckan/default/local/lib/python2.7/site-packages/solr/core.py", line
> 798, in __call__
>     xml = self.raw(**params)
>   File
> "/usr/lib/ckan/default/local/lib/python2.7/site-packages/solr/core.py", line
> 823, in raw
>     rsp = conn._post(self.selector, request, conn.form_headers)
>   File
> "/usr/lib/ckan/default/local/lib/python2.7/site-packages/solr/core.py", line
> 639, in _post
>     return check_response_status(self.conn.getresponse())
>   File
> "/usr/lib/ckan/default/local/lib/python2.7/site-packages/solr/core.py", line
> 1097, in check_response_status
>     raise ex
>
> On checking the `solr/core.py` file, it seems as if its the call to
> `solr/select/` that triggers the issue.
>
> Access via a browser to this URL (the container version of solr) shows a
> Java error:
>
> java.lang.NullPointerException
>     at org.apache.solr.servlet.SolrServlet.doGet(SolrServlet.java:92)
>     at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
>     at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
>     at
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
>     at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1221)
>     at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:306)
>     at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
>     at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399)
>     at
> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
>     at
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
>     at
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
>     at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450)
>     at
> org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
>     at
> org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
>     at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
>     at org.mortbay.jetty.Server.handle(Server.java:326)
>     at
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
>     at
> org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928)
>     at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
>     at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
>     at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
>     at
> org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228)
>     at
> org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
>
> But in the VM-version of solr, the same call generates an XML document:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <response>
>     <lst name="responseHeader">
>     <int name="status">0</int>
>     <int name="QTime">1</int>
>     <lst name="params"/></lst>
>     <result name="response" numFound="0" start="0"/>
> </response>
>
> I'd appreciate if anyone could highlight what I have missed in the
> configuration that could cause this error.
>
> Thanks
> Derek
>
>
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