I am seeing the following exception in solr logs after regular intervals, we
are not firing any query to have such error, what could be causing this?
ERROR - 2013-12-14 05:35:52.722; org.apache.solr.common.SolrException;
org.apache.solr.common.SolrException: org.apache.solr.search.SyntaxError:
Cannot parse 'docKey:()': Encountered " ")" ") "" at line 1, column 8.
Was expecting one of:
<NOT> ...
"+" ...
"-" ...
<BAREOPER> ...
"(" ...
"*" ...
<QUOTED> ...
<TERM> ...
<PREFIXTERM> ...
<WILDTERM> ...
<REGEXPTERM> ...
"[" ...
"{" ...
<LPARAMS> ...
<NUMBER> ...
<TERM> ...
"*" ...
at
org.apache.solr.handler.component.QueryComponent.prepare(QueryComponent.java:147)
