Hi:
During a load test using Jmeter I get this error:
2007-01-31 09:27:47 StandardWrapperValve[jsp]: Servlet.service() para
servlet jsp lanzó excepción
java.lang.NullPointerException
at org.apache.nutch.searcher.DistributedSearch$Client.getSummary(
DistributedSearch.java:323)
at org.apache.nutch.searcher.NutchBean.getSummary(NutchBean.java
:349)
at org.apache.jsp.search_jsp._jspService(search_jsp.java:267)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java
:94)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(
JspServletWrapper.java:324)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(
JspServlet.java:292)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
...
007-01-31 09:27:47 StandardWrapperValve[jsp]: Servlet.service() para servlet
jsp lanzó excepción
java.io.IOException: no responses
at org.apache.hadoop.ipc.Client.call(Client.java:344)
at org.apache.hadoop.ipc.RPC.call(RPC.java:174)
at org.apache.nutch.searcher.DistributedSearch$Client.getDetails(
DistributedSearch.java:307)
at org.apache.nutch.searcher.NutchBean.getDetails(NutchBean.java
:338)
at org.apache.jsp.search_jsp._jspService(search_jsp.java:266)
The test was done using three machines, in the same lan segment, with this
configuration:
-Pentium 4 3.0GHz
-1GB RAM
-Jdk 1.5
-Tomcat 5
-linux 2.6 kernel.
-nutch-0.8
-hadoop-0.4.0
The first machine runs a "search-server" that loads a Nutch index of 20000
documents, about 20MB of disk space for the Lucene index. The second one
runs a tomcat that communicates with the "search-server" and the third one
runs jmeter.
The request that launches the exception takes about 60 seconds, while rest
take about 650ms. Sysstat indicates that first and second machine have the
CPU idle, close to 100%, no swapping and still lot of free memory.
As I can see that is related with the closed bug nutch-14 (
http://issues.apache.org/jira/browse/NUTCH-14).
Any help will be apreciated in order to solve this problem.
