need help for two nutch questions

[ianwong <yi...@hotmail.com>]

I am using nutch 0.9.  Can anyone reply me with some clues for following
questions? 

1. I want to know how can I set a timeout for querying query server. So far, 
I have three query server. If any one is down, the web search page has to 
wait a long time until a exception thrown. Is any method to check connection 
status of query server before querying or set a timeout to query server? if 
it is failed to connect, then ignore that server. I noticed the 
ipc.client.timeout has replaced by ping in the Hadoop latest version, then 
how nutch 0.9 handle search timeout??

2. Sometimes, I get same follows exception from query client.

[ERROR] 15:56:57 Exception in method: handleRequest Exception is: null
java.lang.NullPointerException
        at java.util.Hashtable.get(Hashtable.java:334)
        at org.apache.hadoop.ipc.Client.getConnection(Client.java:519)
        at org.apache.hadoop.ipc.Client.call(Client.java:493)
        at org.apache.hadoop.ipc.RPC.call(RPC.java:265)
        at 
org.apache.nutch.searcher.DistributedSearch$Client.getSummary(DistributedSearch.java:334)
        at 
org.apache.nutch.searcher.NutchBean.getSummary(NutchBean.java:344)

3. In addtion,where is the log file for nutch query server? I can not find
any errors or 
exception info in the nutchhome/logs/hadoop.log?

Thank you
Ian
-- 
View this message in context: http://www.nabble.com/need-help-for-two-nutch-questions-tp21441507p21441507.html
Sent from the Nutch - User mailing list archive at Nabble.com.