On 3/7/11 10:27 AM, MilleBii wrote:
Randomly I now seem to get this error in production where it was working
fine for more than a year....
java.lang.NullPointerException
at
org.apache.nutch.searcher.FetchedSegments.getSummary(FetchedSegments.java:248)
at
org.apache.nutch.searcher.FetchedSegments$SummaryTask.call(FetchedSegments.java:63)
at
org.apache.nutch.searcher.FetchedSegments$SummaryTask.call(FetchedSegments.java:53)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:636)
+ for some queries, the first hit pages are fine and suddently it stops and
I get a blank page, for some I get it on the query
+ I checked the query with Luke. Looked fine
+ the preceding bean call in search.jsp (bean.search(query, start +
hitsToRetrieve, hitsPerSite, "site", sort, reverse); did not generate any
exception as far as I can judge.
What can be the cause of that ? how to debug that one ?
I'm using Nutch1.0.
One of your segments may be corrupt - usually this means it's either not
fetched, or not parsed, or truly corrupt (or missing). The expected list
of valid segments is the list of segment names that was used to produce
the index - segment names are recorded in Lucene indexes. You could
open all indexes (e.g. with Luke) and see what are the top terms in the
"segment" field.
--
Best regards,
Andrzej Bialecki <><
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