Crawl crashes with java.io.IOException: already exists:
C:\nutch\crawl.intranet\oct18\db\webdb.new\pagesByURL
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Key: NUTCH-117
URL: http://issues.apache.org/jira/browse/NUTCH-117
Project: Nutch
Type: Bug
Versions: 0.7.1, 0.7, 0.6
Environment: Window 2000 P4 1.70GHz 512MB RAM
Java 1.5.0_05
Reporter: Stephen Cross
Priority: Critical
I started a crawl using the command line using nutch 0.7.1.
nutch-daemon.sh start crawl urls.txt -dir oct18 -threads 4 -depth 20
After crawling for over 15 hours the crawl crached with the following exception:
051019 050543 status: segment 20051019050438, 30 pages, 0 errors, 1589818
bytes, 48020 ms
051019 050543 status: 0.6247397 pages/s, 258.65167 kb/s, 52993.934 bytes/page
051019 050544 Updating C:\nutch\crawl.intranet\oct18\db
051019 050544 Updating for C:\nutch\crawl.intranet\oct18\segments\20051019050438
051019 050544 Processing document 0
051019 050544 Finishing update
051019 050544 Processing pagesByURL: Sorted 47 instructions in 0.02 seconds.
051019 050544 Processing pagesByURL: Sorted 2350.0 instructions/second
Exception in thread "main" java.io.IOException: already exists:
C:\nutch\crawl.intranet\oct18\db\webdb.new\pagesByURL
at org.apache.nutch.io.MapFile$Writer.<init>(MapFile.java:86)
at
org.apache.nutch.db.WebDBWriter$CloseProcessor.closeDown(WebDBWriter.java:549)
at org.apache.nutch.db.WebDBWriter.close(WebDBWriter.java:1544)
at
org.apache.nutch.tools.UpdateDatabaseTool.close(UpdateDatabaseTool.java:321)
at
org.apache.nutch.tools.UpdateDatabaseTool.main(UpdateDatabaseTool.java:371)
at org.apache.nutch.tools.CrawlTool.main(CrawlTool.java:141)
This was on the 14th segement from the requested depth of 20. Doing a quick
Google on the exception brings up a few previous posts with the same error but
no definitive answer, seems to have been occuring since nutch 0.6.
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