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https://issues.apache.org/jira/browse/NUTCH-1746?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13960493#comment-13960493
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Greg Padiasek edited comment on NUTCH-1746 at 4/5/14 3:46 AM:
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This a tgz file split in 3 chunks due to the JIRA attachment size limit of 10MB.
I use domain-urlfilter.txt (in the attached and split file). I also tried
regex-urlfilter.txt but with regex the memory usage was even higher because
each line was compiled for expression evaluation.
bq. I wonder also if you have tried this with Automaton urlfilter?
No, I have not.
was (Author: gregp):
This a tgz file split in 3 chunks due to the JIRA attachment size limit of 10MB.
> OutOfMemoryError in Mappers
> ---------------------------
>
> Key: NUTCH-1746
> URL: https://issues.apache.org/jira/browse/NUTCH-1746
> Project: Nutch
> Issue Type: Bug
> Components: generator, injector
> Affects Versions: 1.7
> Environment: Nutch running in local mode with 4M+ domains in
> domain-urlfilter.txt
> Reporter: Greg Padiasek
> Attachments: Generator.patch, Injector.patch, domain-urlfilter-aa,
> domain-urlfilter-ab, domain-urlfilter-ac
>
>
> Initially I found that Generator was throwing OutOfMemoryError exception no
> matter how much RAM I allocated to JVM. I fixed the problem by moving
> URLFilters, URLNormalizers and ScoringFilters to top-level class as
> singletons and re-using them in all Generator mapper instances.
> Then I found the same problem in Injector and applied analogical fix.
> Now it seems that this issue may be common in all Nutch Mapper
> implementations.
> I was wondering if it would it be possible to integrate this kind of change
> in the upstream code base and potentially update all vulnerable Mapper
> classes.
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