[jira] Closed: (NUTCH-211) FetchedSegments leave readers open

["Sami Siren (JIRA)" <ji...@apache.org>]

     [ http://issues.apache.org/jira/browse/NUTCH-211?page=all ]

Sami Siren closed NUTCH-211.
----------------------------


> FetchedSegments leave readers open
> ----------------------------------
>
>                 Key: NUTCH-211
>                 URL: http://issues.apache.org/jira/browse/NUTCH-211
>             Project: Nutch
>          Issue Type: Bug
>    Affects Versions: 0.8
>            Reporter: Stefan Groschupf
>         Assigned To: Stefan Groschupf
>            Priority: Critical
>             Fix For: 0.8
>
>         Attachments: closeable160206.patch, closeFetchSegments.patch
>
>
> I have a case here where the NutchBean is instantiated more than once, however I do cache the nutch bean, but in some situations the bean needs to re created. The problem is the  FetchedSegments leaves open all reads it uses. So a nio Exception is thrown as soon I try to create the NutchBean again. 
> I would suggest to add a close method to  FetchedSegments and all involved objects to be able cleanly shutting down the NutchBean.
> Any comments? Would a patch be welcome?
> Caused by: java.nio.channels.ClosedChannelException
> at sun.nio.ch.FileChannelImpl.ensureOpen(FileChannelImpl.java:89)
> at sun.nio.ch.FileChannelImpl.position(FileChannelImpl.java:272)
> at org.apache.nutch.fs.LocalFileSystem$LocalNFSFileInputStream.seek(LocalFileSystem.java:83)
> at org.apache.nutch.fs.NFSDataInputStream$Checker.seek(NFSDataInputStream.java:66)
> at org.apache.nutch.fs.NFSDataInputStream$PositionCache.seek(NFSDataInputStream.java:162)
> at org.apache.nutch.fs.NFSDataInputStream$Buffer.seek(NFSDataInputStream.java:191)
> at org.apache.nutch.fs.NFSDataInputStream.seek(NFSDataInputStream.java:241)
> at org.apache.nutch.io.SequenceFile$Reader.seek(SequenceFile.java:403)
> at org.apache.nutch.io.MapFile$Reader.seek(MapFile.java:329)
> at org.apache.nutch.io.MapFile$Reader.get(MapFile.java:374)
> at org.apache.nutch.mapred.MapFileOutputFormat.getEntry(MapFileOutputFormat.java:76)
> at org.apache.nutch.searcher.FetchedSegments$Segment.getEntry(FetchedSegments.java:93)
> at org.apache.nutch.searcher.FetchedSegments$Segment.getParseText(FetchedSegments.java:84)
> at org.apache.nutch.searcher.FetchedSegments.getSummary(FetchedSegments.java:147)
> at org.apache.nutch.searcher.NutchBean.getSummary(NutchBean.java:321)

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