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https://issues.apache.org/jira/browse/NUTCH-2911?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17451246#comment-17451246
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ASF GitHub Bot commented on NUTCH-2911:
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sebastian-nagel commented on pull request #708:
URL: https://github.com/apache/nutch/pull/708#issuecomment-982823043
Thanks @prakharchaube, good catch. The compilation fails with
`Fetcher.java:440: error: unreported exception InterruptedException; must be
caught or declared to be thrown` - could you update the PR to catch the
exception thrown by the
[cleanup](https://hadoop.apache.org/docs/r3.3.1/api/org/apache/hadoop/mapreduce/Mapper.html#cleanup-org.apache.hadoop.mapreduce.Mapper.Context-)
method. Thanks!
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> Add cleanup call in Fetcher.java
> --------------------------------
>
> Key: NUTCH-2911
> URL: https://issues.apache.org/jira/browse/NUTCH-2911
> Project: Nutch
> Issue Type: Improvement
> Components: fetcher
> Reporter: Prakhar Chaube
> Priority: Minor
> Labels: improvement
>
> Fetcher's inner class, FetcherRun overrides Hadoop Mapper's run().
> Even though Nutch's FetcherRun doesn't need an explicit call the Mapper's
> cleanup() (Which is a blank function), it would increase the readability and
> completeness of the run Method to do so.
> Ideally, every implementation of Mapper is supposed to do the following tasks:
> 1. Perform Setup
> 2. Call map on the data set
> 3. Perform cleanups.
> Moreover, in case a custom Fetcher is written extending Fetcher.java cleanup
> could get easily missed out.
> PR for Fix: [here|https://github.com/apache/nutch/pull/708]
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