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https://issues.apache.org/jira/browse/NUTCH-569?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lewis John McGibbney updated NUTCH-569:
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Fix Version/s: 1.7
> Protocol plugins should report progress to the fetcher
> ------------------------------------------------------
>
> Key: NUTCH-569
> URL: https://issues.apache.org/jira/browse/NUTCH-569
> Project: Nutch
> Issue Type: Improvement
> Components: fetcher
> Affects Versions: 1.0.0
> Reporter: Andrzej Bialecki
> Priority: Minor
> Fix For: 1.7
>
>
> When downloading very large files over slow connections, protocol plugins
> spend long time in Protocol.getProtocolOutput(...). This sometimes leads to a
> timeout in Fetcher / Fetcher2, with the message "aborting with hung threads".
> Protocol plugins should periodically notify their caller about progress. In a
> situation when the call to getProtocolOutput takes very long time to return,
> this will help the caller to determine whether the wait is justified.
> Preferably, the callback interface should allow the monitoring of not only
> the binary progress / no-progress, but also the download speed, so that the
> caller could terminate slow connections. E.g.
> {noformat}
> interface ProtocolReporter {
> void progress(long bytesDownloaded);
> }
> {noformat}
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