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From Doğacan Güney (JIRA) <>
Subject [jira] Commented: (NUTCH-392) OutputFormat implementations should pass on Progressable
Date Fri, 01 Jun 2007 10:54:15 GMT


Doğacan Güney commented on NUTCH-392:

I think it is okay to allow BLOCK compression for linkdb, crawldb, crawl_*, content, parse_data.
Because I don't think that people will need fast random-access on anything but parse_text.

I agree that we need to test performance impact of BLOCK compression before committing such
a change. Unfortunately, our  setup doesn't include BLOCK compression right now. I will try
to test it and report some results once I get the chance.

PS: Compressing content will not have significant savings right now since it is already compressed
internally but once content stops doing that I think there will be _huge_ savings there. 

> OutputFormat implementations should pass on Progressable
> --------------------------------------------------------
>                 Key: NUTCH-392
>                 URL:
>             Project: Nutch
>          Issue Type: New Feature
>          Components: fetcher
>            Reporter: Doug Cutting
>            Assignee: Andrzej Bialecki 
>             Fix For: 1.0.0
>         Attachments: NUTCH-392.patch
> OutputFormat implementations should pass the Progressable they are passed to underlying
SequenceFile implementations.  This will keep reduce tasks from timing out when block writes
are slow.  This issue depends on

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