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From "Andrzej Bialecki (JIRA)" <>
Subject [jira] Commented: (NUTCH-392) OutputFormat implementations should pass on Progressable
Date Fri, 01 Jun 2007 14:42:16 GMT


Andrzej Bialecki  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.

LinkDb is accessed on-line randomly through LinkDbInlinks, when users request anchors. Similarly,
parse_data is accessed when requesting "explain", and may be also accessed to retrieve other
hit metadata. Content is accessed randomly when displaying cached preview. I think in all
these cases we can use at most RECORD compression, or NONE.

> 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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