[ https://issues.apache.org/jira/browse/NUTCH-1422?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sebastian Nagel updated NUTCH-1422: ----------------------------------- Attachment: NUTCH-1422_redir_notmodified_log.txt > reset signature for redirects > ----------------------------- > > Key: NUTCH-1422 > URL: https://issues.apache.org/jira/browse/NUTCH-1422 > Project: Nutch > Issue Type: Bug > Components: crawldb, fetcher > Affects Versions: 1.4 > Reporter: Sebastian Nagel > Fix For: 1.6 > > Attachments: NUTCH-1422_redir_notmodified_log.txt > > > In a long running continuous crawl with Nutch 1.4 URLs with a HTTP redirect > (http.redirect.max = 0) are kept as not-modified in the CrawlDb. Short > protocol (cf. attached dumped segment / CrawlDb data): > 2012-02-23 : injected > 2012-02-24 : fetched > 2012-03-30 : re-fetched, signature changed > 2012-04-20 : re-fetched, redirected > 2012-04-24 : in CrawlDb as db_notmodified, still indexed with old content! > The signature of a previously fetched document is not reset when the URL/doc > is changed to a redirect at a later time. CrawlDbReducer.reduce then sets the > status to db_notmodified because the new signature in with fetch status is > identical to the old one. > Possible fixes (??): > * reset the signature in Fetcher > * handle this case in CrawlDbReducer.reduce -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira