Sebastian Nagel created NUTCH-2572:
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             Summary: HostDb: updatehostdb does not set values
                 Key: NUTCH-2572
                 URL: https://issues.apache.org/jira/browse/NUTCH-2572
             Project: Nutch
          Issue Type: Bug
          Components: hostdb
    Affects Versions: 1.15
            Reporter: Sebastian Nagel
             Fix For: 1.15


{noformat}
% bin/nutch readdb crawl/crawldb -stats -sort
...
status 1 (db_unfetched):        3
   nutch.apache.org :   3
status 2 (db_fetched):  2
   nutch.apache.org :   2
status 6 (db_notmodified):      34
   nutch.apache.org :   34
CrawlDb statistics: done

% bin/nutch updatehostdb -hostdb  crawl/hostdb -crawldb crawl/crawldb
UpdateHostDb: hostdb: crawl/hostdb
UpdateHostDb: crawldb: crawl/crawldb
UpdateHostDb: starting at 2018-04-23 13:50:33
UpdateHostDb: finished at 2018-04-23 13:50:35, elapsed: 00:00:01

% bin/nutch readhostdb crawl/hostdb -get nutch.apache.org
ReadHostDb: get: nutch.apache.org
0       0       0       0       0       0       0       0       0       0       
0.0     1970-01-01 01:00:00
{noformat}

Although a HostDb record is added for "nutch.apache.org", all expected values 
(number of fetched/unfetched/... pages, fetch time min/max/average/percentiles, 
etc.) are empty or zero.



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