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https://issues.apache.org/jira/browse/NUTCH-1714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13987551#comment-13987551
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Alparslan Avcı commented on NUTCH-1714:
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Hi [~jnioche],
I do not know if you have tested the patch, but it fixes the problem with last
update. The reason for the _readdb_ problem is that it tries to get all fields
from _webpage_ table, and it uses _WebPage._ALL_FIELDS_ array to achieve this.
However, this array also contains ___g__dirty_ field which is used to save
dirty fields of the persistent class. This field is not stored in database.
Thus, when db is queried with this field, no results will be returned.
In the patch I have removed ___g__dirty_ field directly from the fields sent to
the query, since it is always at the first positon of the __ALL_FIELDS_ array.
This will fix the problem. However, I will also send a mail to dev@gora and
discuss if we should remove this field from persistent class' __ALL_FIELDS_
array. Then, we can use _WebPage._ALL_FIELDS_ directly in here.
Thanks for your comments.
> Nutch 2.x upgrade to Gora 0.4
> -----------------------------
>
> Key: NUTCH-1714
> URL: https://issues.apache.org/jira/browse/NUTCH-1714
> Project: Nutch
> Issue Type: Improvement
> Reporter: Alparslan Avcı
> Assignee: Alparslan Avcı
> Fix For: 2.3
>
> Attachments: NUTCH-1714.patch, NUTCH-1714_NUTCH-1714_v2_v3.patch,
> NUTCH-1714v2.patch, NUTCH-1714v4.patch, NUTCH-1714v5.patch
>
>
> Nutch upgrade for GORA_94 branch has to be implemented. We can discuss the
> details in this issue.
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