You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@nutch.apache.org by "Julien Nioche (JIRA)" <ji...@apache.org> on 2009/11/23 12:05:39 UTC
[jira] Created: (NUTCH-769) Fetcher to skip queues for URLS getting
repeated exceptions
Fetcher to skip queues for URLS getting repeated exceptions
-------------------------------------------------------------
Key: NUTCH-769
URL: https://issues.apache.org/jira/browse/NUTCH-769
Project: Nutch
Issue Type: Improvement
Components: fetcher
Reporter: Julien Nioche
Priority: Minor
As discussed on the mailing list (see http://www.mail-archive.com/nutch-user@lucene.apache.org/msg15360.html) this patch allows to clear URLs queues in the Fetcher when more than a set number of exceptions have been encountered in a row. This can speed up the fetching substantially in cases where target hosts are not responsive (as a TimeoutException would be thrown) and limits cases where a whole Fetch step is slowed down because of a few queues.
by default the parameter fetcher.max.exceptions.per.queue has a value of -1 and is deactivated.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Commented: (NUTCH-769) Fetcher to skip queues for URLS
getting repeated exceptions
Posted by "Andrzej Bialecki (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/NUTCH-769?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12783245#action_12783245 ]
Andrzej Bialecki commented on NUTCH-769:
-----------------------------------------
The patch contains a new method, checkExceptionThreshold,which seems to do the right thing, but this method is never used in Fetcher. I think the idea was to call it in FetchItemQueues.finishItem()?
> Fetcher to skip queues for URLS getting repeated exceptions
> -------------------------------------------------------------
>
> Key: NUTCH-769
> URL: https://issues.apache.org/jira/browse/NUTCH-769
> Project: Nutch
> Issue Type: Improvement
> Components: fetcher
> Reporter: Julien Nioche
> Priority: Minor
> Attachments: NUTCH-769.patch
>
>
> As discussed on the mailing list (see http://www.mail-archive.com/nutch-user@lucene.apache.org/msg15360.html) this patch allows to clear URLs queues in the Fetcher when more than a set number of exceptions have been encountered in a row. This can speed up the fetching substantially in cases where target hosts are not responsive (as a TimeoutException would be thrown) and limits cases where a whole Fetch step is slowed down because of a few queues.
> by default the parameter fetcher.max.exceptions.per.queue has a value of -1 and is deactivated.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Closed: (NUTCH-769) Fetcher to skip queues for URLS getting
repeated exceptions
Posted by "Andrzej Bialecki (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/NUTCH-769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andrzej Bialecki closed NUTCH-769.
-----------------------------------
Resolution: Fixed
Fix Version/s: 1.1
Assignee: Andrzej Bialecki
> Fetcher to skip queues for URLS getting repeated exceptions
> -------------------------------------------------------------
>
> Key: NUTCH-769
> URL: https://issues.apache.org/jira/browse/NUTCH-769
> Project: Nutch
> Issue Type: Improvement
> Components: fetcher
> Reporter: Julien Nioche
> Assignee: Andrzej Bialecki
> Priority: Minor
> Fix For: 1.1
>
> Attachments: NUTCH-769-2.patch, NUTCH-769.patch
>
>
> As discussed on the mailing list (see http://www.mail-archive.com/nutch-user@lucene.apache.org/msg15360.html) this patch allows to clear URLs queues in the Fetcher when more than a set number of exceptions have been encountered in a row. This can speed up the fetching substantially in cases where target hosts are not responsive (as a TimeoutException would be thrown) and limits cases where a whole Fetch step is slowed down because of a few queues.
> by default the parameter fetcher.max.exceptions.per.queue has a value of -1 and is deactivated.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (NUTCH-769) Fetcher to skip queues for URLS getting
repeated exceptions
Posted by "Julien Nioche (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/NUTCH-769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Julien Nioche updated NUTCH-769:
--------------------------------
Attachment: NUTCH-769-2.patch
> Fetcher to skip queues for URLS getting repeated exceptions
> -------------------------------------------------------------
>
> Key: NUTCH-769
> URL: https://issues.apache.org/jira/browse/NUTCH-769
> Project: Nutch
> Issue Type: Improvement
> Components: fetcher
> Reporter: Julien Nioche
> Priority: Minor
> Attachments: NUTCH-769-2.patch, NUTCH-769.patch
>
>
> As discussed on the mailing list (see http://www.mail-archive.com/nutch-user@lucene.apache.org/msg15360.html) this patch allows to clear URLs queues in the Fetcher when more than a set number of exceptions have been encountered in a row. This can speed up the fetching substantially in cases where target hosts are not responsive (as a TimeoutException would be thrown) and limits cases where a whole Fetch step is slowed down because of a few queues.
> by default the parameter fetcher.max.exceptions.per.queue has a value of -1 and is deactivated.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Commented: (NUTCH-769) Fetcher to skip queues for URLS
getting repeated exceptions
Posted by "Andrzej Bialecki (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/NUTCH-769?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12784260#action_12784260 ]
Andrzej Bialecki commented on NUTCH-769:
-----------------------------------------
I had to apply this patch by hand, due to NUTCH-770. I also added conf/nutch-default.xml documentation. This was committed in rev. 885785 - thanks!
> Fetcher to skip queues for URLS getting repeated exceptions
> -------------------------------------------------------------
>
> Key: NUTCH-769
> URL: https://issues.apache.org/jira/browse/NUTCH-769
> Project: Nutch
> Issue Type: Improvement
> Components: fetcher
> Reporter: Julien Nioche
> Assignee: Andrzej Bialecki
> Priority: Minor
> Fix For: 1.1
>
> Attachments: NUTCH-769-2.patch, NUTCH-769.patch
>
>
> As discussed on the mailing list (see http://www.mail-archive.com/nutch-user@lucene.apache.org/msg15360.html) this patch allows to clear URLs queues in the Fetcher when more than a set number of exceptions have been encountered in a row. This can speed up the fetching substantially in cases where target hosts are not responsive (as a TimeoutException would be thrown) and limits cases where a whole Fetch step is slowed down because of a few queues.
> by default the parameter fetcher.max.exceptions.per.queue has a value of -1 and is deactivated.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Commented: (NUTCH-769) Fetcher to skip queues for URLS
getting repeated exceptions
Posted by "Julien Nioche (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/NUTCH-769?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12783247#action_12783247 ]
Julien Nioche commented on NUTCH-769:
-------------------------------------
Missed a couple of lines indeed when I was trying to untangle this functionality from my (heavily modified) local copy.
checkExceptionThreshold is called after the line 664
case ProtocolStatus.EXCEPTION:
logError(fit.url, status.getMessage());
int killedURLs = fetchQueues.checkExceptionThreshold(fit.getQueueID());
reporter.incrCounter("FetcherStatus", "Exceptions", killedURLs);
I'll attach a modified version of the patch
Thanks
J.
> Fetcher to skip queues for URLS getting repeated exceptions
> -------------------------------------------------------------
>
> Key: NUTCH-769
> URL: https://issues.apache.org/jira/browse/NUTCH-769
> Project: Nutch
> Issue Type: Improvement
> Components: fetcher
> Reporter: Julien Nioche
> Priority: Minor
> Attachments: NUTCH-769-2.patch, NUTCH-769.patch
>
>
> As discussed on the mailing list (see http://www.mail-archive.com/nutch-user@lucene.apache.org/msg15360.html) this patch allows to clear URLs queues in the Fetcher when more than a set number of exceptions have been encountered in a row. This can speed up the fetching substantially in cases where target hosts are not responsive (as a TimeoutException would be thrown) and limits cases where a whole Fetch step is slowed down because of a few queues.
> by default the parameter fetcher.max.exceptions.per.queue has a value of -1 and is deactivated.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
[jira] Updated: (NUTCH-769) Fetcher to skip queues for URLS getting
repeated exceptions
Posted by "Julien Nioche (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/NUTCH-769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Julien Nioche updated NUTCH-769:
--------------------------------
Attachment: NUTCH-769.patch
> Fetcher to skip queues for URLS getting repeated exceptions
> -------------------------------------------------------------
>
> Key: NUTCH-769
> URL: https://issues.apache.org/jira/browse/NUTCH-769
> Project: Nutch
> Issue Type: Improvement
> Components: fetcher
> Reporter: Julien Nioche
> Priority: Minor
> Attachments: NUTCH-769.patch
>
>
> As discussed on the mailing list (see http://www.mail-archive.com/nutch-user@lucene.apache.org/msg15360.html) this patch allows to clear URLs queues in the Fetcher when more than a set number of exceptions have been encountered in a row. This can speed up the fetching substantially in cases where target hosts are not responsive (as a TimeoutException would be thrown) and limits cases where a whole Fetch step is slowed down because of a few queues.
> by default the parameter fetcher.max.exceptions.per.queue has a value of -1 and is deactivated.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.