Sebastian Nagel created NUTCH-3118:
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Summary: Logging pattern missing one argument placeholder
Key: NUTCH-3118
URL: https://issues.apache.org/jira/browse/NUTCH-3118
Project: Nutch
Issue Type: Bug
Components: logging, plugin
Affects Versions: 1.19
Reporter: Sebastian Nagel
Assignee: Sebastian Nagel
Fix For: 1.21
{noformat}
2025-07-16 09:52:00,603 INFO o.a.n.p.PluginRepository [main] Registered
Extension-Points:
2025-07-16T07:52:00.603565Z main WARN found 1 argument placeholders, but
provided 2 for pattern ` ({})`
2025-07-16T07:52:00.603702Z main WARN found 1 argument placeholders, but
provided 2 for pattern ` ({})`
{noformat}
This issue was observed while testing a release candidate for 1.21. Because of
the eye-catching warning for every Nutch tool, I'm going to include the fix
into 1.21.
This useful warning seems to be a new feature of the logging libraries. Before
(Nutch 1.19 and 1.20) the log messages were simply missing one parameter:
{noformat}
2025-07-11 15:50:17,951 INFO o.a.n.p.PluginRepository [main] Registered
Extension-Points:
2025-07-11 15:50:17,951 INFO o.a.n.p.PluginRepository [main] (Nutch
Content Parser)
2025-07-11 15:50:17,951 INFO o.a.n.p.PluginRepository [main] (Nutch URL
Filter)
2025-07-11 15:50:17,951 INFO o.a.n.p.PluginRepository [main] (HTML Parse
Filter)
{noformat}
With the fix applied, it's:
{noformat}
2025-07-16 09:56:06,849 INFO o.a.n.p.PluginRepository [main] Registered
Extension-Points:
2025-07-16 09:56:06,849 INFO o.a.n.p.PluginRepository [main] Nutch Content
Parser (org.apache.nutch.parse.Parser)
2025-07-16 09:56:06,849 INFO o.a.n.p.PluginRepository [main] Nutch URL
Filter (org.apache.nutch.net.URLFilter)
2025-07-16 09:56:06,849 INFO o.a.n.p.PluginRepository [main] HTML Parse
Filter (org.apache.nutch.parse.HtmlParseFilter)
{noformat}
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