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Posted to dev@lucene.apache.org by "Shawn Heisey (JIRA)" <ji...@apache.org> on 2012/12/14 20:28:12 UTC
[jira] [Commented] (LUCENE-4631) Add utility class for getting
information about suspicious system concerns at runtime
[ https://issues.apache.org/jira/browse/LUCENE-4631?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13532569#comment-13532569 ]
Shawn Heisey commented on LUCENE-4631:
--------------------------------------
It seems like SOLR-4132 might be at least marginally related to this ... or it might be something entirely separate. Which way do you see it?
> Add utility class for getting information about suspicious system concerns at runtime
> -------------------------------------------------------------------------------------
>
> Key: LUCENE-4631
> URL: https://issues.apache.org/jira/browse/LUCENE-4631
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Hoss Man
>
> (Inspired by an idea Uwe mentioned in LUCENE-4630)
> Over the years, we've discovered various bugs in JVMs, specific JVM options, combinations of JVM options, combinations of JVMs and operating systems, etc... We've done a fairly decent job of alerting users to these known issues in documentation, and we've attempted to make tests not give false failures if people use these setups -- but there is probably more we could be doing to alert users who may not run tests, or read all the docs/blogs.
> I think we should add a new class to Lucene Core that provides a simple API for applications to get a list of "warning" Strings based on what lucene can dedect from the currently running JVM/OS. This should be something trivial for people writing apps using lucene to integrate into their code and/or tests (even if they don't use the LuceneTestCase) to notify them if when there are known compatibility issues between their enviornment and the version of lucene this class ships with.
> This code should be executed, and all of the resulting warning messages outputed by...
> * the CheckIndex command line mode on startup
> * the Lucene Demo app(s) on startup
> * infostream (if used) the first time it's configured on an IndexWriterConfig
> * Solr startup logs
> * Solr admin UI (as exposed by the Solr SystemInfoRequestHandler HTTP API)
> * in the Lucene test framework after any test runs
> ...in addition, specific logic/messages in this code could help implement the annotations Dawid is suggesting in LUCENE-4630.
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