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Posted to dev@lucene.apache.org by "Erick Erickson (JIRA)" <ji...@apache.org> on 2017/12/04 01:43:00 UTC

[jira] [Updated] (SOLR-11687) SolrCore.getNewIndexDir falsely returns {dataDir}/index on any IOException reading index.properties

     [ https://issues.apache.org/jira/browse/SOLR-11687?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Erick Erickson updated SOLR-11687:
----------------------------------
    Attachment: SOLR-11687.patch

Final patch (except for CHANGES.txt). I'll commit tomorrow (Monday) unless there are objections after running another round of precommit/tests.

There's a bit of extra noise. When I adopted Hoss' suggestion to use SolrException rather than RuntimeException, IntelliJ added an import and changed all the 
SolrException.ErrorCode.SERVER_ERROR
to
ErrorCode.SERVER_ERROR

but I'm going to leave that part in and easily ignorable.

> SolrCore.getNewIndexDir falsely returns {dataDir}/index on any IOException reading index.properties
> ---------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-11687
>                 URL: https://issues.apache.org/jira/browse/SOLR-11687
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Erick Erickson
>            Assignee: Erick Erickson
>         Attachments: SOLR-11687.patch, SOLR-11687.patch
>
>
> I'll link the originating Solr JIRA in a minute (many thanks Nikolay). 
> right at the top of this method we have this:
> {code}
> String result = dataDir + "index/";
> {code}
> If, for any reason, the method doesn't complete properly, the "result" is still returned. Now for instance, down in SolrCore.cleanupOldIndexDirectories the "old" directory is dataDir/index which may point to the current index.
> This seems particularly dangerous:
> {code}
>        try {
>           p.load(new InputStreamReader(is, StandardCharsets.UTF_8));
>           String s = p.getProperty("index");
>           if (s != null && s.trim().length() > 0) {
>               result = dataDir + s;
>           }
>         } catch (Exception e) {
>           log.error("Unable to load " + IndexFetcher.INDEX_PROPERTIES, e);
>         } finally {
>           IOUtils.closeQuietly(is);
>         }
> {code}
> Should "p.load" fail for any reason whatsoever, we'll still return dataDir/index.
> Anyone want to chime on on what the expectations are here before I dive in?



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