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

Hoss Man updated SOLR-11687:
----------------------------
    Description: 
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?

  was:
I'll link the originating Solr JIRA in a minute (many thanks Nikolay). 

right at the top of this method we have this:

String result = dataDir + "index/";

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:
{{
       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);
        }
 }}

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?

        Summary: SolrCore.getNewIndexDir falsely returns {dataDir}/index on any 
IOException reading index.properties  (was: SolrCore.getNewIndexDir returns the 
current index on most exceptions)

(issue edited to reformat the description and clarify the summary)

> 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
>
> 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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