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https://issues.apache.org/jira/browse/NUTCH-1638?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13762674#comment-13762674
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Aaron Scheffel commented on NUTCH-1638:
---------------------------------------
They are actually not the same objects. You can check with the debugger. Just
put a break there and see if that expression is ever true, it never is. Your
comparing two string objects since you serialized one in one map one way and
another a different way the objects are not the same.
Please feel free to try it.
> SolrWriter Bad String comparision
> ---------------------------------
>
> Key: NUTCH-1638
> URL: https://issues.apache.org/jira/browse/NUTCH-1638
> Project: Nutch
> Issue Type: Bug
> Components: indexer
> Affects Versions: 1.7, 2.2.1
> Reporter: Aaron Scheffel
> Priority: Minor
> Labels: patch
> Attachments: NUTCH-1638.patch
>
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> In version 2.2.1 and 1.7
> Class org.apache.nutch.indexer.solr.SolrWriter
> Line 66
> inputDoc.addField(solrMapping.mapKey(e.getKey()), val2);
> String sCopy = solrMapping.mapCopyKey(e.getKey());
> if (sCopy != e.getKey()) {
> inputDoc.addField(sCopy, val2);
> }
> There is a string comparison "sCopy != e.getKey()" with a != and not an
> equals. It basically never works right. Not sure if someone was trying to
> be clever but even if those strings are the same they happen to be
> different objects. Which I'm assuming is due to how the strings are
> serialized in from the config files.
> Suggest its updated to
> String sCopy = solrMapping.mapCopyKey(e.getKey());
> if (!sCopy.equals(solrMapping.mapKey(e.getKey()))) {
> inputDoc.addField(sCopy, val2);
> }
> -Aaron
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