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Date: Mon, 3 Jun 2013 06:21:21 +0000 (UTC)
From: "Dawid Weiss (JIRA)" <jira@apache.org>
To: dev@mahout.apache.org
Message-ID: <JIRA.12648680.1369158412388.55064.1370240481262@arcas>
In-Reply-To: <JIRA.12648680.1369158412388@arcas>
References: <JIRA.12648680.1369158412388@arcas>
Subject: [jira] [Commented] (MAHOUT-1225) Sets and maps incorrectly clear()
 their state arrays (potential endless loops)
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    [ https://issues.apache.org/jira/browse/MAHOUT-1225?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13672852#comment-13672852 ] 

Dawid Weiss commented on MAHOUT-1225:
-------------------------------------

Ehm. I've closed this issue as per Robin's comment above but I don't think this was the right way to go -- this should have been left open (with a fixed resolution) until a release is made. Apologies for the noise. I can't reopen it now -- probably missing some Jira's karma to do this. Please correct my mistake if you have admin rights, reopen and then bulk close at release time. Thanks!
                
> Sets and maps incorrectly clear() their state arrays (potential endless loops)
> ------------------------------------------------------------------------------
>
>                 Key: MAHOUT-1225
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1225
>             Project: Mahout
>          Issue Type: Bug
>          Components: Math
>    Affects Versions: 0.7
>         Environment: Eclipse, linux Fedora 17, Java 1.7, Mahout Maths collections (Set) 0.7, hppc 0.4.3
>            Reporter: Sophie Sperner
>            Assignee: Dawid Weiss
>              Labels: hashset, java, mahout, test
>             Fix For: 0.7
>
>         Attachments: hppc-0.4.3.jar, MAHOUT-1225.patch, MAHOUT-1225.patch, MAHOUT-1225.patch, mahout-math-0.8-SNAPSHOT.jar
>
>   Original Estimate: 48h
>  Remaining Estimate: 48h
>
> The code I attached hangs on forever, Eclipse does not print me its stack trace because it does not terminate the program. So I decided to make a small test.java file that you can easily run.
> This code has the main function that simply runs getItemList() method which successfully executes getDataset() method (here please download mushroom.dat dataset and set the full path into filePath string variable) and the hangs on (the problem happens on a fourth columnValues.add() call). After the dataset was taken into X array, the code simply goes through X column by column and searches for different items in it.
> If you uncomment IntSet columnValues = new IntOpenHashSet(); and corresponding import headers then everything will work just fine (you will also need to include hppc jar file found here http://labs.carrotsearch.com/hppc.html or below in the attachment).

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