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https://issues.apache.org/jira/browse/MAPREDUCE-5121?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kai Wei updated MAPREDUCE-5121:
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Attachment: MAPREDUCE-5121.patch
> Problem with field separator in FieldSelectionHelper
> ----------------------------------------------------
>
> Key: MAPREDUCE-5121
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5121
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 1.0.4
> Reporter: Kai Wei
> Assignee: Kai Wei
> Priority: Trivial
> Attachments: MAPREDUCE-5121.patch
>
>
> I found that org.apache.hadoop.mapreduce.lib.fieldsel.FieldSelectionHelper
> and the corresponding old api
> org.apache.hadoop.mapred.lib.FieldSelectionMapReduce take user specified
> separator string as a regular expression in String.split(), but also use it
> as a normal string in StringBuffer.append(). It will be a problem if the
> separator string contains meta character. I suggest take separator literally
> by calling Pattern.quote(separator). Or just use another property to specify
> the separator which should be added in the output.
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