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https://issues.apache.org/jira/browse/CRUNCH-491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14307472#comment-14307472
]
Christian Tzolov edited comment on CRUNCH-491 at 2/5/15 4:58 PM:
-----------------------------------------------------------------
[~champgm] suggestion to use the CharsetEncoder for re-computing the original
(raw) byte size from the encoded characters seems to work:
{code}
public static class XmlRecordReader extends RecordReader<LongWritable, Text> {
...
private int calculateCharacterByteLength(final char character) {
try {
return charsetEncoder.encode(CharBuffer.wrap(new char[] { character
})).limit();
} catch (final CharacterCodingException e) {
throw new RuntimeException(inputEncoding);
}
}
}
{code}
was (Author: tzolov):
Apparently the assumption that one can't re-compute the original (raw) byte
size for a given characters is not correct. Following [~champgm] suggestion to
use CharsetEncoder seems to do the trick.
{code}
public static class XmlRecordReader extends RecordReader<LongWritable, Text> {
...
private int calculateCharacterByteLength(final char character) {
try {
return charsetEncoder.encode(CharBuffer.wrap(new char[] { character
})).limit();
} catch (final CharacterCodingException e) {
throw new RuntimeException(inputEncoding);
}
}
}
{code}
> Add an Xml File Source
> ----------------------
>
> Key: CRUNCH-491
> URL: https://issues.apache.org/jira/browse/CRUNCH-491
> Project: Crunch
> Issue Type: New Feature
> Components: Core
> Affects Versions: 0.11.0
> Reporter: Christian Tzolov
> Assignee: Christian Tzolov
> Priority: Minor
> Labels: inputformat, source, xml
> Attachments: CRUNCH-491-1.patch, CRUNCH-491.patch, CRUNCH-491b.patch,
> CRUNCH-491c.patch, CRUNCH-491d.patch, CRUNCH-491f.patch
>
>
> Large XML documents that are composed of a repetitive XML elements can be
> broken into chunks delimited by the start and end tags of those elements.
> The XmlSource should process XML files and extract out the XML between the
> pre-configured start / end tags.
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