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Posted to common-issues@hadoop.apache.org by "Jason Lowe (JIRA)" <ji...@apache.org> on 2012/08/06 17:22:03 UTC
[jira] [Moved] (HADOOP-8655) In TextInputFormat, while specifying
textinputformat.record.delimiter the character/character sequences in data
file similar to starting character/starting character sequence in delimiter
were found missing in certain cases in the Map Output
[ https://issues.apache.org/jira/browse/HADOOP-8655?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jason Lowe moved MAPREDUCE-4519 to HADOOP-8655:
-----------------------------------------------
Fix Version/s: (was: 0.20.2)
Target Version/s: 2.2.0-alpha (was: 0.20.2)
Affects Version/s: (was: 0.20.2)
0.20.2
Key: HADOOP-8655 (was: MAPREDUCE-4519)
Project: Hadoop Common (was: Hadoop Map/Reduce)
> In TextInputFormat, while specifying textinputformat.record.delimiter the character/character sequences in data file similar to starting character/starting character sequence in delimiter were found missing in certain cases in the Map Output
> -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-8655
> URL: https://issues.apache.org/jira/browse/HADOOP-8655
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 0.20.2
> Environment: Linux- Ubuntu 10.04
> Reporter: Arun A K
> Labels: hadoop, mapreduce, textinputformat, textinputformat.record.delimiter
> Attachments: MAPREDUCE-4519.patch
>
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> Set textinputformat.record.delimiter as "</entity>"
> Suppose the input is a text file with the following content
> <entity><id>1</id><name>User1</name></entity><entity><id>2</id><name>User2</name></entity><entity><id>3</id><name>User3</name></entity><entity><id>4</id><name>User4</name></entity><entity><id>5</id><name>User5</name></entity>
> Mapper was expected to get value as
> Value 1 - <entity><id>1</id><name>User1</name>
> Value 2 - <entity><id>2</id><name>User2</name>
> Value 3 - <entity><id>3</id><name>User3</name>
> Value 4 - <entity><id>4</id><name>User4</name>
> Value 5 - <entity><id>5</id><name>User5</name>
> According to this bug Mapper gets value
> Value 1 - entity><id>1</id><name>User1</name>
> Value 2 - <entity>id>2</id><name>User2</name>
> Value 3 - <entity><id>3id><name>User3</name>
> Value 4 - <entity><id>4</id><name>User4name>
> Value 5 - <entity><id>5</id><name>User5</name>
> The pattern shown above need not occur for value 1,2,3 necessarily. The bug occurs at some random positions in the map input.
>
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