[
https://issues.apache.org/jira/browse/HADOOP-1722?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Klaas Bosteels updated HADOOP-1722:
-----------------------------------
Attachment: HADOOP-1722-v4.patch
The failed contrib unit tests are not caused by the patch as far as I can tell,
but I did find a small unrelated bug (serializing lists did not work properly
in all cases). The 4th version of the patch contains a fix for this bug (as
well as an update to the unit test that did not catch this bug before).
Furthermore, I also changed the semantics of {{-typedbytes output}} once more.
It now corresponds to
* {{stream.map.input.typed.bytes}}={{false}}
* {{stream.map.output.typed.bytes}}={{true}}
* {{stream.reduce.input.typed.bytes}}={{true}}
* {{stream.reduce.output.typed.bytes}}={{true}}
because it is more likely that you want to take text as input but use type
bytes for everything else (instead of only using typed bytes for the reducer
output).
> Make streaming to handle non-utf8 byte array
> --------------------------------------------
>
> Key: HADOOP-1722
> URL: https://issues.apache.org/jira/browse/HADOOP-1722
> Project: Hadoop Core
> Issue Type: Improvement
> Components: contrib/streaming
> Reporter: Runping Qi
> Assignee: Klaas Bosteels
> Attachments: HADOOP-1722-v2.patch, HADOOP-1722-v3.patch,
> HADOOP-1722-v4.patch, HADOOP-1722.patch
>
>
> Right now, the streaming framework expects the output sof the steam process
> (mapper or reducer) are line
> oriented UTF-8 text. This limit makes it impossible to use those programs
> whose outputs may be non-UTF-8
> (international encoding, or maybe even binary data). Streaming can overcome
> this limit by introducing a simple
> encoding protocol. For example, it can allow the mapper/reducer to hexencode
> its keys/values,
> the framework decodes them in the Java side.
> This way, as long as the mapper/reducer executables follow this encoding
> protocol,
> they can output arabitary bytearray and the streaming framework can handle
> them.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
