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https://issues.apache.org/jira/browse/HAMA-601?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13459190#comment-13459190
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Hudson commented on HAMA-601:
-----------------------------
Integrated in Hama-Nightly #680 (See
[https://builds.apache.org/job/Hama-Nightly/680/])
[HAMA-601]: Hama Streaming (Revision 1387551)
Result = FAILURE
tjungblut :
Files :
* /hama/trunk/CHANGES.txt
* /hama/trunk/bin/hama
* /hama/trunk/conf/hama-default.xml
* /hama/trunk/core/src/main/java/org/apache/hama/bsp/BSPPeerImpl.java
* /hama/trunk/core/src/main/java/org/apache/hama/pipes
* /hama/trunk/core/src/main/java/org/apache/hama/pipes/Application.java
* /hama/trunk/core/src/main/java/org/apache/hama/pipes/BinaryProtocol.java
* /hama/trunk/core/src/main/java/org/apache/hama/pipes/DownwardProtocol.java
* /hama/trunk/core/src/main/java/org/apache/hama/pipes/PipesBSP.java
*
/hama/trunk/core/src/main/java/org/apache/hama/pipes/PipesNonJavaInputFormat.java
* /hama/trunk/core/src/main/java/org/apache/hama/pipes/StreamingProtocol.java
* /hama/trunk/core/src/main/java/org/apache/hama/pipes/Submitter.java
* /hama/trunk/jdbm
* /hama/trunk/pom.xml
> Hama Streaming
> --------------
>
> Key: HAMA-601
> URL: https://issues.apache.org/jira/browse/HAMA-601
> Project: Hama
> Issue Type: New Feature
> Components: bsp core, messaging
> Affects Versions: 0.5.0
> Reporter: Thomas Jungblut
> Assignee: Thomas Jungblut
> Fix For: 0.6.0
>
> Attachments: HAMA-601_1.patch, HAMA-601.patch,
> HAMA-601_v2_final.patch, streaming_1.patch
>
>
> We can also do a Streaming job to allow other languages to use Hama's BSP API.
> Basically you fork a new process in the BSP method, then set a inputstream
> for the process which it can read very simple.
> Then an outputstream from the childprocess can be read to give it following
> abilities:
> - get a received message
> - send a new message
> - sync
> - read a line from input
> - write to output
> - reset the input to reread
> Those actions must have a constant prefix, for example send a message could
> look like this:
> %SEND_MESSAGE%=this is the message
> or sync:
> $SYNC$=
> The logic behind it is that we can simply split in Java code by "=" and the
> lefthand side is the action and the righthandside is the value of this action.
> Between the peers the messages are Text, which has some overhead but is
> easier to implement and the communication between the BSP task and the forked
> process is based on text/strings anyway.
> This time I do not advise to copy the whole streaming from Hadoop itself.
> However the parts that repacks the jar with needed execution scripts and the
> option handling seems good to reuse.
> The input- and outputstream handling must be written from scratch because we
> want to take actions into account.
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