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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Reopened: (HADOOP-5623) Streaming: process provided status messages are overwritten every 10 seoncds
Date Sat, 05 Dec 2009 00:13:20 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-5623?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Todd Lipcon reopened HADOOP-5623:
---------------------------------


Reopening - this patch needs to be committed to branch-20 as well for 0.20.2. See MAPREDUCE-576.

I applied this patch to branch 20, and then ran the test case provided in that other JIRA
like this:

{noformat}
./bin/hadoop jar build/contrib/streaming/hadoop-0.20.2-dev-streaming.jar -jt local -Dfs.default.name=file:///
-mapper cat -reducer /tmp/test.py -input file:///etc/motd -output file:///tmp/foo
{noformat}

Before the patch, it failed as noted in that JIRA. After the patch, passed.

> Streaming: process provided status messages are overwritten every 10 seoncds
> ----------------------------------------------------------------------------
>
>                 Key: HADOOP-5623
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5623
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 0.19.0, 0.19.1, 0.20.0
>            Reporter: Rick Cox
>            Assignee: Rick Cox
>             Fix For: 0.20.2, 0.21.0
>
>         Attachments: HADOOP-5623-streaming-status.patch, HADOOP-5623-streaming-status.patch,
hadoop-5623-v1.patch
>
>
> Every 10 seconds (if the streaming process is producing output key/values on stdout),
PipeMapRed sets the task's status string to "Records R/W=N/N". This replaces any custom task
status that the streaming process may have specified using the "reporter:status:" stderr lines.

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