[jira] [Commented] (HADOOP-12260) BlockSender.sendChunks() exception

["Marius (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-12260?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14638820#comment-14638820 ] 

Marius commented on HADOOP-12260:
---------------------------------

I was able to  recreate this error on fresh machine with a single node setup running Linux Mint 17.2. The error occured in the same was as before even with a different avro file (took this:
https://cwiki.apache.org/confluence/display/AVRO/Interoperability+Testing but wrote a 100MB file by looping over append DATUM).
The error occured with pydoop as well as with the normal streaming command.

Marius

> BlockSender.sendChunks() exception
> ----------------------------------
>
>                 Key: HADOOP-12260
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12260
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 2.6.0, 2.7.1
>         Environment: OS: CentOS Linux release 7.1.1503 (Core) 
> Kernel: 3.10.0-229.1.2.el7.x86_64
>            Reporter: Marius
>
> Hi
> I was running some streaming jobs with avro files from my hadoop cluster. They performed poorly so i checked the logs of my datanodes and found this:
> http://pastebin.com/DXKJJ55z
> The cluster is running on CentOS machines:
> CentOS Linux release 7.1.1503 (Core) 
> This is the Kernel:
> 3.10.0-229.1.2.el7.x86_64
> No one on the userlist replied and i could not find anything helpful on the internet despite disk failure which is unlikely to cause this because here are several machines and its not very likely that all of their disks fail at the same time.
> This error is not reported on the console when running a job and the error occurs from time to time and then dissapears and comes back again.
> The block size of the cluster is the default value.
> This is my command:
> hadoop jar hadoop-streaming-2.7.1.jar -files mapper.py,reducer.py,avro-1.
> 7.7.jar,avro-mapred-1.7.7-hadoop2.jar -D mapreduce.job.reduces=15 -libjars avro-1.7.7.jar,avro-mapred-1.7.7-hadoop2.jar -input /Y/Y1.avro -output /htest/output -mapper mapper.py -reducer reducer.py -inputformat org.apache.avro.mapred.AvroAsTextInputFormat
> Marius



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