Marius created HADOOP-12260:
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Summary: BlockSender.sendChunks() exception
Key: HADOOP-12260
URL: https://issues.apache.org/jira/browse/HADOOP-12260
Project: Hadoop Common
Issue Type: Bug
Affects Versions: 2.7.1, 2.6.0
Environment: OS: CentOS Linux release 7.1.1503 (Core)
Kernel: 3.10.0-229.1.2.el7.x86_64
Reporter: Marius
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 one 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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