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https://issues.apache.org/jira/browse/HDFS-12919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16288479#comment-16288479
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Íñigo Goiri commented on HDFS-12919:
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I added a very quick implementation of the EC methods.
I don't have a cluster to test this, so I'll try to do a unit test to cover
these basic operations.
> RBF: MR sets erasure coding by default
> --------------------------------------
>
> Key: HDFS-12919
> URL: https://issues.apache.org/jira/browse/HDFS-12919
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Affects Versions: 3.0.0
> Reporter: Íñigo Goiri
> Assignee: Íñigo Goiri
> Labels: RBF
> Attachments: HDFS-12919.000.patch
>
>
> MAPREDUCE-6954 started to tune the erasure coding settings for staging files.
> However, the {{Router}} does not support this operation and throws:
> {code}
> 17/12/12 14:36:07 INFO mapreduce.JobSubmitter: Cleaning up the staging area
> /tmp/hadoop-yarn/staging/hadoop/.staging/job_1513116010218_0002
> org.apache.hadoop.ipc.RemoteException(java.lang.UnsupportedOperationException):
> Operation "setErasureCodingPolicy" is not supported
> at
> org.apache.hadoop.hdfs.server.federation.router.RouterRpcServer.checkOperation(RouterRpcServer.java:368)
> at
> org.apache.hadoop.hdfs.server.federation.router.RouterRpcServer.setErasureCodingPolicy(RouterRpcServer.java:1805)
> {code}
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