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https://issues.apache.org/jira/browse/SPARK-5008?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14275586#comment-14275586
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Brad Willard commented on SPARK-5008:
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[~nchammas] I went ahead and created a cluster with this
./spark-ec2 -v 1.2.0 --wait 235 -k ....... --copy-aws-credentials
--hadoop-major-version 1 -z us-east-1c -s 2 -m c1.medium -t c1.medium launch
spark-hdfs-bug --ebs-vol-size 10 --ebs-vol-type gp2 --ebs-vol-num 1
I updated the core-site.xml and switched /vol -> to /vol0. ran copy-dir and
restarted via stop-all.sh and start-all.sh.
That brings it up in a broken state. However if I then modify the core-site.xml
back to /vol on master and restart, it works correctly.
So that's a partial solution. I assume this is because the master node doesn't
get an ebs volume.
> Persistent HDFS does not recognize EBS Volumes
> ----------------------------------------------
>
> Key: SPARK-5008
> URL: https://issues.apache.org/jira/browse/SPARK-5008
> Project: Spark
> Issue Type: Bug
> Components: EC2
> Affects Versions: 1.2.0
> Environment: 8 Node Cluster Generated from 1.2.0 spark-ec2 script.
> -m c3.2xlarge -t c3.8xlarge --ebs-vol-size 300 --ebs-vol-type gp2
> --ebs-vol-num 1
> Reporter: Brad Willard
>
> Cluster is built with correct size EBS volumes. It creates the volume at
> /dev/xvds and it mounted to /vol0. However when you start persistent hdfs
> with start-all script, it starts but it isn't correctly configured to use the
> EBS volume.
> I'm assuming some sym links or expected mounts are not correctly configured.
> This has worked flawlessly on all previous versions of spark.
> I have a stupid workaround by installing pssh and mucking with it by mounting
> it to /vol, which worked, however it doesn't not work between restarts.
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