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https://issues.apache.org/jira/browse/HBASE-2575?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12869419#action_12869419
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Todd Lipcon commented on HBASE-2575:
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My thought to reproduce is something like this:
# dd if=/dev/zero of=myimage bs=1M count=1000
# losetup -f myimage
# mdadm --create /dev/md0 --level=faulty --raid-devices=1 /dev/loop1
# mkfs.ext3 /dev/md0
# mkdir /myhbase-disk
# mount /dev/md0 /myhbase-disk
# cp -a $HBASE_HOME /myhbase-disk
# start regionserver over there
# mdadm --grow /dev/md0 -l faulty -p read-persistent
> Fault scenario of dead root drive on RS causes cluster lockup
> -------------------------------------------------------------
>
> Key: HBASE-2575
> URL: https://issues.apache.org/jira/browse/HBASE-2575
> Project: Hadoop HBase
> Issue Type: Bug
> Components: regionserver
> Affects Versions: 0.21.0
> Reporter: Todd Lipcon
> Priority: Critical
>
> We performed a fault test where we physically pulled the root drive out of a
> machine while it was on. The regionserver continued to run fine with existing
> clients. But any new clients that tried to connect to it for RPC would not
> work correctly. So when I started a new client, that client made no progress.
> Despite this, the RS continued to happily heartbeat to the master, so the
> master did not remove it from the cluster. Note that in this case, we were
> logging to NFS, and the logs continued to write, but no exceptions shown.
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