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https://issues.apache.org/jira/browse/ACCUMULO-4080?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15062656#comment-15062656
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Christopher Tubbs commented on ACCUMULO-4080:
---------------------------------------------
It would have to be one of:
{code}
systemd-219-19.el7.x86_64
initscripts-9.49.30-1.el7.x86_64
{code}
`rpm -q --scritps initscripts` just shows a `systemctl daemon-reload`. Checking
systemd shows it's doing that, plus a bunch more that I don't understand. The
others don't really do much other than lay out files and call ldconfig, so I'm
sure they're not the problem.
In general, I think updates to systemd are going to be disruptive in
unpredictable ways. Not really sure we can do much about that.
> TabletServers should be less aggressively "monitoring RO filesystems"
> ---------------------------------------------------------------------
>
> Key: ACCUMULO-4080
> URL: https://issues.apache.org/jira/browse/ACCUMULO-4080
> Project: Accumulo
> Issue Type: Bug
> Components: tserver
> Affects Versions: 1.6.4, 1.7.0
> Environment: {{uname -a}}
> Linux os-r7-ncibzu-ambari-hv-r-upg-4-re1-4 3.10.0-123.9.3.el7.x86_64 #1 SMP
> Thu Nov 6 15:06:03 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
> {{cat /etc/redhat-release}}
> CentOS Linux release 7.0.1406 (Core)
> Reporter: Josh Elser
> Assignee: Josh Elser
> Fix For: 1.6.5, 1.7.1, 1.8.0
>
>
> Ran into an automated test case where all of the tservers killed themselves
> on Centos7.
> {noformat}
> 2015-12-17 14:51:30,164 [util.FileSystemMonitor] FATAL: Exception while
> checking mount points, halting process
> java.lang.Exception: Filesystem /sys/fs/cgroup switched to read only
> at
> org.apache.accumulo.server.util.FileSystemMonitor.checkMounts(FileSystemMonitor.java:123)
> at
> org.apache.accumulo.server.util.FileSystemMonitor$1.run(FileSystemMonitor.java:90)
> at java.util.TimerThread.mainLoop(Timer.java:555)
> at java.util.TimerThread.run(Timer.java:505)
> {noformat}
> I'm not quite sure what exactly happened that caused /sys/fs/cgroup to
> suddenly be mounted as ro (my hunch is that it was an updated package).
> A workaround is to set {{tserver.monitor.fs}} to {{false}} in
> accumulo-site.xml and restart Accumulo.
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