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Fwd: Re: Cassandra crashed with no log


Thanks Jeff,
At time of crash it said: .../linux-4.4.0/mm/pgtable-generic.c:33: bad pmd....
So i just run this on all of my nodes:
echo never | sudo tee /sys/kernel/mm/transparent_hugepage/defrag

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============ Forwarded message ============
From : Jeff Jirsa <jjirsa@xxxxxxxxx>
To : <user@xxxxxxxxxxxxxxxxxxxx>
Date : Sun, 22 Jul 2018 10:43:38 +0430
Subject : Re: Cassandra crashed with no log
============ Forwarded message ============

Anything in non-Cassandra logs? Dmesg?

-- 
Jeff Jirsa


On Jul 21, 2018, at 11:07 PM, onmstester onmstester <onmstester@xxxxxxxx> wrote:

Cassandra in one of my nodes, crashed without any error/warning in system/gc/debug log. All jmx metrics is being monitored, last fetched values for heap usage is 50% and for cpu usage is 20%. How can i find the cause of crash?

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