Ubuntu 11.10 + kernel 3.0.x unstable under Amazon EC2

Elastic Stack Elasticsearch
1

Hi,

Just a quick note to say that I have experienced a lot of kernel
panics on all nodes of a cluster installed with Ubuntu 11.10 + kernel
3.0.x running under Amazon EC2 (large instance).

Kernels 3.0.0-12, 3.0.0-13 and 3.0.0-14 all panic'ed under high
ElasticSearch load. I am using ES 0.18.5 with OpenJDK java version
"1.6.0_23" Runtime Environment (IcedTea6 1.11pre)
(6b23~pre11-0ubuntu1.11.10)

I "downgraded" to kernel 2.6.38-8 and so far so good.

@colinsurprenant

2

Just curious.
Have you tried to use the latest JDK from Sun?
It seems to me that this problem is also kind of related to JVM
implementation.

-----Original Message-----
From: elasticsearch@googlegroups.com
[mailto:elasticsearch@googlegroups.com] On Behalf Of Colin Surprenant
Sent: 2011年12月23日 0:59
To: elasticsearch
Subject: Ubuntu 11.10 + kernel 3.0.x unstable under Amazon EC2

Hi,

Just a quick note to say that I have experienced a lot of kernel panics on
all
nodes of a cluster installed with Ubuntu 11.10 + kernel 3.0.x running
under
Amazon EC2 (large instance).

Kernels 3.0.0-12, 3.0.0-13 and 3.0.0-14 all panic'ed under high
Elasticsearch
load. I am using ES 0.18.5 with OpenJDK java version "1.6.0_23" Runtime
Environment (IcedTea6 1.11pre)
(6b23~pre11-0ubuntu1.11.10)

I "downgraded" to kernel 2.6.38-8 and so far so good.

@colinsurprenant

3

It depends if it really relates to JVM, it might relate to the
virtualization layer (which were responsible for the 10.04 freeze of death
problem)... . In any case, thanks for sharing it Colin!

2011/12/22 Kun Niu haoniukun@gmail.com

Just curious.
Have you tried to use the latest JDK from Sun?
It seems to me that this problem is also kind of related to JVM
implementation.

-----Original Message-----
From: elasticsearch@googlegroups.com
[mailto:elasticsearch@googlegroups.com] On Behalf Of Colin Surprenant
Sent: 2011年12月23日 0:59
To: elasticsearch
Subject: Ubuntu 11.10 + kernel 3.0.x unstable under Amazon EC2

Hi,

Just a quick note to say that I have experienced a lot of kernel panics
on
all
nodes of a cluster installed with Ubuntu 11.10 + kernel 3.0.x running
under
Amazon EC2 (large instance).

Kernels 3.0.0-12, 3.0.0-13 and 3.0.0-14 all panic'ed under high
Elasticsearch
load. I am using ES 0.18.5 with OpenJDK java version "1.6.0_23" Runtime
Environment (IcedTea6 1.11pre)
(6b23~pre11-0ubuntu1.11.10)

I "downgraded" to kernel 2.6.38-8 and so far so good.

@colinsurprenant

4

No, I haven't tried Sun JDK with 11.10 + kernel 3.0.x but I doubt it
is JVM related. I more looks like a Xen + kernel issue. All panics
occurred in period of "high" load when cluster was recovering from a
node restart.

On Thu, Dec 22, 2011 at 12:04 PM, Kun Niu haoniukun@gmail.com wrote:

Just curious.
Have you tried to use the latest JDK from Sun?
It seems to me that this problem is also kind of related to JVM
implementation.

-----Original Message-----
From: elasticsearch@googlegroups.com
[mailto:elasticsearch@googlegroups.com] On Behalf Of Colin Surprenant
Sent: 2011年12月23日 0:59
To: elasticsearch
Subject: Ubuntu 11.10 + kernel 3.0.x unstable under Amazon EC2

Hi,

Just a quick note to say that I have experienced a lot of kernel panics on
all
nodes of a cluster installed with Ubuntu 11.10 + kernel 3.0.x running
under
Amazon EC2 (large instance).

Kernels 3.0.0-12, 3.0.0-13 and 3.0.0-14 all panic'ed under high
Elasticsearch
load. I am using ES 0.18.5 with OpenJDK java version "1.6.0_23" Runtime
Environment (IcedTea6 1.11pre)
(6b23~pre11-0ubuntu1.11.10)

I "downgraded" to kernel 2.6.38-8 and so far so good.

@colinsurprenant