Problems with frequent Nifi core dumping

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Problems with frequent Nifi core dumping

Cheryl Jennings
Hi Everyone,

I'm running Nifi 0.7.0 and I have started to see problems where nifi will crash repeatedly and often won't be stable until I've restarted the machine.  Here's a relevant part from nifi-bootstrap.log:

2016-11-15 14:55:54,272 INFO [NiFi logging handler] org.apache.nifi.StdOut # A fatal error has been detected by the Java Runtime Environment:
2016-11-15 14:55:54,272 INFO [NiFi logging handler] org.apache.nifi.StdOut #
2016-11-15 14:55:54,272 INFO [NiFi logging handler] org.apache.nifi.StdOut #  SIGSEGV (0xb) at pc=0x00000033ada09470, pid=27979, tid=140067910633216
2016-11-15 14:55:54,272 INFO [NiFi logging handler] org.apache.nifi.StdOut #
2016-11-15 14:55:54,272 INFO [NiFi logging handler] org.apache.nifi.StdOut # JRE version: Java(TM) SE Runtime Environment (8.0_74-b02) (build 1.8.0_74-b02)
2016-11-15 14:55:54,272 INFO [NiFi logging handler] org.apache.nifi.StdOut # Java VM: Java HotSpot(TM) 64-Bit Server VM (25.74-b02 mixed mode linux-amd64 compressed oops)
2016-11-15 14:55:54,273 INFO [NiFi logging handler] org.apache.nifi.StdOut # Problematic frame:
2016-11-15 14:55:54,273 INFO [NiFi logging handler] org.apache.nifi.StdOut # C  [libpthread.so.0+0x9470]  pthread_mutex_lock+0x0

A bit more detail can be found here: http://paste.ubuntu.com/23488485/

Has anyone seen something like this before?

Thanks!
-Cheryl
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Re: Problems with frequent Nifi core dumping

Joe Witt
Hello Cheryl

Nope - not something that I've seen.  But could you try doing what it
shows in that log

"Failed to write core dump. Core dumps have been disabled. To enable
core dumping, try "ulimit -c unlimited" before starting Java again"

There *might* be some useful data in the core dump itself.

Thanks
Joe

On Wed, Nov 16, 2016 at 10:12 PM, Cheryl Jennings <[hidden email]> wrote:

> Hi Everyone,
>
> I'm running Nifi 0.7.0 and I have started to see problems where nifi will
> crash repeatedly and often won't be stable until I've restarted the machine.
> Here's a relevant part from nifi-bootstrap.log:
>
> 2016-11-15 14:55:54,272 INFO [NiFi logging handler] org.apache.nifi.StdOut #
> A fatal error has been detected by the Java Runtime Environment:
> 2016-11-15 14:55:54,272 INFO [NiFi logging handler] org.apache.nifi.StdOut #
> 2016-11-15 14:55:54,272 INFO [NiFi logging handler] org.apache.nifi.StdOut #
> SIGSEGV (0xb) at pc=0x00000033ada09470, pid=27979, tid=140067910633216
> 2016-11-15 14:55:54,272 INFO [NiFi logging handler] org.apache.nifi.StdOut #
> 2016-11-15 14:55:54,272 INFO [NiFi logging handler] org.apache.nifi.StdOut #
> JRE version: Java(TM) SE Runtime Environment (8.0_74-b02) (build
> 1.8.0_74-b02)
> 2016-11-15 14:55:54,272 INFO [NiFi logging handler] org.apache.nifi.StdOut #
> Java VM: Java HotSpot(TM) 64-Bit Server VM (25.74-b02 mixed mode linux-amd64
> compressed oops)
> 2016-11-15 14:55:54,273 INFO [NiFi logging handler] org.apache.nifi.StdOut #
> Problematic frame:
> 2016-11-15 14:55:54,273 INFO [NiFi logging handler] org.apache.nifi.StdOut #
> C  [libpthread.so.0+0x9470]  pthread_mutex_lock+0x0
>
>
> A bit more detail can be found here: http://paste.ubuntu.com/23488485/
>
> Has anyone seen something like this before?
>
> Thanks!
> -Cheryl