23 October 2020

Java SIGBUS

 Core dump of a lack of space at /tmp

:S

Aborted (core dumped)
#
#   https://github.com/AdoptOpenJDK/openjdk-support/issues
# If you would like to submit a bug report, please visit:"
#
#  SIGBUS (0x7) at pc=0x00007f1240764eac, pid=6, tid=48#
# JRE version: OpenJDK Runtime Environment AdoptOpenJDK (11.0.8+10) (build 11.0.8+10)
# Java VM: OpenJDK 64-Bit Server VM AdoptOpenJDK (11.0.8+10, mixed mode, tiered, compressed oops, serial gc, linux-amd64)# C  [libc.so.6+0x18eeac]
# Problematic frame:
#
# Core dump will be written. Default location: /usr/app/core.6
#
# An error report file with more information is saved as:
# /usr/app/hs_err_pid6.log
#
# A fatal error has been detected by the Java Runtime Environment:
#

it is interesting that docker also has shared memory device configuration /dev/shm
through shm_size

https://efod.se/java-sigbus/

https://confluence.atlassian.com/confkb/java-vm-dies-with-sigbus-0x7-when-temp-directory-is-full-on-linux-815584538.html

https://bugs.freedesktop.org/show_bug.cgi?id=100432

https://buddy.works/docs/on-premises/solving-problems/shared-memory


Socket 101

 A connection between two computers uses a socket.





https://www.silabs.com/products/development-tools/software/micrium-os/micrium-tcp-ip-networking

http://personales.upv.es/rmartin/TcpIp/cap02s12.html

https://docs.oracle.com/javase/tutorial/networking/sockets/definition.html

https://cwiki.apache.org/confluence/display/HADOOP2/SocketTimeout

https://apur1e.wordpress.com/2018/03/23/299-tcp-ip-http-get-post/

https://en.wikipedia.org/wiki/Network_socket
 

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