[Postgres-xc-general] tracing cause of datanode crash

[Sandeep G. <gup...@gm...>]

I am running single instance of postgres-xc with  several datanode
Each data node runs on its own machine.
After instantiating the cluster the database sits idle. I do not perform
any create table or insert operations. However, after some time all the
datanode  automatically shuts down (log messages attached).

Any pointers as to why this maybe happening would be very useful.

-Sandeep

The log files across all datanode contain various error messages. These
include:


LOG:  statistics collector process (PID 23073) was terminated by signal 9:
Killed
LOG:  WAL writer process (PID 23071) was terminated by signal 9: Killed
LOG:  terminating any other active server processes
WARNING:  terminating connection because of crash of another server process
DETAIL:  The postmaster has commanded this server process to roll back the
current transaction and exit, because another server process exited
abnormally and possibly corrupted shared memory.
HINT:  In a moment you should be able to reconnect to the database and
repeat your command.
LOG:  all server processes terminated; reinitializing


LOG:  checkpointer process (PID 21406) was terminated by signal 9: Killed
LOG:  terminating any other active server processes
WARNING:  terminating connection because of crash of another server process
DETAIL:  The postmaster has commanded this server process to roll back the
current transaction and exit, because another server process exited
abnormally and possibly corrupted shared memory.
LOG:  statistics collector process (PID 28881) was terminated by signal 9:
Killed
LOG:  autovacuum launcher process (PID 28880) was terminated by signal 9:
Killed
LOG:  terminating any other active server processes