Thursday, 5 September 2013

Pivotal SQLFire : Using -sync=false for Server nodes


Specifying -sync=false (the default for locators) causes the sqlf command to return control after the member reaches "waiting" state. With -sync=true (the default for servers), the sqlf command does not return control until after all dependent members have booted and the member has finished synchronizing disk stores.

Always use -sync=false when starting multiple members on the same machine, especially when executing sqlf commands from a shell script or batch file, so that the script file does not hang while waiting for a particular SQLFire member to start. You can use the sqlf locator wait and/or sqlf server wait later in the script to verify that each server has finished synchronizing and has reached the "running" state. 

Example Below:

Start Locator

sqlf locator start -peer-discovery-address=localhost -peer-discovery-port=41111 -conserve-sockets=false -client-bind-address=localhost -client-port=1527 -dir=locator -sync=false

Start Servers and run a script once system is up.

sqlf server start -server-groups=MYGROUP -client-bind-address=localhost -conserve-sockets=false -client-port=1528 -critical-heap-percentage=85 -eviction-heap-percentage=75 -locators=localhost[41111] -bind-address=localhost -dir=server1 -sync=false 

sqlf server start -server-groups=MYGROUP -client-bind-address=localhost -conserve-sockets=false -client-port=1529 -critical-heap-percentage=85 -eviction-heap-percentage=75 -locators=localhost[41111] -bind-address=localhost -dir=server2 -sync=false

sqlf locator wait -dir=locator
sqlf server wait -dir=server1
sqlf server wait -dir=server2

# Ready to run some SQL now system is up and running
sqlf <<!
connect client 'localhost:1527';
run './sql/add-list.sql';
!

No comments: