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# Test the meaningful offset implementation to make sure masters
# are able to PSYNC with replicas even if the replication stream
# has pending PINGs at the end.
start_server {tags {"psync2"}} {
start_server {} {
# Config
set debug_msg 0 ; # Enable additional debug messages
for {set j 0} {$j < 2} {incr j} {
set R($j) [srv [expr 0-$j] client]
set R_host($j) [srv [expr 0-$j] host]
set R_port($j) [srv [expr 0-$j] port]
$R($j) CONFIG SET repl-ping-replica-period 1
if {$debug_msg} {puts "Log file: [srv [expr 0-$j] stdout]"}
}
# Setup replication
test "PSYNC2 meaningful offset: setup" {
$R(1) replicaof $R_host(0) $R_port(0)
$R(0) set foo bar
wait_for_condition 50 1000 {
[status $R(1) master_link_status] == "up" &&
[$R(0) dbsize] == 1 && [$R(1) dbsize] == 1
} else {
fail "Replicas not replicating from master"
}
}
test "PSYNC2 meaningful offset: write and wait replication" {
$R(0) INCR counter
$R(0) INCR counter
$R(0) INCR counter
wait_for_condition 50 1000 {
[$R(0) GET counter] eq [$R(1) GET counter]
} else {
fail "Master and replica don't agree about counter"
}
}
# In this test we'll make sure the replica will get stuck, but with
# an active connection: this way the master will continue to send PINGs
# every second (we modified the PING period earlier)
test "PSYNC2 meaningful offset: pause replica and promote it" {
$R(1) MULTI
$R(1) DEBUG SLEEP 5
$R(1) SLAVEOF NO ONE
$R(1) EXEC
$R(1) ping ; # Wait for it to return back available
}
test "Make the old master a replica of the new one and check conditions" {
set sync_partial [status $R(1) sync_partial_ok]
assert {$sync_partial == 0}
$R(0) REPLICAOF $R_host(1) $R_port(1)
wait_for_condition 50 1000 {
[status $R(1) sync_partial_ok] == 1
} else {
fail "The new master was not able to partial sync"
}
}
}}
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