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# See the file LICENSE for redistribution information.
#
# Copyright (c) 2006,2007 Oracle. All rights reserved.
#
# $Id: rep068.tcl,v 1.10 2007/07/11 02:15:03 moshen Exp $
#
# TEST rep068
# TEST Verify replication of dbreg operations does not hang clients.
# TEST In a simple replication group, create a database with very
# TEST little data. With DB_TXN_NOSYNC the database can be created
# TEST at the client even though the log is not flushed. If we crash
# TEST and restart, the application of the log starts over again, even
# TEST though the database is still there. The application can open
# TEST the database before replication tries to re-apply the create.
# TEST This causes a hang as replication waits to be able to get a
# TEST handle lock.
# TEST
# TEST Run for btree only because access method shouldn't matter.
# TEST
proc rep068 { method { tnum "068" } args } {
source ./include.tcl
if { $is_windows9x_test == 1 } {
puts "Skipping replication test on Win9x platform."
return
}
# Run for btree methods only.
if { $checking_valid_methods } {
set test_methods {}
foreach method $valid_methods {
if { [is_btree $method] } {
lappend test_methods $method
}
}
return $test_methods
}
if { [is_btree $method] == 0 } {
puts "Rep$tnum: skipping for non-btree method."
return
}
set args [convert_args $method $args]
set logsets [create_logsets 2]
# Run the body of the test with/without recovery and txn nosync.
foreach s {"nosync" ""} {
foreach r $test_recopts {
foreach l $logsets {
set logindex [lsearch -exact $l "in-memory"]
if { (($r == "-recover") || ($s == "nosync"))
&& ($logindex != -1) } {
puts "Skipping test with -recover or\
nosync for in-memory logs."
continue
}
# Temporary note: at the moment, this test
# fails when both "-recover" and
# "nosync" are in use, because of problems
# described in SR #15071.
if { ($r == "-recover") && ($s == "nosync") } {
puts "Skipping test with -recover or\
nosync."
continue
}
puts "Rep$tnum ($method $r $s):\
Test of dbreg lock conflicts at client"
puts "Rep$tnum: Master logs are [lindex $l 0]"
puts "Rep$tnum: Client logs are [lindex $l 1]"
rep068_sub $method $tnum $l $r $s $args
}
}
}
}
proc rep068_sub { method tnum logset recargs nosync largs } {
global testdir
global rep_verbose
set verbargs ""
if { $rep_verbose == 1 } {
set verbargs " -verbose {rep on} "
}
set KEY "any old key"
set DATA "arbitrary data"
set DBNAME "test.db"
set nosync_args [subst {-txn $nosync}]
env_cleanup $testdir
replsetup $testdir/MSGQUEUEDIR
set masterdir $testdir/MASTERDIR
set clientdir $testdir/CLIENTDIR
file mkdir $masterdir
file mkdir $clientdir
set m_logtype [lindex $logset 0]
set c_logtype [lindex $logset 1]
# In-memory logs require a large log buffer, and cannot
# be used with -txn nosync. Adjust the args for master
# and client
# There is no need to adjust txn args for this test since
# the txn args are explicitly set.
set m_logargs [adjust_logargs $m_logtype]
set c_logargs [adjust_logargs $c_logtype]
# Open a master.
repladd 1
set ma_envcmd "berkdb_env_noerr -create $m_logargs \
$verbargs -errpfx MASTER \
-home $masterdir -rep_transport \[list 1 replsend\]"
set masterenv [eval $ma_envcmd $recargs $nosync_args -rep_master]
# Open a client
repladd 2
set cl_envcmd "berkdb_env_noerr -create $c_logargs \
$verbargs -errpfx CLIENT \
-home $clientdir -rep_transport \[list 2 replsend\]"
set clientenv [eval $cl_envcmd $recargs $nosync_args -rep_client]
# Bring the client online by processing the startup messages.
set envlist "{$masterenv 1} {$clientenv 2}"
process_msgs $envlist
# Open/create a database, maybe put just one record in it
# abandon the client env, and restart it. Before trying to sync,
# open the database at the client.
set db [berkdb_open_noerr -auto_commit \
-btree -create -env $masterenv $DBNAME]
set ret [$db put $KEY $DATA]
error_check_good initial_insert $ret 0
process_msgs $envlist
# Simulate a crash and restart of the client, by simply abandoning
# the old environment handle and opening a new one.
#
puts "\tRep$tnum.a: Open a fresh handle onto the client env."
set origclientenv $clientenv
set clientenv [eval $cl_envcmd $recargs $nosync_args -rep_client]
set envlist "{$masterenv 1} {$clientenv 2}"
# We expect the db creation operation to have been flushed to the log,
# so that at this point recovery will have removed the database (since
# we expect the transaction did not commit). But the bug we are testing
# for is that the applying of replicated transactions hangs if the
# database turns out to be present. Thus, for a stringent test, we want
# to at least try to open the database, and "dare ourselves" not to hang
# if it turns out to be present.
#
if {[catch {set client_db [berkdb_open_noerr \
-auto_commit -unknown -env $clientenv $DBNAME]} result] == 0} {
puts "\t\tRep$tnum.a(ii): warning: db open at restarted client\
succeeded unexpectedly"
} else {
set client_db "NULL"
}
puts "\tRep$tnum.b: Attempting sync-up with db handle open."
process_msgs $envlist
puts "\tRep$tnum.c: Sync-up completed."
if {$client_db == "NULL"} {
set client_db [berkdb_open_noerr \
-auto_commit -unknown -env $clientenv $DBNAME]
}
set result [$client_db get $KEY]
error_check_good one_pair [llength $result] 1
set val [lindex $result 0 1]
error_check_good "value still matches" $val $DATA
puts "\tRep$tnum.d: Confirmed correct data."
$client_db close
$clientenv close
catch { $origclientenv close } res
$db close
$masterenv close
replclose $testdir/MSGQUEUEDIR
}
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