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annotate memcached_keepalive.t @ 572:ca54b445d982

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Tests: masked nginx bug in proxy next upstream. When iterating through several next upstreams per a worker cycle, a previously reported event about upstream connection error may be improperly applied to the next upstream, thus leading to the invalid connection error. E.g., in kqueue, where the problem is visible, this is caused by "ev->instance" that does not tolerate more than one next upstream at once, and kevents placed on the kqueue separately for read and write events. The change is to limit test case to the only one next upstream.
author Sergey Kandaurov <pluknet@nginx.com>
date Thu, 14 May 2015 11:54:24 +0300
parents 1a73389a19c4
children c0b4ae82fd9d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #!/usr/bin/perl
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2
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3 # (C) Maxim Dounin
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4
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5 # Test for memcached with keepalive.
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6
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7 ###############################################################################
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8
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9 use warnings;
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10 use strict;
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11
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12 use Test::More;
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13
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14 BEGIN { use FindBin; chdir($FindBin::Bin); }
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15
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16 use lib 'lib';
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17 use Test::Nginx;
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18
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19 ###############################################################################
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20
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21 select STDERR; $| = 1;
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22 select STDOUT; $| = 1;
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23
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24 eval { require Cache::Memcached; };
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25 plan(skip_all => 'Cache::Memcached not installed') if $@;
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26
275
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27 my $t = Test::Nginx->new()->has(qw/http memcached upstream_keepalive rewrite/)
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28 ->has_daemon('memcached')->plan(16)
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29 ->write_file_expand('nginx.conf', <<'EOF');
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30
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31 %%TEST_GLOBALS%%
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32
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33 daemon off;
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34
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35 events {
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36 }
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37
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38 http {
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39 %%TEST_GLOBALS_HTTP%%
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40
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41 upstream memd {
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42 server 127.0.0.1:8081;
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43 keepalive 1;
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44 }
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45
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46 upstream memd3 {
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47 server 127.0.0.1:8081;
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48 server 127.0.0.1:8082;
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49 keepalive 1;
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50 }
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51
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52 upstream memd4 {
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53 server 127.0.0.1:8081;
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54 server 127.0.0.1:8082;
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55 keepalive 10;
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56 }
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57
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58 server {
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59 listen 127.0.0.1:8080;
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60 server_name localhost;
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61
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62 location / {
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63 set $memcached_key $uri;
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64 memcached_pass memd;
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65 }
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66
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67 location /next {
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68 set $memcached_key $uri;
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69 memcached_next_upstream not_found;
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70 memcached_pass memd;
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71 }
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72
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73 location /memd3 {
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74 set $memcached_key "/";
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75 memcached_pass memd3;
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76 }
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77
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78 location /memd4 {
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79 set $memcached_key "/";
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80 memcached_pass memd4;
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81 }
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82 }
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83 }
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84
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85 EOF
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86
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87 my $memhelp = `memcached -h`;
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88 my @memopts1 = ();
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89 my @memopts2 = ();
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90
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91 if ($memhelp =~ /repcached/) {
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92 # repcached patches adds additional listen socket memcached
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93 # that should be different too
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94
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95 push @memopts1, '-X', '8091';
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96 push @memopts2, '-X', '8092';
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97 }
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98 if ($memhelp =~ /-U/) {
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99 # UDP ports no longer off by default in memcached 1.2.7+
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100
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101 push @memopts1, '-U', '0';
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102 push @memopts2, '-U', '0';
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103 }
513
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104 if ($memhelp =~ /-t/) {
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105 # for connection stats consistency in threaded memcached 1.3+
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106
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107 push @memopts1, '-t', '1';
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108 push @memopts2, '-t', '1';
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109 }
250
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110
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111 $t->run_daemon('memcached', '-l', '127.0.0.1', '-p', '8081', @memopts1);
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112 $t->run_daemon('memcached', '-l', '127.0.0.1', '-p', '8082', @memopts2);
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113
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114 $t->run();
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115
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116 $t->waitforsocket('127.0.0.1:8081')
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117 or die "Unable to start memcached";
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118 $t->waitforsocket('127.0.0.1:8082')
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119 or die "Unable to start second memcached";
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120
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121 ###############################################################################
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122
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123 my $memd1 = Cache::Memcached->new(servers => [ '127.0.0.1:8081' ]);
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124 my $memd2 = Cache::Memcached->new(servers => [ '127.0.0.1:8082' ]);
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125
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126 $memd1->set('/', 'SEE-THIS');
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127 $memd2->set('/', 'SEE-THIS');
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128 $memd1->set('/big', 'X' x 1000000);
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129
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130 my $total = $memd1->stats()->{total}->{total_connections};
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131
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132 like(http_get('/'), qr/SEE-THIS/, 'keepalive memcached request');
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133 like(http_get('/notfound'), qr/ 404 /, 'keepalive memcached not found');
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134 like(http_get('/next'), qr/ 404 /,
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135 'keepalive not found with memcached_next_upstream');
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136 like(http_get('/'), qr/SEE-THIS/, 'keepalive memcached request again');
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137 like(http_get('/'), qr/SEE-THIS/, 'keepalive memcached request again');
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138 like(http_get('/'), qr/SEE-THIS/, 'keepalive memcached request again');
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139
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140 is($memd1->stats()->{total}->{total_connections}, $total + 1,
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141 'only one connection used');
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142
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143 # Since nginx doesn't read all data from connection in some situations (head
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144 # requests, post_action, errors writing to client) we have to close such
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145 # connections. Check if we really do close them.
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146
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147 $total = $memd1->stats()->{total}->{total_connections};
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148
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149 unlike(http_head('/'), qr/SEE-THIS/, 'head request');
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150 like(http_get('/'), qr/SEE-THIS/, 'get after head');
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151
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152 is($memd1->stats()->{total}->{total_connections}, $total + 1,
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153 'head request closes connection');
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154
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155 $total = $memd1->stats()->{total}->{total_connections};
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156
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157 unlike(http_head('/big'), qr/XXX/, 'big head');
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158 like(http_get('/'), qr/SEE-THIS/, 'get after big head');
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159
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160 is($memd1->stats()->{total}->{total_connections}, $total + 1,
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161 'big head request closes connection');
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162
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163 # two backends with maximum number of cached connections set to 1,
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164 # should establish new connection on each request
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165
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166 $total = $memd1->stats()->{total}->{total_connections} +
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167 $memd2->stats()->{total}->{total_connections};
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168
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169 http_get('/memd3');
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170 http_get('/memd3');
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171 http_get('/memd3');
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172
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173 is($memd1->stats()->{total}->{total_connections} +
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174 $memd2->stats()->{total}->{total_connections}, $total + 3,
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175 '3 connections should be established');
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176
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177 # two backends with maximum number of cached connections set to 10,
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178 # should establish only two connections (1 per backend)
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179
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180 $total = $memd1->stats()->{total}->{total_connections} +
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181 $memd2->stats()->{total}->{total_connections};
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182
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183 http_get('/memd4');
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184 http_get('/memd4');
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185 http_get('/memd4');
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186
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187 is($memd1->stats()->{total}->{total_connections} +
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188 $memd2->stats()->{total}->{total_connections}, $total + 2,
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189 'connection per backend');
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190
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191 $t->stop();
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192
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193 like(`grep -F '[alert]' ${\($t->testdir())}/error.log`, qr/^$/s, 'no alerts');
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194
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195 ###############################################################################