Heritrix: Internet Archive Web Crawler

UI i s showing incorecct nubmer of active thread.
for me the easiest way to reproduce this error is to
pause a running crawl. Some times the counter will show
even negative number of active threads.
Example of threads report:
Toe threads report - 200409232218
Job being crawled: E04-CRAWL-50-RESCUE
Number of toe threads in pool: 200 (13 active)
ToeThread #0
#0 [no CrawlURI]
WAITING for 6m35s150ms
Where: PAUSING
ToeThread #1
#1 [no CrawlURI]
WAITING for 6m1s475ms
Where: PAUSING
ToeThread #2
#2 [no CrawlURI]
WAITING for 5m47s469ms
Where: PAUSING
ToeThread #3
#3 [no CrawlURI]
WAITING for 5m34s396ms
Where: PAUSING
ToeThread #4
#4 [no CrawlURI]
WAITING for 6m31s48ms
Where: PAUSING
ToeThread #5
#5 [no CrawlURI]
WAITING for 6m35s534ms
Where: PAUSING
ToeThread #6
#6 [no CrawlURI]
WAITING for 8m18s481ms
Where: PAUSING
ToeThread #7
#7 [no CrawlURI]
WAITING for 5m43s747ms
Where: PAUSING
ToeThread #8
#8 [no CrawlURI]
WAITING for 6m6s323ms
Where: PAUSING
ToeThread #9
#9 [no CrawlURI]
WAITING for 6m23s756ms
Where: PAUSING
ToeThread #10
#10 [no CrawlURI]
WAITING for 6m21s721ms
Where: PAUSING
ToeThread #11
#11 [no CrawlURI]
WAITING for 6m8s459ms
Where: PAUSING
ToeThread #12
#12 [no CrawlURI]
WAITING for 5m34s387ms
Where: PAUSING
ToeThread #13
#13 [no CrawlURI]
WAITING for 6m10s185ms
Where: PAUSING
ToeThread #14
#14 [no CrawlURI]
WAITING for 6m26s436ms
Where: PAUSING
ToeThread #15
#15 [no CrawlURI]
WAITING for 6m11s328ms
Where: PAUSING
ToeThread #16
#16 [no CrawlURI]
WAITING for 6m7s179ms
Where: PAUSING
ToeThread #17
#17 [no CrawlURI]
WAITING for 5m47s15ms
Where: PAUSING
ToeThread #18
#18 [no CrawlURI]
WAITING for 6m16s716ms
Where: PAUSING
ToeThread #19
#19 [no CrawlURI]
WAITING for 5m47s489ms
Where: PAUSING
ToeThread #20
#20 [no CrawlURI]
WAITING for 5m32s287ms
Where: PAUSING
ToeThread #21
#21 [no CrawlURI]
WAITING for 5m54s785ms
Where: PAUSING
ToeThread #22
#22 [no CrawlURI]
WAITING for 6m2s78ms
Where: PAUSING
ToeThread #23
#23 [no CrawlURI]
WAITING for 6m33s3ms
Where: PAUSING
ToeThread #24
#24 [no CrawlURI]
WAITING for 5m57s497ms
Where: PAUSING
ToeThread #25
#25 [no CrawlURI]
WAITING for 5m34s97ms
Where: PAUSING
ToeThread #26
#26 [no CrawlURI]
WAITING for 8m45s764ms
Where: PAUSING
ToeThread #27
#27 [no CrawlURI]
WAITING for 5m47s15ms
Where: PAUSING
ToeThread #28
#28 [no CrawlURI]
WAITING for 6m42s350ms
Where: PAUSING
ToeThread #29
#29 [no CrawlURI]
WAITING for 5m54s586ms
Where: PAUSING
ToeThread #30
#30 [no CrawlURI]
WAITING for 5m31s937ms
Where: PAUSING
ToeThread #31
#31 [no CrawlURI]
WAITING for 5m44s896ms
Where: PAUSING
ToeThread #32
#32 [no CrawlURI]
WAITING for 6m27s87ms
Where: PAUSING
ToeThread #33
#33 [no CrawlURI]
WAITING for 6m21s449ms
Where: PAUSING
ToeThread #34
#34 [no CrawlURI]
WAITING for 6m17s881ms
Where: PAUSING
ToeThread #35
#35 [no CrawlURI]
WAITING for 5m33s757ms
Where: PAUSING
ToeThread #36
#36 [no CrawlURI]
WAITING for 5m51s946ms
Where: PAUSING
ToeThread #37
#37 [no CrawlURI]
WAITING for 6m26s875ms
Where: PAUSING
ToeThread #38
#38 [no CrawlURI]
WAITING for 6m14s963ms
Where: PAUSING
ToeThread #39
#39 [no CrawlURI]
WAITING for 6m10s184ms
Where: PAUSING
ToeThread #40
#40 [no CrawlURI]
WAITING for 5m57s979ms
Where: PAUSING
ToeThread #41
#41 [no CrawlURI]
WAITING for 6m11s405ms
Where: PAUSING
ToeThread #42
#42 [no CrawlURI]
WAITING for 6m835ms
Where: PAUSING
ToeThread #43
#43 [no CrawlURI]
WAITING for 7m26s27ms
Where: PAUSING
ToeThread #44
#44 [no CrawlURI]
WAITING for 5m50s372ms
Where: PAUSING
ToeThread #45
#45 [no CrawlURI]
WAITING for 5m44s603ms
Where: PAUSING
ToeThread #46
#46 [no CrawlURI]
WAITING for 6m2s316ms
Where: PAUSING
ToeThread #47
#47 [no CrawlURI]
WAITING for 5m58s600ms
Where: PAUSING
ToeThread #48
#48 [no CrawlURI]
WAITING for 5m34s96ms
Where: PAUSING
ToeThread #49
#49 [no CrawlURI]
WAITING for 5m33s227ms
Where: PAUSING
ToeThread #50
#50 [no CrawlURI]
WAITING for 5m48s750ms
Where: PAUSING
ToeThread #51
#51 [no CrawlURI]
WAITING for 6m48s153ms
Where: PAUSING
ToeThread #52
#52 [no CrawlURI]
WAITING for 5m50s898ms
Where: PAUSING
ToeThread #53
#53 [no CrawlURI]
WAITING for 6m25s790ms
Where: PAUSING
ToeThread #54
#54 [no CrawlURI]
WAITING for 5m50s787ms
Where: PAUSING
ToeThread #55
#55 [no CrawlURI]
WAITING for 5m31s936ms
Where: PAUSING
ToeThread #56
#56 [no CrawlURI]
WAITING for 6m45s790ms
Where: PAUSING
ToeThread #57
#57 [no CrawlURI]
WAITING for 6m33s994ms
Where: PAUSING
ToeThread #58
#58 [no CrawlURI]
WAITING for 5m55s676ms
Where: PAUSING
ToeThread #59
#59 [no CrawlURI]
WAITING for 6m5s323ms
Where: PAUSING
ToeThread #60
#60 [no CrawlURI]
WAITING for 5m34s397ms
Where: PAUSING
ToeThread #61
#61 [no CrawlURI]
WAITING for 6m15s818ms
Where: PAUSING
ToeThread #62
#62 [no CrawlURI]
WAITING for 7m4s165ms
Where: PAUSING
ToeThread #63
#63 [no CrawlURI]
WAITING for 6m15s106ms
Where: PAUSING
ToeThread #64
#64 [no CrawlURI]
WAITING for 6m5s324ms
Where: PAUSING
ToeThread #65
#65 [no CrawlURI]
WAITING for 6m4s903ms
Where: PAUSING
ToeThread #66
#66 [no CrawlURI]
WAITING for 6m31s213ms
Where: PAUSING
ToeThread #67
#67 [no CrawlURI]
WAITING for 7m35s799ms
Where: PAUSING
ToeThread #68
#68 [no CrawlURI]
WAITING for 6m40s281ms
Where: PAUSING
ToeThread #69
#69 [no CrawlURI]
WAITING for 7m51s521ms
Where: PAUSING
ToeThread #70
#70 [no CrawlURI]
WAITING for 5m46s832ms
Where: PAUSING
ToeThread #71
#71 [no CrawlURI]
WAITING for 5m44s706ms
Where: PAUSING
ToeThread #72
#72 [no CrawlURI]
WAITING for 7m20s916ms
Where: PAUSING
ToeThread #73
#73 [no CrawlURI]
WAITING for 5m59s602ms
Where: PAUSING
ToeThread #74
#74 [no CrawlURI]
WAITING for 5m50s223ms
Where: PAUSING
ToeThread #75
#75 [no CrawlURI]
WAITING for 5m56s823ms
Where: PAUSING
ToeThread #76
#76 [no CrawlURI]
WAITING for 5m43s551ms
Where: PAUSING
ToeThread #77
#77 [no CrawlURI]
WAITING for 5m32s286ms
Where: PAUSING
ToeThread #78
#78 [no CrawlURI]
WAITING for 5m50s969ms
Where: PAUSING
ToeThread #79
#79 [no CrawlURI]
WAITING for 6m38s535ms
Where: PAUSING
ToeThread #80
#80 [no CrawlURI]
WAITING for 6m8s407ms
Where: PAUSING
ToeThread #81
#81 [no CrawlURI]
WAITING for 6m23s516ms
Where: PAUSING
ToeThread #82
#82 [no CrawlURI]
WAITING for 5m59s356ms
Where: PAUSING
ToeThread #83
#83 [no CrawlURI]
WAITING for 5m44s9ms
Where: PAUSING
ToeThread #84
#84 [no CrawlURI]
WAITING for 6m1s638ms
Where: PAUSING
ToeThread #85
#85 [no CrawlURI]
WAITING for 5m44s473ms
Where: PAUSING
ToeThread #86
#86 [no CrawlURI]
WAITING for 5m55s127ms
Where: PAUSING
ToeThread #87
#87 [no CrawlURI]
WAITING for 5m56s900ms
Where: PAUSING
ToeThread #88
#88 [no CrawlURI]
WAITING for 5m51s785ms
Where: PAUSING
ToeThread #89
#89 [no CrawlURI]
WAITING for 5m46s580ms
Where: PAUSING
ToeThread #90
#90 [no CrawlURI]
WAITING for 6m58s858ms
Where: PAUSING
ToeThread #91
#91 [no CrawlURI]
WAITING for 5m54s383ms
Where: PAUSING
ToeThread #92
#92 [no CrawlURI]
WAITING for 5m54s373ms
Where: PAUSING
ToeThread #93
#93 [no CrawlURI]
WAITING for 6m17s456ms
Where: PAUSING
ToeThread #94
#94 [no CrawlURI]
WAITING for 6m4s585ms
Where: PAUSING
ToeThread #95
#95 [no CrawlURI]
WAITING for 7m36s479ms
Where: PAUSING
ToeThread #96
#96 [no CrawlURI]
WAITING for 6m21s625ms
Where: PAUSING
ToeThread #97
#97 [no CrawlURI]
WAITING for 6m16s761ms
Where: PAUSING
ToeThread #98
#98 [no CrawlURI]
WAITING for 6m4s567ms
Where: PAUSING
ToeThread #99
#99 [no CrawlURI]
WAITING for 5m33s667ms
Where: PAUSING
ToeThread #100
#100 [no CrawlURI]
WAITING for 5m44s949ms
Where: PAUSING
ToeThread #101
#101 [no CrawlURI]
WAITING for 6m34s176ms
Where: PAUSING
ToeThread #102
#102 [no CrawlURI]
WAITING for 5m43s987ms
Where: PAUSING
ToeThread #103
#103 [no CrawlURI]
WAITING for 5m56s399ms
Where: PAUSING
ToeThread #104
#104 [no CrawlURI]
WAITING for 7m30s317ms
Where: PAUSING
ToeThread #105
#105 [no CrawlURI]
WAITING for 7m18s883ms
Where: PAUSING
ToeThread #106
#106 [no CrawlURI]
WAITING for 6m5s887ms
Where: PAUSING
ToeThread #107
#107 [no CrawlURI]
WAITING for 7m48s813ms
Where: PAUSING
ToeThread #108
#108 [no CrawlURI]
WAITING for 7m35s159ms
Where: PAUSING
ToeThread #109
#109 [no CrawlURI]
WAITING for 8m7s712ms
Where: PAUSING
ToeThread #110
#110 [no CrawlURI]
WAITING for 6m24s265ms
Where: PAUSING
ToeThread #111
#111 [no CrawlURI]
WAITING for 6m27s934ms
Where: PAUSING
ToeThread #112
#112 [no CrawlURI]
WAITING for 5m33s488ms
Where: PAUSING
ToeThread #113
#113 [no CrawlURI]
WAITING for 6m45s791ms
Where: PAUSING
ToeThread #114
#114 [no CrawlURI]
WAITING for 5m43s794ms
Where: PAUSING
ToeThread #115
#115 [no CrawlURI]
WAITING for 5m48s450ms
Where: PAUSING
ToeThread #116
#116 [no CrawlURI]
WAITING for 5m46s483ms
Where: PAUSING
ToeThread #117
#117 [no CrawlURI]
WAITING for 5m56s688ms
Where: PAUSING
ToeThread #118
#118 [no CrawlURI]
WAITING for 5m51s786ms
Where: PAUSING
ToeThread #119
#119 [no CrawlURI]
WAITING for 6m41s586ms
Where: PAUSING
ToeThread #120
#120 [no CrawlURI]
WAITING for 5m58s75ms
Where: PAUSING
ToeThread #121
#121 [no CrawlURI]
WAITING for 8m26s192ms
Where: PAUSING
ToeThread #122
#122 [no CrawlURI]
WAITING for 5m33s958ms
Where: PAUSING
ToeThread #123
#123 [no CrawlURI]
WAITING for 6m3s330ms
Where: PAUSING
ToeThread #124
#124 [no CrawlURI]
WAITING for 6m10s376ms
Where: PAUSING
ToeThread #125
#125 [no CrawlURI]
WAITING for 6m42s870ms
Where: PAUSING
ToeThread #126
#126 [no CrawlURI]
WAITING for 5m44s302ms
Where: PAUSING
ToeThread #127
#127 [no CrawlURI]
WAITING for 5m52s159ms
Where: PAUSING
ToeThread #128
#128 [no CrawlURI]
WAITING for 5m32s286ms
Where: PAUSING
ToeThread #129
#129 [no CrawlURI]
WAITING for 5m51s566ms
Where: PAUSING
ToeThread #130
#130 [no CrawlURI]
WAITING for 5m52s214ms
Where: PAUSING
ToeThread #131
#131 [no CrawlURI]
WAITING for 6m23s616ms
Where: PAUSING
ToeThread #132
#132 [no CrawlURI]
WAITING for 6m15s817ms
Where: PAUSING
ToeThread #133
#133 [no CrawlURI]
WAITING for 6m25s932ms
Where: PAUSING
ToeThread #134
#134 [no CrawlURI]
WAITING for 6m19s826ms
Where: PAUSING
ToeThread #135
#135 [no CrawlURI]
WAITING for 5m46s691ms
Where: PAUSING
ToeThread #136
#136 [no CrawlURI]
WAITING for 5m51s37ms
Where: PAUSING
ToeThread #137
#137 [no CrawlURI]
WAITING for 7m34s242ms
Where: PAUSING
ToeThread #138
#138 [no CrawlURI]
WAITING for 6m5s480ms
Where: PAUSING
ToeThread #139
#139 [no CrawlURI]
WAITING for 5m32s728ms
Where: PAUSING
ToeThread #140
#140 [no CrawlURI]
WAITING for 7m32s388ms
Where: PAUSING
ToeThread #141
#141 [no CrawlURI]
WAITING for 6m13s84ms
Where: PAUSING
ToeThread #142
#142 [no CrawlURI]
WAITING for 6m13s84ms
Where: PAUSING
ToeThread #143
#143 [no CrawlURI]
WAITING for 6m6s984ms
Where: PAUSING
ToeThread #144
#144 [no CrawlURI]
WAITING for 6m57s887ms
Where: PAUSING
ToeThread #145
#145 [no CrawlURI]
WAITING for 6m29s680ms
Where: PAUSING
ToeThread #146
#146 [no CrawlURI]
WAITING for 6m6s983ms
Where: PAUSING
ToeThread #147
#147 [no CrawlURI]
WAITING for 6m5s250ms
Where: PAUSING
ToeThread #148
#148 [no CrawlURI]
WAITING for 5m44s419ms
Where: PAUSING
ToeThread #149
#149 [no CrawlURI]
WAITING for 5m53s473ms
Where: PAUSING
ToeThread #150
#150 [no CrawlURI]
WAITING for 6m30s990ms
Where: PAUSING
ToeThread #151
#151 [no CrawlURI]
WAITING for 6m21s816ms
Where: PAUSING
ToeThread #152
#152 [no CrawlURI]
WAITING for 6m1s842ms
Where: PAUSING
ToeThread #153
#153 [no CrawlURI]
WAITING for 5m44s472ms
Where: PAUSING
ToeThread #154
#154 [no CrawlURI]
WAITING for 8m10s641ms
Where: PAUSING
ToeThread #155
#155 [no CrawlURI]
WAITING for 6m12s958ms
Where: PAUSING
ToeThread #156
#156 [no CrawlURI]
WAITING for 5m32s688ms
Where: PAUSING
ToeThread #157
#157 [no CrawlURI]
WAITING for 8m15s792ms
Where: PAUSING
ToeThread #158
#158 [no CrawlURI]
WAITING for 7m7s72ms
Where: PAUSING
ToeThread #159
#159 [no CrawlURI]
WAITING for 6m199ms
Where: PAUSING
ToeThread #160
#160 [no CrawlURI]
WAITING for 6m333ms
Where: PAUSING
ToeThread #161
#161 [no CrawlURI]
WAITING for 5m46s276ms
Where: PAUSING
ToeThread #162
#162 [no CrawlURI]
WAITING for 6m12s82ms
Where: PAUSING
ToeThread #163
#163 [no CrawlURI]
WAITING for 6m2s736ms
Where: PAUSING
ToeThread #164
#164 [no CrawlURI]
WAITING for 5m47s57ms
Where: PAUSING
ToeThread #165
#165 [no CrawlURI]
WAITING for 6m13s489ms
Where: PAUSING
ToeThread #166
#166 [no CrawlURI]
WAITING for 6m5s231ms
Where: PAUSING
ToeThread #167
#167 [no CrawlURI]
WAITING for 6m25s762ms
Where: PAUSING
ToeThread #168
#168 [no CrawlURI]
WAITING for 5m48s571ms
Where: PAUSING
ToeThread #169
#169 [no CrawlURI]
WAITING for 5m49s191ms
Where: PAUSING
ToeThread #170
#170 [no CrawlURI]
WAITING for 6m24s709ms
Where: PAUSING
ToeThread #171
#171 [no CrawlURI]
WAITING for 5m46s128ms
Where: PAUSING
ToeThread #172
#172 [no CrawlURI]
WAITING for 5m33s667ms
Where: PAUSING
ToeThread #173
#173 [no CrawlURI]
WAITING for 5m58s576ms
Where: PAUSING
ToeThread #174
#174 [no CrawlURI]
WAITING for 5m49s680ms
Where: PAUSING
ToeThread #175
#175 [no CrawlURI]
WAITING for 6m3s436ms
Where: PAUSING
ToeThread #176
#176 [no CrawlURI]
WAITING for 6m35s539ms
Where: PAUSING
ToeThread #177
#177 [no CrawlURI]
WAITING for 5m45s229ms
Where: PAUSING
ToeThread #178
#178 [no CrawlURI]
WAITING for 6m12s238ms
Where: PAUSING
ToeThread #179
#179 [no CrawlURI]
WAITING for 6m20s343ms
Where: PAUSING
ToeThread #180
#180 [no CrawlURI]
WAITING for 6m20s343ms
Where: PAUSING
ToeThread #181
#181 [no CrawlURI]
WAITING for 9m58s214ms
Where: PAUSING
ToeThread #182
#182 [no CrawlURI]
WAITING for 5m46s20ms
Where: PAUSING
ToeThread #183
#183 [no CrawlURI]
WAITING for 5m47s16ms
Where: PAUSING
ToeThread #184
#184 [no CrawlURI]
WAITING for 6m5s237ms
Where: PAUSING
ToeThread #185
#185 [no CrawlURI]
WAITING for 6m20s373ms
Where: PAUSING
ToeThread #186
#186 [no CrawlURI]
WAITING for 6m49s619ms
Where: PAUSING
ToeThread #187
#187 [no CrawlURI]
WAITING for 6m12s238ms
Where: PAUSING
ToeThread #188
#188 [no CrawlURI]
WAITING for 6m35s919ms
Where: PAUSING
ToeThread #189
#189 [no CrawlURI]
WAITING for 5m32s128ms
Where: PAUSING
ToeThread #190
#190 [no CrawlURI]
WAITING for 6m53s543ms
Where: PAUSING
ToeThread #191
#191 [no CrawlURI]
WAITING for 6m35s478ms
Where: PAUSING
ToeThread #192
#192 [no CrawlURI]
WAITING for 5m32s268ms
Where: PAUSING
ToeThread #193
#193 [no CrawlURI]
WAITING for 6m8s708ms
Where: PAUSING
ToeThread #194
#194 [no CrawlURI]
WAITING for 6m33s430ms
Where: PAUSING
ToeThread #195
#195 [no CrawlURI]
WAITING for 7m1s543ms
Where: PAUSING
ToeThread #196
#196 [no CrawlURI]
WAITING for 6m8s11ms
Where: PAUSING
ToeThread #197
#197 [no CrawlURI]
WAITING for 5m49s357ms
Where: PAUSING
ToeThread #198
#198 [no CrawlURI]
WAITING for 5m57s774ms
Where: PAUSING
ToeThread #199
#199 [no CrawlURI]
WAITING for 3m13s504ms
Where: PAUSING