I hit this while running tests for (hopefully unrelated) changes locally. The full failure message was:
should handle rebalance *** FAILED *** (5 minutes, 11 seconds)
[info] 200 equaled 200, but Map("key-198" -> 1, "key-78" -> 3, "key-89" -> 2, "key-105" -> 1, "key-123" -> 1, "key-93" -> 2, "key-112" -> 2, "key-8" -> 2, "key-44" -> 2, "key-74" -> 2, "key-0" -> 2, "key-116" -> 2, "key-85" -> 3, "key-169" -> 1, "key-187" -> 1, "key-152" -> 1, "key-119" -> 1, "key-108" -> 1, "key-27" -> 3, "key-22" -> 2, "key-176" -> 1, "key-11" -> 2, "key-59" -> 2, "key-49" -> 3, "key-163" -> 1, "key-43" -> 2, "key-166" -> 2, "key-38" -> 3, "key-100" -> 1, "key-71" -> 3, "key-170" -> 1, "key-127" -> 1, "key-138" -> 1, "key-155" -> 1, "key-96" -> 2, "key-82" -> 2, "key-181" -> 1, "key-32" -> 2, "key-16" -> 2, "key-193" -> 1, "key-192" -> 2, "key-159" -> 2, "key-134" -> 2, "key-148" -> 2, "key-144" -> 1, "key-62" -> 2, "key-5" -> 3, "key-67" -> 3, "key-51" -> 2, "key-111" -> 1, "key-188" -> 2, "key-177" -> 2, "key-196" -> 1, "key-115" -> 1, "key-79" -> 3, "key-42" -> 2, "key-104" -> 1, "key-31" -> 2, "key-122" -> 1, "key-56" -> 2, "key-28" -> 2, "key-58" -> 3, "key-10" -> 3, "key-75" -> 2, "key-109" -> 1, "key-69" -> 2, "key-97" -> 2, "key-185" -> 1, "key-21" -> 2, "key-17" -> 2, "key-174" -> 1, "key-92" -> 3, "key-199" -> 2, "key-86" -> 2, "key-110" -> 1, "key-81" -> 2, "key-70" -> 3, "key-158" -> 1, "key-143" -> 1, "key-126" -> 1, "key-39" -> 3, "key-9" -> 2, "key-180" -> 1, "key-147" -> 1, "key-63" -> 3, "key-137" -> 1, "key-121" -> 2, "key-68" -> 2, "key-133" -> 2, "key-165" -> 1, "key-191" -> 1, "key-46" -> 3, "key-57" -> 2, "key-35" -> 2, "key-2" -> 3, "key-154" -> 1, "key-52" -> 2, "key-4" -> 2, "key-146" -> 1, "key-106" -> 1, "key-157" -> 1, "key-94" -> 2, "key-25" -> 3, "key-178" -> 2, "key-24" -> 3, "key-140" -> 2, "key-30" -> 3, "key-14" -> 2, "key-195" -> 1, "key-72" -> 2, "key-87" -> 2, "key-161" -> 1, "key-168" -> 1, "key-189" -> 2, "key-150" -> 2, "key-41" -> 3, "key-117" -> 1, "key-153" -> 1, "key-91" -> 2, "key-13" -> 2, "key-173" -> 1, "key-76" -> 3, "key-114" -> 1, "key-131" -> 1, "key-164" -> 1, "key-184" -> 2, "key-103" -> 1, "key-120" -> 1, "key-64" -> 2, "key-125" -> 2, "key-65" -> 2, "key-54" -> 2, "key-80" -> 2, "key-47" -> 2, "key-53" -> 2, "key-190" -> 2, "key-160" -> 1, "key-132" -> 1, "key-139" -> 1, "key-142" -> 2, "key-136" -> 1, "key-1" -> 2, "key-3" -> 3, "key-29" -> 2, "key-98" -> 3, "key-18" -> 3, "key-34" -> 3, "key-20" -> 2, "key-36" -> 2, "key-83" -> 2, "key-45" -> 2, "key-128" -> 2, "key-95" -> 3, "key-40" -> 2, "key-183" -> 1, "key-7" -> 2, "key-15" -> 2, "key-130" -> 1, "key-88" -> 2, "key-26" -> 2, "key-118" -> 2, "key-141" -> 2, "key-77" -> 3, "key-107" -> 1, "key-102" -> 1, "key-182" -> 2, "key-23" -> 3, "key-162" -> 2, "key-90" -> 2, "key-60" -> 2, "key-151" -> 1, "key-12" -> 3, "key-171" -> 1, "key-113" -> 2, "key-194" -> 1, "key-33" -> 3, "key-55" -> 2, "key-48" -> 3, "key-135" -> 1, "key-156" -> 1, "key-197" -> 1, "key-66" -> 3, "key-101" -> 2, "key-175" -> 2, "key-37" -> 2, "key-124" -> 1, "key-167" -> 1, "key-99" -> 2, "key-50" -> 3, "key-129" -> 2, "key-172" -> 1, "key-149" -> 1, "key-19" -> 2, "key-61" -> 2, "key-6" -> 3, "key-84" -> 2, "key-186" -> 2, "key-179" -> 1, "key-145" -> 1, "key-73" -> 3) did not equal Map("key-198" -> 1, "key-78" -> 2, "key-89" -> 2, "key-105" -> 1, "key-123" -> 1, "key-93" -> 2, "key-112" -> 1, "key-8" -> 2, "key-44" -> 2, "key-74" -> 2, "key-0" -> 2, "key-116" -> 1, "key-85" -> 2, "key-169" -> 1, "key-187" -> 1, "key-152" -> 1, "key-119" -> 1, "key-108" -> 1, "key-27" -> 2, "key-22" -> 2, "key-176" -> 1, "key-11" -> 2, "key-59" -> 2, "key-49" -> 2, "key-163" -> 1, "key-43" -> 2, "key-166" -> 1, "key-38" -> 2, "key-100" -> 1, "key-71" -> 2, "key-170" -> 1, "key-127" -> 1, "key-138" -> 1, "key-155" -> 1, "key-96" -> 2, "key-82" -> 2, "key-181" -> 1, "key-32" -> 2, "key-16" -> 2, "key-193" -> 1, "key-192" -> 1, "key-159" -> 1, "key-134" -> 1, "key-148" -> 1, "key-144" -> 1, "key-62" -> 2, "key-5" -> 2, "key-67" -> 2, "key-51" -> 2, "key-111" -> 1, "key-188" -> 1, "key-177" -> 1, "key-196" -> 1, "key-115" -> 1, "key-79" -> 2, "key-42" -> 2, "key-104" -> 1, "key-31" -> 2, "key-122" -> 1, "key-56" -> 2, "key-28" -> 2, "key-58" -> 2, "key-10" -> 2, "key-75" -> 2, "key-109" -> 1, "key-69" -> 2, "key-97" -> 2, "key-185" -> 1, "key-21" -> 2, "key-17" -> 2, "key-174" -> 1, "key-92" -> 2, "key-199" -> 1, "key-86" -> 2, "key-110" -> 1, "key-81" -> 2, "key-70" -> 2, "key-158" -> 1, "key-143" -> 1, "key-126" -> 1, "key-39" -> 2, "key-9" -> 2, "key-180" -> 1, "key-147" -> 1, "key-63" -> 2, "key-137" -> 1, "key-121" -> 1, "key-68" -> 2, "key-133" -> 1, "key-165" -> 1, "key-191" -> 1, "key-46" -> 2, "key-57" -> 2, "key-35" -> 2, "key-2" -> 2, "key-154" -> 1, "key-52" -> 2, "key-4" -> 2, "key-146" -> 1, "key-106" -> 1, "key-157" -> 1, "key-94" -> 2, "key-25" -> 2, "key-178" -> 1, "key-24" -> 2, "key-140" -> 1, "key-30" -> 2, "key-14" -> 2, "key-195" -> 1, "key-72" -> 2, "key-87" -> 2, "key-161" -> 1, "key-168" -> 1, "key-189" -> 1, "key-150" -> 1, "key-41" -> 2, "key-117" -> 1, "key-153" -> 1, "key-91" -> 2, "key-13" -> 2, "key-173" -> 1, "key-76" -> 2, "key-114" -> 1, "key-131" -> 1, "key-164" -> 1, "key-184" -> 1, "key-103" -> 1, "key-120" -> 1, "key-64" -> 2, "key-125" -> 1, "key-65" -> 2, "key-54" -> 2, "key-80" -> 2, "key-47" -> 2, "key-53" -> 2, "key-190" -> 1, "key-160" -> 1, "key-132" -> 1, "key-139" -> 1, "key-142" -> 1, "key-136" -> 1, "key-1" -> 2, "key-3" -> 2, "key-29" -> 2, "key-98" -> 2, "key-18" -> 2, "key-34" -> 2, "key-20" -> 2, "key-36" -> 2, "key-83" -> 2, "key-45" -> 2, "key-128" -> 1, "key-95" -> 2, "key-40" -> 2, "key-183" -> 1, "key-7" -> 2, "key-15" -> 2, "key-130" -> 1, "key-88" -> 2, "key-26" -> 2, "key-118" -> 1, "key-141" -> 1, "key-77" -> 2, "key-107" -> 1, "key-102" -> 1, "key-182" -> 1, "key-23" -> 2, "key-162" -> 1, "key-90" -> 2, "key-60" -> 2, "key-151" -> 1, "key-12" -> 2, "key-171" -> 1, "key-113" -> 1, "key-194" -> 1, "key-33" -> 2, "key-55" -> 2, "key-48" -> 2, "key-135" -> 1, "key-156" -> 1, "key-197" -> 1, "key-66" -> 2, "key-101" -> 1, "key-175" -> 1, "key-37" -> 2, "key-124" -> 1, "key-167" -> 1, "key-99" -> 2, "key-50" -> 2, "key-129" -> 1, "key-172" -> 1, "key-149" -> 1, "key-19" -> 2, "key-61" -> 2, "key-6" -> 2, "key-84" -> 2, "key-186" -> 1, "key-179" -> 1, "key-145" -> 1, "key-73" -> 2) (KafkaConsumerSpec.scala:81)
3c3
< "key-78" -> 3,
---
> "key-78" -> 2,
8c8
< "key-112" -> 2,
---
> "key-112" -> 1,
13,14c13,14
< "key-116" -> 2,
< "key-85" -> 3,
---
> "key-116" -> 1,
> "key-85" -> 2,
20c20
< "key-27" -> 3,
---
> "key-27" -> 2,
25c25
< "key-49" -> 3,
---
> "key-49" -> 2,
28,29c28,29
< "key-166" -> 2,
< "key-38" -> 3,
---
> "key-166" -> 1,
> "key-38" -> 2,
31c31
< "key-71" -> 3,
---
> "key-71" -> 2,
42,45c42,45
< "key-192" -> 2,
< "key-159" -> 2,
< "key-134" -> 2,
< "key-148" -> 2,
---
> "key-192" -> 1,
> "key-159" -> 1,
> "key-134" -> 1,
> "key-148" -> 1,
48,49c48,49
< "key-5" -> 3,
< "key-67" -> 3,
---
> "key-5" -> 2,
> "key-67" -> 2,
52,53c52,53
< "key-188" -> 2,
< "key-177" -> 2,
---
> "key-188" -> 1,
> "key-177" -> 1,
56c56
< "key-79" -> 3,
---
> "key-79" -> 2,
63,64c63,64
< "key-58" -> 3,
< "key-10" -> 3,
---
> "key-58" -> 2,
> "key-10" -> 2,
73,74c73,74
< "key-92" -> 3,
< "key-199" -> 2,
---
> "key-92" -> 2,
> "key-199" -> 1,
78c78
< "key-70" -> 3,
---
> "key-70" -> 2,
82c82
< "key-39" -> 3,
---
> "key-39" -> 2,
86c86
< "key-63" -> 3,
---
> "key-63" -> 2,
88c88
< "key-121" -> 2,
---
> "key-121" -> 1,
90c90
< "key-133" -> 2,
---
> "key-133" -> 1,
93c93
< "key-46" -> 3,
---
> "key-46" -> 2,
96c96
< "key-2" -> 3,
---
> "key-2" -> 2,
104,108c104,108
< "key-25" -> 3,
< "key-178" -> 2,
< "key-24" -> 3,
< "key-140" -> 2,
< "key-30" -> 3,
---
> "key-25" -> 2,
> "key-178" -> 1,
> "key-24" -> 2,
> "key-140" -> 1,
> "key-30" -> 2,
115,117c115,117
< "key-189" -> 2,
< "key-150" -> 2,
< "key-41" -> 3,
---
> "key-189" -> 1,
> "key-150" -> 1,
> "key-41" -> 2,
123c123
< "key-76" -> 3,
---
> "key-76" -> 2,
127c127
< "key-184" -> 2,
---
> "key-184" -> 1,
131c131
< "key-125" -> 2,
---
> "key-125" -> 1,
137c137
< "key-190" -> 2,
---
> "key-190" -> 1,
141c141
< "key-142" -> 2,
---
> "key-142" -> 1,
144c144
< "key-3" -> 3,
---
> "key-3" -> 2,
146,148c146,148
< "key-98" -> 3,
< "key-18" -> 3,
< "key-34" -> 3,
---
> "key-98" -> 2,
> "key-18" -> 2,
> "key-34" -> 2,
153,154c153,154
< "key-128" -> 2,
< "key-95" -> 3,
---
> "key-128" -> 1,
> "key-95" -> 2,
162,164c162,164
< "key-118" -> 2,
< "key-141" -> 2,
< "key-77" -> 3,
---
> "key-118" -> 1,
> "key-141" -> 1,
> "key-77" -> 2,
167,169c167,169
< "key-182" -> 2,
< "key-23" -> 3,
< "key-162" -> 2,
---
> "key-182" -> 1,
> "key-23" -> 2,
> "key-162" -> 1,
173c173
< "key-12" -> 3,
---
> "key-12" -> 2,
175c175
< "key-113" -> 2,
---
> "key-113" -> 1,
177c177
< "key-33" -> 3,
---
> "key-33" -> 2,
179c179
< "key-48" -> 3,
---
> "key-48" -> 2,
183,185c183,185
< "key-66" -> 3,
< "key-101" -> 2,
< "key-175" -> 2,
---
> "key-66" -> 2,
> "key-101" -> 1,
> "key-175" -> 1,
190,191c190,191
< "key-50" -> 3,
< "key-129" -> 2,
---
> "key-50" -> 2,
> "key-129" -> 1,
196c196
< "key-6" -> 3,
---
> "key-6" -> 2,
198c198
< "key-186" -> 2,
---
> "key-186" -> 1,
201c201
< "key-73" -> 3
---
> "key-73" -> 2