require 'mongo'

client = Mongo::Client.new('mongodb://127.0.0.1:27017/test')
db = client.database
collection = db['people']

doc = {
  name: 'Steve',
  data: '.' * 20_000
}
op_count = 3_000
doc_size = BSON::Document.new(doc).to_s.length
total_size = doc_size * op_count
puts "Size estimate: #{total_size}" # Should be > 48MB to trigger this issue

client.start_session do |session|
  session.with_transaction do
    puts "In transaction: #{session.txn_num}"
    collection.bulk_write([{insert_one: doc}] * op_count, { session: session })
  rescue => e
    puts e.inspect
    puts e.backtrace
    raise e
  end
end

Size estimate: 60087000
In transaction: 1
#<Mongo::Error::OperationFailure: [251:NoSuchTransaction]: Given transaction number 1 does not match any in-progress transactions. The active transaction number is -1 (on 127.0.0.1:27017, modern retry, attempt 1)>
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/operation/result.rb:364:in `raise_operation_failure'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/operation/result.rb:330:in `validate!'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/bulk_write/result_combiner.rb:119:in `combine_write_errors!'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/bulk_write/result_combiner.rb:109:in `combine_errors!'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/bulk_write/result_combiner.rb:71:in `combine!'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/bulk_write.rb:198:in `block (3 levels) in execute_operation'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/operation/shared/response_handling.rb:54:in `add_error_labels'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/bulk_write.rb:197:in `block (2 levels) in execute_operation'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/operation/shared/response_handling.rb:108:in `add_server_diagnostics'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/bulk_write.rb:196:in `block in execute_operation'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/operation/shared/response_handling.rb:94:in `unpin_maybe'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/bulk_write.rb:190:in `execute_operation'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/bulk_write.rb:222:in `split_execute'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/bulk_write.rb:213:in `block in execute_operation'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/operation/shared/response_handling.rb:94:in `unpin_maybe'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/bulk_write.rb:212:in `rescue in execute_operation'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/bulk_write.rb:185:in `execute_operation'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/bulk_write.rb:70:in `block (3 levels) in execute'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/retryable.rb:244:in `block in write_with_retry'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/server/connection_pool.rb:666:in `with_connection'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/server.rb:448:in `with_connection'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/retryable.rb:232:in `write_with_retry'
~/.rbenv/versions/2.7.6/lib/ruby/2.7.0/forwardable.rb:235:in `write_with_retry'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/bulk_write.rb:69:in `block (2 levels) in execute'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/bulk_write.rb:66:in `each'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/bulk_write.rb:66:in `block in execute'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/client.rb:1120:in `with_session'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/bulk_write.rb:64:in `execute'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/collection.rb:718:in `bulk_write'
test.rb:20:in `block (2 levels) in <main>'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/session.rb:436:in `block in with_transaction'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/session.rb:428:in `loop'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/session.rb:428:in `with_transaction'
test.rb:18:in `block in <main>'
~/.rbenv/versions/2.7.6/lib/ruby/gems/2.7.0/gems/mongo-2.18.0.beta1/lib/mongo/client.rb:996:in `start_session'
test.rb:17:in `<main>'
W, [2022-07-07T11:49:53.326586 #730090]  WARN -- : MONGODB | Aborting transaction due to Mongo::Error::OperationFailure: [251:NoSuchTransaction]: Given transaction number 1 does not match any in-progress transactions. The active transaction number is -1 (on 127.0.0.1:27017, modern retry, attempt 1)

Message exceeds allowed max message size. The max is 48000000. (on 127.0.0.1:27017) (Mongo::Error::MaxMessageSize)