For a combined transaction, after you get its percentage, distribute the percentage to member transactions based on your experience when you design the percentage oftesttransactions.
Visa, a credit-card company, in a recent trial with Hadoop crunched two years oftest records, or 73 billion transactions, amounting to 36 terabytes of data.
信用卡公司Visa最近和Hadoop试着计算两年的测试记录,即730亿笔交易,高达36tb的数据。
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In our test environment, we compare some the performance of some transactions before and after tuning.