Communication统计数据有偏差，某些数值永远相差1

{
"byteSpeed":0,
"percentage":1,
"readSucceedBytes":252881,
"readSucceedRecords":3507,
"recordSpeed":0,
"stage":1,
"totalErrorBytes":0,
"totalErrorRecords":0,
"totalReadBytes":252881,
"totalReadRecords":3507,
"waitReaderTime":75732800,
"waitWriterTime":96271200,
"writeReceivedBytes":252881,
"writeReceivedRecords":3508,
"writeSucceedBytes":252881,
"writeSucceedRecords":3508
}

我就同步3507条数据，结果：
writeSucceedRecords，writeReceivedRecords都不对，byteSpeed，recordSpeed一直没数，能否也加上？

No source file, test, or specific entry point is named. Start by tracing the communication-statistics implementation for the reported record counters and speed fields, then reproduce a 3,507-record synchronization. Done means the write counters match the synchronized records and byteSpeed and recordSpeed report values.

Written by the indexing model from the issue text.