TeslaCN commented on issue #13688:
URL: 
https://github.com/apache/shardingsphere/issues/13688#issuecomment-973774425


   I tried delaying the flush and no error occurred.
   
   
![image](https://user-images.githubusercontent.com/20503072/142572122-75b9deaf-37f6-43d9-9a4a-aff2f48df277.png)
   
   ```
   >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Transaction on 
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
   sysbench 1.0.20 (using bundled LuaJIT 2.1.0-beta2)
   
   Running the test with following options:
   Number of threads: 256
   Report intermediate results every 10 second(s)
   Initializing random number generator from current time
   
   
   Initializing worker threads...
   
   Threads started!
   
   [ 10s ] thds: 256 tps: 6135.93 qps: 98373.74 (r/w/o: 
61514.86/24561.72/12297.15) lat (ms,99%): 167.44 err/s: 0.00 reconn/s: 0.00
   [ 20s ] thds: 256 tps: 12272.42 qps: 196369.16 (r/w/o: 
122734.06/49088.46/24546.63) lat (ms,99%): 55.82 err/s: 0.00 reconn/s: 0.00
   [ 30s ] thds: 256 tps: 14143.62 qps: 226290.65 (r/w/o: 
141427.12/56575.09/28288.44) lat (ms,99%): 41.10 err/s: 0.00 reconn/s: 0.00
   [ 40s ] thds: 256 tps: 14046.37 qps: 224741.09 (r/w/o: 
140464.65/56182.90/28093.55) lat (ms,99%): 35.59 err/s: 0.00 reconn/s: 0.00
   [ 50s ] thds: 256 tps: 14140.53 qps: 226256.35 (r/w/o: 
141411.35/56562.54/28282.47) lat (ms,99%): 33.12 err/s: 0.00 reconn/s: 0.00
   [ 60s ] thds: 256 tps: 14152.39 qps: 226417.04 (r/w/o: 
141508.70/56601.66/28306.68) lat (ms,99%): 31.94 err/s: 0.00 reconn/s: 0.00
   [ 70s ] thds: 256 tps: 14142.52 qps: 226297.50 (r/w/o: 
141440.19/56570.57/28286.74) lat (ms,99%): 31.94 err/s: 0.00 reconn/s: 0.00
   [ 80s ] thds: 256 tps: 14183.69 qps: 226925.48 (r/w/o: 
141822.82/56733.77/28368.88) lat (ms,99%): 31.37 err/s: 0.00 reconn/s: 0.00
   [ 90s ] thds: 256 tps: 14113.63 qps: 225834.43 (r/w/o: 
141150.43/56455.43/28228.57) lat (ms,99%): 32.53 err/s: 0.00 reconn/s: 0.00
   [ 100s ] thds: 256 tps: 13998.32 qps: 223964.80 (r/w/o: 
139977.68/55989.97/27997.14) lat (ms,99%): 35.59 err/s: 0.00 reconn/s: 0.00
   [ 110s ] thds: 256 tps: 14173.11 qps: 226777.49 (r/w/o: 
141734.72/56695.85/28346.92) lat (ms,99%): 30.81 err/s: 0.00 reconn/s: 0.00
   [ 120s ] thds: 256 tps: 14165.34 qps: 226646.75 (r/w/o: 
141654.40/56660.36/28331.98) lat (ms,99%): 31.37 err/s: 0.00 reconn/s: 0.00
   [ 130s ] thds: 256 tps: 14146.07 qps: 226325.78 (r/w/o: 
141452.98/56579.07/28293.74) lat (ms,99%): 31.94 err/s: 0.00 reconn/s: 0.00
   [ 140s ] thds: 256 tps: 14158.62 qps: 226551.59 (r/w/o: 
141595.58/56637.67/28318.34) lat (ms,99%): 31.37 err/s: 0.00 reconn/s: 0.00
   [ 150s ] thds: 256 tps: 14159.95 qps: 226548.74 (r/w/o: 
141591.66/56635.89/28321.19) lat (ms,99%): 31.37 err/s: 0.00 reconn/s: 0.00
   [ 160s ] thds: 256 tps: 11876.68 qps: 190155.41 (r/w/o: 
118866.61/47534.43/23754.36) lat (ms,99%): 61.08 err/s: 0.00 reconn/s: 0.00
   [ 170s ] thds: 256 tps: 2309.97 qps: 36824.35 (r/w/o: 
22995.95/9208.86/4619.53) lat (ms,99%): 1129.24 err/s: 0.00 reconn/s: 0.00
   [ 180s ] thds: 256 tps: 14041.40 qps: 224689.29 (r/w/o: 
140432.99/56172.50/28083.80) lat (ms,99%): 33.72 err/s: 0.00 reconn/s: 0.00
   [ 190s ] thds: 256 tps: 14165.19 qps: 226622.21 (r/w/o: 
141639.54/56651.28/28331.39) lat (ms,99%): 32.53 err/s: 0.00 reconn/s: 0.00
   [ 200s ] thds: 256 tps: 14186.21 qps: 226971.25 (r/w/o: 
141854.69/56743.14/28373.42) lat (ms,99%): 31.37 err/s: 0.00 reconn/s: 0.00
   [ 210s ] thds: 256 tps: 14156.43 qps: 226510.90 (r/w/o: 
141570.61/56626.42/28313.86) lat (ms,99%): 31.37 err/s: 0.00 reconn/s: 0.00
   [ 220s ] thds: 256 tps: 14098.56 qps: 225588.28 (r/w/o: 
140994.11/56395.94/28198.22) lat (ms,99%): 34.33 err/s: 0.00 reconn/s: 0.00
   [ 230s ] thds: 256 tps: 14183.21 qps: 226920.96 (r/w/o: 
141823.60/56730.64/28366.72) lat (ms,99%): 31.37 err/s: 0.00 reconn/s: 0.00
   [ 240s ] thds: 256 tps: 14203.29 qps: 227255.92 (r/w/o: 
142037.35/56811.28/28407.29) lat (ms,99%): 30.81 err/s: 0.00 reconn/s: 0.00
   [ 250s ] thds: 256 tps: 14158.11 qps: 226531.08 (r/w/o: 
141581.01/56632.15/28317.92) lat (ms,99%): 32.53 err/s: 0.00 reconn/s: 0.00
   [ 260s ] thds: 256 tps: 14192.78 qps: 227068.80 (r/w/o: 
141914.41/56767.73/28386.66) lat (ms,99%): 31.94 err/s: 0.00 reconn/s: 0.00
   [ 270s ] thds: 256 tps: 14134.52 qps: 226168.46 (r/w/o: 
141358.86/56539.66/28269.93) lat (ms,99%): 32.53 err/s: 0.00 reconn/s: 0.00
   [ 280s ] thds: 256 tps: 14022.47 qps: 224345.62 (r/w/o: 
140212.60/56087.38/28045.64) lat (ms,99%): 35.59 err/s: 0.00 reconn/s: 0.00
   [ 290s ] thds: 256 tps: 14143.23 qps: 226303.13 (r/w/o: 
141441.13/56575.13/28286.87) lat (ms,99%): 31.94 err/s: 0.00 reconn/s: 0.00
   [ 300s ] thds: 256 tps: 14158.79 qps: 226529.39 (r/w/o: 
141577.07/56633.45/28318.87) lat (ms,99%): 31.37 err/s: 0.00 reconn/s: 0.00
   [ 310s ] thds: 256 tps: 14163.50 qps: 226630.50 (r/w/o: 
141646.80/56655.60/28328.10) lat (ms,99%): 31.94 err/s: 0.00 reconn/s: 0.00
   [ 320s ] thds: 256 tps: 14127.09 qps: 226037.61 (r/w/o: 
141277.14/56505.68/28254.79) lat (ms,99%): 31.94 err/s: 0.00 reconn/s: 0.00
   [ 330s ] thds: 256 tps: 6305.71 qps: 101007.39 (r/w/o: 
63146.92/25248.05/12612.43) lat (ms,99%): 530.08 err/s: 0.00 reconn/s: 0.00
   [ 340s ] thds: 256 tps: 11191.54 qps: 178942.68 (r/w/o: 
111818.65/44741.55/22382.48) lat (ms,99%): 173.58 err/s: 0.00 reconn/s: 0.00
   [ 350s ] thds: 256 tps: 14135.08 qps: 226159.92 (r/w/o: 
141349.36/56539.31/28271.25) lat (ms,99%): 32.53 err/s: 0.00 reconn/s: 0.00
   [ 360s ] thds: 256 tps: 14116.03 qps: 225869.65 (r/w/o: 
141169.74/56466.84/28233.07) lat (ms,99%): 32.53 err/s: 0.00 reconn/s: 0.00
   [ 370s ] thds: 256 tps: 14140.21 qps: 226226.92 (r/w/o: 
141393.97/56551.03/28281.91) lat (ms,99%): 32.53 err/s: 0.00 reconn/s: 0.00
   [ 380s ] thds: 256 tps: 14158.61 qps: 226515.39 (r/w/o: 
141567.36/56629.42/28318.61) lat (ms,99%): 31.37 err/s: 0.00 reconn/s: 0.00
   [ 390s ] thds: 256 tps: 14062.38 qps: 225035.37 (r/w/o: 
140651.89/56257.12/28126.36) lat (ms,99%): 33.72 err/s: 0.00 reconn/s: 0.00
   [ 400s ] thds: 256 tps: 14052.35 qps: 224828.62 (r/w/o: 
140517.15/56205.68/28105.79) lat (ms,99%): 33.12 err/s: 0.00 reconn/s: 0.00
   [ 410s ] thds: 256 tps: 14122.26 qps: 225961.88 (r/w/o: 
141226.91/56489.34/28245.62) lat (ms,99%): 32.53 err/s: 0.00 reconn/s: 0.00
   [ 420s ] thds: 256 tps: 14103.88 qps: 225653.55 (r/w/o: 
141030.38/56414.11/28209.06) lat (ms,99%): 31.94 err/s: 0.00 reconn/s: 0.00
   [ 430s ] thds: 256 tps: 14107.83 qps: 225711.10 (r/w/o: 
141067.45/56428.10/28215.55) lat (ms,99%): 32.53 err/s: 0.00 reconn/s: 0.00
   [ 440s ] thds: 256 tps: 14114.54 qps: 225837.18 (r/w/o: 
141149.52/56457.37/28230.28) lat (ms,99%): 32.53 err/s: 0.00 reconn/s: 0.00
   [ 450s ] thds: 256 tps: 14089.17 qps: 225430.17 (r/w/o: 
140896.27/56353.47/28180.43) lat (ms,99%): 33.12 err/s: 0.00 reconn/s: 0.00
   [ 460s ] thds: 256 tps: 14048.49 qps: 224787.80 (r/w/o: 
140491.97/56198.75/28097.07) lat (ms,99%): 34.33 err/s: 0.00 reconn/s: 0.00
   [ 470s ] thds: 256 tps: 14114.53 qps: 225834.33 (r/w/o: 
141146.47/56458.81/28229.05) lat (ms,99%): 33.12 err/s: 0.00 reconn/s: 0.00
   [ 480s ] thds: 256 tps: 14124.36 qps: 225970.27 (r/w/o: 
141229.71/56490.74/28249.82) lat (ms,99%): 32.53 err/s: 0.00 reconn/s: 0.00
   [ 490s ] thds: 256 tps: 14109.36 qps: 225760.00 (r/w/o: 
141100.76/56441.22/28218.01) lat (ms,99%): 32.53 err/s: 0.00 reconn/s: 0.00
   [ 500s ] thds: 256 tps: 6565.01 qps: 105033.40 (r/w/o: 
65645.96/26255.93/13131.51) lat (ms,99%): 390.30 err/s: 0.00 reconn/s: 0.00
   [ 510s ] thds: 256 tps: 14091.14 qps: 225466.55 (r/w/o: 
140916.01/56367.76/28182.78) lat (ms,99%): 33.12 err/s: 0.00 reconn/s: 0.00
   [ 520s ] thds: 256 tps: 14008.68 qps: 224135.30 (r/w/o: 
140084.71/56032.13/28018.46) lat (ms,99%): 34.95 err/s: 0.00 reconn/s: 0.00
   [ 530s ] thds: 256 tps: 14157.43 qps: 226526.86 (r/w/o: 
141581.75/56629.24/28315.87) lat (ms,99%): 31.94 err/s: 0.00 reconn/s: 0.00
   [ 540s ] thds: 256 tps: 14085.90 qps: 225372.86 (r/w/o: 
140857.68/56342.99/28172.20) lat (ms,99%): 33.72 err/s: 0.00 reconn/s: 0.00
   [ 550s ] thds: 256 tps: 14076.27 qps: 225211.24 (r/w/o: 
140756.15/56301.76/28153.33) lat (ms,99%): 32.53 err/s: 0.00 reconn/s: 0.00
   [ 560s ] thds: 256 tps: 14116.43 qps: 225877.63 (r/w/o: 
141174.67/56469.91/28233.05) lat (ms,99%): 32.53 err/s: 0.00 reconn/s: 0.00
   [ 570s ] thds: 256 tps: 14089.17 qps: 225426.78 (r/w/o: 
140892.84/56355.19/28178.75) lat (ms,99%): 33.72 err/s: 0.00 reconn/s: 0.00
   [ 580s ] thds: 256 tps: 13981.03 qps: 223680.72 (r/w/o: 
139800.23/55917.13/27963.37) lat (ms,99%): 35.59 err/s: 0.00 reconn/s: 0.00
   [ 590s ] thds: 256 tps: 14097.12 qps: 225551.75 (r/w/o: 
140966.62/56391.39/28193.74) lat (ms,99%): 33.12 err/s: 0.00 reconn/s: 0.00
   [ 600s ] thds: 256 tps: 14071.17 qps: 225142.61 (r/w/o: 
140714.40/56284.68/28143.54) lat (ms,99%): 33.12 err/s: 0.00 reconn/s: 0.00
   SQL statistics:
       queries performed:
           read:                            80633110
           write:                           32252690
           other:                           16127176
           total:                           129012976
       transactions:                        8063311 (13414.53 per sec.)
       queries:                             129012976 (214632.47 per sec.)
       ignored errors:                      0      (0.00 per sec.)
       reconnects:                          0      (0.00 per sec.)
   
   General statistics:
       total time:                          601.0863s
       total number of events:              8063311
   
   Latency (ms):
            min:                                    3.80
            avg:                                   19.08
            max:                                 2611.95
            99th percentile:                       39.65
            sum:                            153858244.84
   
   Threads fairness:
       events (avg/stddev):           31497.3086/3582.35
       execution time (avg/stddev):   601.0088/0.03
   
   ```


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