DongPhil Kim created TAJO-1669:
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             Summary: TSQL prints wrong progress occasionally
                 Key: TAJO-1669
                 URL: https://issues.apache.org/jira/browse/TAJO-1669
             Project: Tajo
          Issue Type: Bug
          Components: SQL Shell
            Reporter: DongPhil Kim
            Priority: Minor


Currently, tsql prints wrong progress occasionally.I found that rate of 
progress had updated 64 percent to 63 percent as following:

{code:xml}
Progress: 0%, response time: 2.189 sec
Progress: 0%, response time: 2.197 sec
Progress: 0%, response time: 2.602 sec
Progress: 0%, response time: 3.405 sec
Progress: 0%, response time: 4.408 sec
Progress: 0%, response time: 5.416 sec
Progress: 0%, response time: 6.423 sec
Progress: 0%, response time: 7.428 sec
Progress: 5%, response time: 8.436 sec
Progress: 5%, response time: 9.44 sec
Progress: 24%, response time: 10.449 sec
Progress: 24%, response time: 11.461 sec
Progress: 31%, response time: 12.476 sec
Progress: 31%, response time: 13.485 sec
Progress: 32%, response time: 14.488 sec
Progress: 32%, response time: 15.49 sec
Progress: 32%, response time: 16.492 sec
Progress: 32%, response time: 17.495 sec
Progress: 32%, response time: 18.497 sec
Progress: 32%, response time: 19.5 sec
Progress: 32%, response time: 20.502 sec
Progress: 32%, response time: 21.506 sec
Progress: 32%, response time: 22.514 sec
Progress: 32%, response time: 23.525 sec
Progress: 32%, response time: 24.533 sec
Progress: 32%, response time: 25.538 sec
Progress: 33%, response time: 26.545 sec
Progress: 33%, response time: 27.55 sec
Progress: 33%, response time: 28.556 sec
Progress: 33%, response time: 29.559 sec
Progress: 33%, response time: 30.563 sec
Progress: 33%, response time: 31.566 sec
Progress: 33%, response time: 32.567 sec
Progress: 33%, response time: 33.569 sec
Progress: 33%, response time: 34.57 sec
Progress: 33%, response time: 35.572 sec
Progress: 33%, response time: 36.574 sec
Progress: 33%, response time: 37.576 sec
Progress: 33%, response time: 38.577 sec
Progress: 33%, response time: 39.579 sec
Progress: 33%, response time: 40.581 sec
Progress: 33%, response time: 41.583 sec
Progress: 33%, response time: 42.585 sec
Progress: 33%, response time: 43.587 sec
Progress: 33%, response time: 44.591 sec
Progress: 33%, response time: 45.594 sec
Progress: 33%, response time: 46.601 sec
Progress: 33%, response time: 47.608 sec
Progress: 33%, response time: 48.613 sec
Progress: 33%, response time: 49.622 sec
Progress: 33%, response time: 50.628 sec
Progress: 33%, response time: 51.633 sec
Progress: 33%, response time: 52.638 sec
Progress: 33%, response time: 53.64 sec
Progress: 33%, response time: 54.642 sec
Progress: 33%, response time: 55.644 sec
Progress: 33%, response time: 56.646 sec
Progress: 33%, response time: 57.651 sec
Progress: 33%, response time: 58.657 sec
Progress: 33%, response time: 59.66 sec
Progress: 33%, response time: 60.665 sec
Progress: 33%, response time: 61.671 sec
Progress: 33%, response time: 62.677 sec
Progress: 33%, response time: 63.683 sec
Progress: 33%, response time: 64.689 sec
Progress: 33%, response time: 65.694 sec
Progress: 33%, response time: 66.696 sec
Progress: 33%, response time: 67.701 sec
Progress: 33%, response time: 68.706 sec
Progress: 33%, response time: 69.708 sec
Progress: 33%, response time: 70.71 sec
Progress: 33%, response time: 71.712 sec
Progress: 33%, response time: 72.714 sec
Progress: 33%, response time: 73.717 sec
Progress: 33%, response time: 74.726 sec
Progress: 33%, response time: 75.734 sec
Progress: 33%, response time: 76.739 sec
Progress: 33%, response time: 77.743 sec
Progress: 33%, response time: 78.745 sec
Progress: 33%, response time: 79.746 sec
Progress: 33%, response time: 80.748 sec
Progress: 33%, response time: 81.75 sec
Progress: 33%, response time: 82.752 sec
Progress: 33%, response time: 83.754 sec
Progress: 33%, response time: 84.757 sec
Progress: 33%, response time: 85.763 sec
Progress: 33%, response time: 86.765 sec
Progress: 33%, response time: 87.769 sec
Progress: 33%, response time: 88.775 sec
Progress: 33%, response time: 89.779 sec
Progress: 33%, response time: 90.783 sec
Progress: 33%, response time: 91.791 sec
Progress: 33%, response time: 92.795 sec
Progress: 33%, response time: 93.797 sec
Progress: 33%, response time: 94.799 sec
Progress: 33%, response time: 95.801 sec
Progress: 35%, response time: 96.804 sec
Progress: 35%, response time: 97.805 sec
Progress: 43%, response time: 98.807 sec
Progress: 43%, response time: 99.809 sec
Progress: 44%, response time: 100.815 sec
Progress: 44%, response time: 101.82 sec
Progress: 55%, response time: 102.839 sec
Progress: 55%, response time: 103.861 sec
Progress: 55%, response time: 104.891 sec
Progress: 55%, response time: 105.898 sec
Progress: 61%, response time: 106.905 sec
Progress: 61%, response time: 107.913 sec
Progress: 62%, response time: 108.92 sec
Progress: 62%, response time: 109.922 sec
Progress: 63%, response time: 110.924 sec
Progress: 63%, response time: 111.925 sec
Progress: 65%, response time: 112.927 sec
Progress: 65%, response time: 113.929 sec
Progress: 64%, response time: 114.931 sec
Progress: 64%, response time: 115.933 sec
Progress: 63%, response time: 116.935 sec
Progress: 63%, response time: 117.937 sec
Progress: 62%, response time: 118.939 sec
Progress: 62%, response time: 119.945 sec
Progress: 61%, response time: 120.955 sec
Progress: 61%, response time: 121.961 sec
Progress: 61%, response time: 122.969 sec
Progress: 61%, response time: 123.974 sec
Progress: 61%, response time: 124.977 sec
Progress: 61%, response time: 125.979 sec
Progress: 62%, response time: 126.981 sec
Progress: 62%, response time: 127.982 sec
Progress: 63%, response time: 128.984 sec
Progress: 63%, response time: 129.986 sec
Progress: 64%, response time: 130.988 sec
Progress: 64%, response time: 131.99 sec
Progress: 64%, response time: 132.993 sec
Progress: 64%, response time: 133.994 sec
Progress: 64%, response time: 134.996 sec
Progress: 64%, response time: 135.998 sec
Progress: 64%, response time: 137.0 sec
Progress: 64%, response time: 138.002 sec
Progress: 64%, response time: 139.006 sec
Progress: 64%, response time: 140.013 sec
Progress: 64%, response time: 141.02 sec
Progress: 64%, response time: 142.027 sec
Progress: 64%, response time: 143.034 sec
Progress: 64%, response time: 144.04 sec
Progress: 65%, response time: 145.042 sec
Progress: 65%, response time: 146.046 sec
Progress: 65%, response time: 147.051 sec
Progress: 65%, response time: 148.053 sec
Progress: 66%, response time: 149.055 sec
Progress: 66%, response time: 150.058 sec
Progress: 66%, response time: 151.089 sec
Progress: 66%, response time: 152.094 sec
Progress: 70%, response time: 153.104 sec
Progress: 70%, response time: 154.135 sec
Progress: 74%, response time: 155.142 sec
Progress: 74%, response time: 156.148 sec
Progress: 88%, response time: 157.153 sec
Progress: 88%, response time: 158.174 sec
Progress: 89%, response time: 159.176 sec
Progress: 89%, response time: 160.179 sec
Progress: 93%, response time: 161.181 sec
Progress: 93%, response time: 162.183 sec
Progress: 96%, response time: 163.186 sec
Progress: 96%, response time: 164.188 sec
Progress: 97%, response time: 165.19 sec
Progress: 97%, response time: 166.195 sec
Progress: 98%, response time: 167.199 sec
Progress: 98%, response time: 168.201 sec
Progress: 97%, response time: 169.207 sec
Progress: 97%, response time: 170.215 sec
Progress: 96%, response time: 171.222 sec
Progress: 96%, response time: 172.231 sec
Progress: 95%, response time: 173.236 sec
Progress: 95%, response time: 174.239 sec
Progress: 100%, response time: 175.174 sec
{code}




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