[SPARK-26281][WebUI] Duration column of task table should be executor run time instead of real duration

[gengliangwang]

What changes were proposed in this pull request?

In PR #23081 , the duration column is changed to executor run time. The behavior is consistent with the summary metrics table and previous Spark version.

However, after PR #21688, the issue can be reproduced again.

How was this patch tested?

Before the change, we can see:

1. The minimum duration in aggregation table doesn't match with the task table below.
2. The sorting order is wrong.
   

After the change, the issues are fixed:

[gengliangwang]

@shahidki31 @pgandhi999 @srowen

[shahidki31]

Hi @gengliangwang , It seems, this was already handled in the PR, #23160

[gengliangwang]

Oh, I see. Close this one now.
Please change the title in #23160

[shahidki31]

Thanks. I will update the PR title

[SparkQA]

Test build #99739 has finished for PR 23240 at commit 612c4c7.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.