[SPARK-33906][WEBUI] Fix the bug of UI Executor page stuck due to undefined peakMemoryMetrics#30920

Closed

baohe-zhang wants to merge 3 commits intoapache:masterfrom baohe-zhang:SPARK-33906

+56-20

Commits on Dec 24, 2020

Check if the peakMemoryMetrics is undefined before accessing it
Baohe Zhang
committed

Commits on Dec 25, 2020

Update display text to N/A when peakMemoryMetrics is undefined
Baohe Zhang
committed

Commits on Dec 28, 2020

Update display text to 0.0 B / 0.0 B
Baohe Zhang
committed