### What changes were proposed in this pull request? If we meet some unexpected exception, `getPushDataFailCause ` will throw NPE and broke the process of revive and remove push states. Here we should handle the NPE ### Why are the changes needed? ### Does this PR introduce _any_ user-facing change? ### How was this patch tested? Closes #1551 from AngersZhuuuu/CELEBORN-639. Authored-by: Angerszhuuuu <angers.zhu@gmail.com> Signed-off-by: Angerszhuuuu <angers.zhu@gmail.com> |
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