yahoNanJing commented on PR #261:
URL: https://github.com/apache/arrow-ballista/pull/261#issuecomment-1260573310
For example, one SQL stage graph snapshot is as follows:
Stage
4(Resolved)
↗
↘
Stage 1(Successful)
Stage 5(Unresolved)
↘
↗
Stage 2(Successful) -> Stage
3(Running)
Both of Stage1 and Stage2 has output shuffle data resides on Executor1.
Unluckily, the Executor1 gets lost. Then tasks for the running Stage3 will fail
due to not being able to fetch shuffle data. For this kind of scenario and
error, by this PR, the ExecutionGraph will be able to continue running with
proper task reset.
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