zuston opened a new pull request, #1120:
URL: https://github.com/apache/incubator-uniffle/pull/1120
### What changes were proposed in this pull request?
After merging #1058 , I found the appId existence check is not enough.
Once the shuffle server is restarted, the following shuffleTaskInfo may
exist as
a result of the refreshAppId() method being invoked during the process of
sending/getting data
from the client side. However, it is essential for the app's buffer pool to
exist once it has been registered.
This can serve as a crucial criterion for determining whether the app is not
registered,
especially following a server restart.
### Why are the changes needed?
Follow up the PR #1058
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
1. Existing UTs
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