zhli1142015 opened a new pull request #28859:
URL: https://github.com/apache/spark/pull/28859
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### What changes were proposed in this pull request?
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Update ApplicationStoreInfo.size during HistoryServerDiskManager
initializing.
### Why are the changes needed?
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This PR is for fixing bug
[32024](https://issues.apache.org/jira/browse/SPARK-32024). We found after
history server restart, we would randomly see error
"java.lang.IllegalStateException: Disk usage tracker went negative (now = -***,
delta = -***)" from `HistoryServerDiskManager`.
**Cause**: Reading level db would trigger table file compaction, then it may
cause size of level db directory changed. This size change may not be captured
by `ApplicationStoreInfo`. When service restarts, `currentUsage` is calculated
from real directory size, this value may be less then sum of
`ApplicationStoreInfo.size`. In `makeRoom()` function, outdated value of
`ApplicationStoreInfo.size` is used to update usage. Then `currentUsage`
becomes negative.
**Reproduce**: we can reduce config value of
"spark.history.retainedApplications" and "spark.history.store.maxDiskUsage" to
reproduce this issue in dev environment. 1. start history server, load some
applications and access some pages (maybe "stages" page trigger leveldb
compaction). 2. restart HS, and refresh pages.
I also write an UT to simulate this case.
**Benefit**: this change would help improve history server reliability.
### Does this PR introduce _any_ user-facing change?
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No
### How was this patch tested?
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Add unit test and manually tested it.
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