codope opened a new pull request, #9762:
URL: https://github.com/apache/hudi/pull/9762
### Change Logs
The current algorithm take two passes over the log blocks:
1. First pass to collect all the valid blocks alongwith block instant times
including rollback block's target instant time.
2. Second pass, in rever order of block instant time, to track final
compacted instant times for each block.
Now that we have removed appending to the same log file for multiple
deltacommits, we can probably scan in single pass by keeping an active list or
hash map of block times to their corresponding block, updating as we go.
### Impact
Should improve the performance of `AbstractHoodieLogRecordReader` when log
compaction is involved.
### Risk level (write none, low medium or high below)
low
### Documentation Update
_Describe any necessary documentation update if there is any new feature,
config, or user-facing change_
- _The config description must be updated if new configs are added or the
default value of the configs are changed_
- _Any new feature or user-facing change requires updating the Hudi website.
Please create a Jira ticket, attach the
ticket number here and follow the
[instruction](https://hudi.apache.org/contribute/developer-setup#website) to
make
changes to the website._
### Contributor's checklist
- [ ] Read through [contributor's
guide](https://hudi.apache.org/contribute/how-to-contribute)
- [ ] Change Logs and Impact were stated clearly
- [ ] Adequate tests were added if applicable
- [ ] CI passed
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