yihua opened a new pull request, #10575:
URL: https://github.com/apache/hudi/pull/10575
### Change Logs
This PR introduces `SeekableDataInputStream` for random access on a file,
i.e., seeking to a position in a file and reading the content. The random
access on a file is used by the log scanner and reader. Before this PR, the
log reader relies on `FSDataInputStream` which is coupled with Hadoop file
system. To allow Hadoop-independent file systems to be used to read log files,
the interface `SeekableDataInputStream` is introduced to provide random access
APIs without relying on `FSDataInputStream`.
This is part of the effort to provide Hudi storage abstraction and decouple
`hudi-common` from hadoop dependencies. For reference, the single big-change PR
can be found here: #10360.
### Impact
_Describe any public API or user-facing feature change or any performance
impact._
### Risk level (write none, low medium or high below)
_If medium or high, explain what verification was done to mitigate the
risks._
### 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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