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https://issues.apache.org/jira/browse/HUDI-6186?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ethan Guo updated HUDI-6186:
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Status: Patch Available (was: In Progress)
> Fix lock identity in InProcessLockProvider
> ------------------------------------------
>
> Key: HUDI-6186
> URL: https://issues.apache.org/jira/browse/HUDI-6186
> Project: Apache Hudi
> Issue Type: Bug
> Components: multi-writer
> Reporter: Ethan Guo
> Assignee: Ethan Guo
> Priority: Blocker
> Labels: pull-request-available
> Fix For: 0.13.1
>
>
> #6847 extends the `InProcessLockProvider` to support multiple tables in the
> same process, by having an in-memory static final map storing the mapping of
> the table base path to the read-write reentrant lock, so that the writer uses
> the corresponding lock based on the base path. When closing the lock
> provider, `close()` removes the lock entry. Since `close()` is called when
> closing the write client, the lock is removed and subsequent concurrent
> writers will get a different lock instance on the same table, causing the
> locking mechanism on the same table to be useless. Take the following
> example where three writers write to the same table concurrently and need to
> acquire the in-process lock:
> ```
> Writer 1: lock |----------------| unlock and close
> Writer 2: try lock | ... lock |------| unlock and close
> Writer 3: try lock | ... lock |------|
> unlock and close
> ```
> after Writer 1 releases the lock and closes the lock provider, the lock
> instance is removed from the map, and Writer 3 will get a different lock
> instance compared to Writer 2.
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