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https://issues.apache.org/jira/browse/HADOOP-19922?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18089887#comment-18089887
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ASF GitHub Bot commented on HADOOP-19922:
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cxzl25 opened a new pull request, #8553:
URL: https://github.com/apache/hadoop/pull/8553
### Description of PR
The IPC `Server` currently enforces a hard upper limit on RPC request size
via `ipc.maximum.data.length` (default 128 MB). Requests that exceed this limit
are rejected immediately. However, requests that are abnormally large but still
within the limit pass through silently, potentially causing GC pressure and
cascading failures before any operator is aware.
### How was this patch tested?
### For code changes:
- [ ] Does the title or this PR starts with the corresponding JIRA issue id
(e.g. 'HADOOP-17799. Your PR title ...')?
- [ ] Object storage: have the integration tests been executed and the
endpoint declared according to the connector-specific documentation?
- [ ] If adding new dependencies to the code, are these dependencies
licensed in a way that is compatible for inclusion under [ASF
2.0](http://www.apache.org/legal/resolved.html#category-a)?
- [ ] If applicable, have you updated the `LICENSE`, `LICENSE-binary`,
`NOTICE-binary` files?
### AI Tooling
If an AI tool was used:
- [ ] The PR includes the phrase "Contains content generated by <tool>"
where <tool> is the name of the AI tool used.
- [ ] My use of AI contributions follows the ASF legal policy
https://www.apache.org/legal/generative-tooling.html
> Add configurable warn threshold for large IPC RPC request data length
> ---------------------------------------------------------------------
>
> Key: HADOOP-19922
> URL: https://issues.apache.org/jira/browse/HADOOP-19922
> Project: Hadoop Common
> Issue Type: Improvement
> Components: ipc
> Reporter: dzcxzl
> Priority: Minor
>
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