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new 8281730915c [fix](cloud) Fix SchemaVariablesScanner crash due to
incomplete FE response (#65994) (#66190)
8281730915c is described below
commit 8281730915c42e4e3093ef9f29463fd41ad5c7cb
Author: deardeng <[email protected]>
AuthorDate: Thu Jul 30 09:14:16 2026 +0800
[fix](cloud) Fix SchemaVariablesScanner crash due to incomplete FE response
(#65994) (#66190)
pick from https://github.com/apache/doris/pull/65994
Problem Summary: When the Thrift connection to FE is unstable, a
partially deserialized TShowVariableResult can contain variable rows
with fewer than four fields. SchemaVariablesScanner accessed fields 0
through 3 unconditionally and could crash the BE process. Validate every
row before accessing its fields and return an InternalError asking the
user to retry when the response is incomplete.
### Release note
Fix a BE crash when scanning variables after receiving an incomplete FE
response; the query now returns an error asking the user to retry.
(cherry picked from commit d3bf6b89bdedfa38d17d99c287c2c1b37304cd9f)
### What problem does this PR solve?
Issue Number: close #xxx
Related PR: #xxx
Problem Summary:
### Release note
None
### Check List (For Author)
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