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https://issues.apache.org/jira/browse/AVRO-3642?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martin Tzvetanov Grigorov resolved AVRO-3642.
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Fix Version/s: 1.12.0
1.11.2
Assignee: Martin Tzvetanov Grigorov
Resolution: Fixed
> GenericSingleObjectReader::read_value fails on non-exhaustive read
> ------------------------------------------------------------------
>
> Key: AVRO-3642
> URL: https://issues.apache.org/jira/browse/AVRO-3642
> Project: Apache Avro
> Issue Type: Bug
> Components: rust
> Reporter: David Peklak
> Assignee: Martin Tzvetanov Grigorov
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.12.0, 1.11.2
>
> Time Spent: 1h 40m
> Remaining Estimate: 0h
>
> There is a bug in the Rust implementation of
> [GenericSingleObjectReader::read_value|https://docs.rs/apache-avro/0.14.0/apache_avro/struct.GenericSingleObjectReader.html#method.read_value],
> which is exposed when a call to reader.read reads less than 10 bytes. This
> is a valid scenario, as according to the documentation of
> [Read::read|https://doc.rust-lang.org/std/io/trait.Read.html#tymethod.read],
> "It is not an error if the returned value {{n}} is smaller than the buffer
> size, even when the reader is not at the end of the stream yet." This is also
> a real-life scenario: in my use-case, I am chaining three implementations of
> the Read trait to messages that can be deserialized (one for the two magic
> bytes, one for the schema fingerprint, and one for the actual message
> content). Each call to Read::read only returns the bytes of one chain link,
> so the first call to Read::read only returns 2 bytes.
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