Re: PacketTooBigException with mysql-connector-java 8.0.29
Posted by: Ionel Sirbu
Date: September 16, 2022 09:46AM

Hi Filipe,

Many thanks for your reply!

Unfortunately I don't have that much time to prepare any tests right now, bit of a busy time.

Re. the character set, that's set as `utf8` at schema level & I can confirm it's being used after debugging.
And speaking of debugging, I did some digging, trying to understand what gets executed differently between the 2 versions of the library & I can say that:
- 8.0.29 processes the field in question as a stream, whereas 8.0.28 does not;
- 8.0.28 sends the byte[] as is;
- 8.0.29 escapes the bytes in ReaderValueEncoder -> readBytes() -> escapeBytesIfNeeded().
`this.serverSession.getCharsetSettings().isMultibyteCharset(this.charEncoding.getValue())` returns true in my case, which then goes on to double the byte array in size.

Beyond that, I'm clueless as to how I can tackle this still.

Cheers,
Ionel

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Re: PacketTooBigException with mysql-connector-java 8.0.29
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