MySQL Bugs: #49745: deleteRow() for updatable result sets can cause full table scan

Bug #49745	deleteRow() for updatable result sets can cause full table scan
Submitted:	16 Dec 2009 19:40	Modified:	8 Jan 2010 10:52
Reporter:	Harrison Fisk	Email Updates:
Status:	Closed	Impact on me:	None
Category:	Connector / J	Severity:	S2 (Serious)
Version:	5.1.9+	OS:	Any
Assigned to:	Mark Matthews	CPU Architecture:	Any

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File:	Maximum allowed size is 50MB.
Description:
Privacy:

If the data you need to attach is more than 50MB, you should create a compressed archive of the data, split it to 50MB chunks, and upload each of them as a separate attachment.

To split a large file:

On *nix platforms use the split command e.g. split -b 50MB <my_large_archive> <my_split_archive_prefix>
On windows use WinZip or a similar utility to split the large file

Test case, look at the Handler_read_rnd_next stats. You could also disable the URL UTF8 setting to remove problem.

Attachment: testCase42456.java (text/x-java), 4.22 KiB.

Correct final patch

Attachment: diff.txt (text/plain), 4.62 KiB.