Bug #30293 memory tables with btree indexes .. very weird situation
Submitted: 8 Aug 2007 7:00 Modified: 18 Aug 2007 8:48
Reporter: Jeff C. Email Updates:
Status: Not a Bug Impact on me:
None 
Category:MySQL Server: Memory storage engine Severity:S3 (Non-critical)
Version:5.1.20, 5.0 , 4.1 BK OS:Any
Assigned to: Timothy Smith CPU Architecture:Any
Tags: BTREE, heap, max_heap_table_size, Memory

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: