marko 6378cae6bb branches/zip: Prevent infinite B-tree page splits by ensuring that ... there will always be enough space for two node pointer records in an empty B-tree page. This was reported as Mantis issue #73. page_zip_rec_needs_ext(): Add the parameter n_fields, for accurate estimation of the compressed size of the data dictionary information. Given that this function is only invoked for records on leaf pages, require that there be enough space for one record in the compressed page. We check elsewhere that there will be enough room for two node pointer records on higher-level pages. btr_cur_optimistic_insert(): Ensure that there will be enough room for two node pointer records on an empty non-leaf page. The rule for leaf-page records will be enforced by the callers of page_zip_rec_needs_ext(). btr_cur_pessimistic_insert(): Remove the insufficient check that the leaf page record should be compressible by itself. Instead, now we require that two node pointer records fit on a non-leaf page, and one record will fit in uncompressed form on the leaf page. page_zip_write_header(), page_zip_write_rec(): Re-enable the debug assertions that were violated by the insufficient check in btr_cur_pessimistic_insert(). innodb_bug36172.test: Use a larger compressed page size.		2008-09-17 06:23:52 +00:00
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data0data.c	branches/zip: Prevent infinite B-tree page splits by ensuring that	2008-09-17 06:23:52 +00:00
data0type.c	branches/zip: Hide some global variables that were accidentally not hidden	2008-02-06 16:11:46 +00:00