Major - P3 Documentation for memory_page_max configuration option might not have been updated as per the latest develop code. Documentation as of now says:
* @config{memory_page_max, the maximum size a page can grow to in
* memory before being reconciled to disk. The specified size will be
* adjusted to a lower bound of <code>50 * leaf_page_max</code>\, and an
* upper bound of <code>cache_size / 2</code>. This limit is soft - it
* is possible for pages to be temporarily larger than this value. This
* setting is ignored for LSM trees\, see \c chunk_size., an integer
* between 512B and 10TB; default \c 5MB.}
The relevant code looks like the following:
WT_RET(__wt_config_gets(session, cfg, "memory_page_max", &cval)); btree->maxmempage = (uint64_t)cval.val; if (!F_ISSET(conn, WT_CONN_CACHE_POOL)) { if ((cache_size = conn->cache_size) > 0) btree->maxmempage = WT_MIN(btree->maxmempage, cache_size / 10); } /* Enforce a lower bound of a single disk leaf page */ btree->maxmempage = WT_MAX(btree->maxmempage, btree->maxleafpage);
Need to fix the sizes memory_page_max can adjust to.