This was caused by MDEV-25361. If an index or a table has been dropped and the page is marked as freed, we should not report anything. The floating point exception is being reported for entries that are all 0, except for the freed_pages member:
/* update per-index statistics */
{
per_index_stats &index = index_ids[id];
if (is_page_free(xdes, physical_page_size,
page_no)) {
index.free_pages++;
return;
}
index.pages++;
The invocation of std::map::operator[] will allocate and default-initialize an element.
Marko Mäkelä
added a comment - This was caused by MDEV-25361 . If an index or a table has been dropped and the page is marked as freed, we should not report anything. The floating point exception is being reported for entries that are all 0, except for the freed_pages member:
/* update per-index statistics */
{
per_index_stats &index = index_ids[id];
if (is_page_free(xdes, physical_page_size,
page_no)) {
index.free_pages++;
return ;
}
index.pages++;
The invocation of std::map::operator[] will allocate and default-initialize an element.
People
Marko Mäkelä
Edward Stoever
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Resolved:
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The n_leaf_pages is 0 for a particular index it seems (bottom of defrag_analysis function in ./extra/innochecksum.cc).