Anyone know if this can be remedied? ERROR: out of overflow pages in hash index .... This occurred while waiting for a hash index to be created on a 1,580 GB table (Postgres 11.7). We have > 30 TB of space free. Here's the line where I think it gets triggered. https://github.com/postgres/postgres/blob/7559d8ebfa11d98728e816f6b655582ce41150f3/src/backend/access/hash/hashovfl.c#L283 And I found that #define HASH_MAX_BITMAPS Min(BLCKSZ / 8, 1024) So there looks like a maximum size here, but I couldn't find anything in the documentation. What is the maximum size? I am guessing partitioning the table someway might be a workaround, but it doesn't lend itself very well to partitioning (i.e. there's no year column, or category or some such). Help is appreciated!
