Hi all, mysql-team
i have a very very complicated problem , hope to be clear.
i have a file report (.txt) with about 200,000 data about books (title,
clasif, year, publisher, authors, subjects, etc etc) without tabs or
separation, i built a parser to split each field and works fine.
After each sequential parsing (one book) i upload that info to the
database but in 5 tables (verifying duplication, ids, etc):
book
author
subject
book-author (relationship)
book-subject (relationship)
When i reach the book number 11500 (aprox) mysql shows a deepth fall in
performance , each insertion takes 30 segs or more, even with/without
indexes.
First i though that parsing takes longer, so i parsed the entire file and
generated a java serialized file, then just inserted to db but was
unsuccessfully , still the same performance.
I have calculated the total number of rows for each table and is about
200,000 for books, 150,000 for authors , 130,000 for subjects and relations
can have 250,000 each one.
Any have an idea of how can i upload this information quickly ???
I'll really appreciate any advise.
Carlos
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