# pt-table-checksum 'skipping table .. too many rows' with stock params **URL:** \ **Category:** Percona Toolkit\ **Created:** [July 20, 2013, 10:29pm UTC](https://forums.percona.com/t/pt-table-checksum-skipping-table-too-many-rows-with-stock-params/2832 "2013-07-20T22:29:46Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![mrubin](https://avatars.discourse-cdn.com/v4/letter/m/e19adc/32.png) [@mrubin](https://forums.percona.com/u/mrubin)\ **Post date:** [July 20, 2013, 10:29pm UTC](https://forums.percona.com/t/pt-table-checksum-skipping-table-too-many-rows-with-stock-params/2832/1 "2013-07-20T22:29:46Z")
Hello, I’m receiving the below error: 07-20T02:00:08 Skipping table dropbox.ProcessBootUps because on the master it would be checksummed in one chunk but on these replicas it has too many rows: 46198 rows on … The current chunk size limit is 31014 rows (chunk size=15507 \* chunk size limit=2.0). With the following command-line: pt-table-checksum --replicate=dropbox.checksums --nocheck-replication-filters --databases=dropbox --defaults-file=/root/.my.cnf I’ve seen online that this error may result from messing with chunk params (e.g. setting chunk size equal to 0?), but I am not doing that. I have other tables with ~150 million rows and those seem to get processed fine. I tried to poke around the source code a bit… it looks like “$o-\>get(‘explain’)” didn’t return true and in the else, “$nibble\_iter-\>one\_nibble()” returned true. I’m guessing that one\_nibble() returns true if the table should be processed in one go… but why would that return true here if the table is too big? Thanks for any advice.