# pt checksum differente number of chunks in the replica

**URL:** <https://forums.percona.com/t/pt-checksum-differente-number-of-chunks-in-the-replica/4351>\
**Category:** Percona Toolkit\
**Created:** [August 17, 2015, 2:56am UTC](https://forums.percona.com/t/pt-checksum-differente-number-of-chunks-in-the-replica/4351 "2015-08-17T02:56:51Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![marba](https://avatars.discourse-cdn.com/v4/letter/m/8baadc/32.png) [@marba](https://forums.percona.com/u/marba)\
**Post date:** [August 17, 2015, 2:56am UTC](https://forums.percona.com/t/pt-checksum-differente-number-of-chunks-in-the-replica/4351/1 "2015-08-17T02:56:51Z")

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Hello, i’m running pt checksum regularly and i noticed for some tables there is a different number of chunks in the master and in the replica.  
I’m using --replicate heartbeat.checksums and i see in checksums a differet number of rows for some table, if i compare the crc column i don’t see any difference.  
also pt-table-sync doesn’t show any difference.  
can you explain ?  
thank you  
Marco