# Replication error happened

**URL:** <https://forums.percona.com/t/replication-error-happened/18572>\
**Category:** MySQL & MariaDB\
**Created:** [November 15, 2022, 9:35pm UTC](https://forums.percona.com/t/replication-error-happened/18572 "2022-11-15T21:35:22Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Engineer](https://avatars.discourse-cdn.com/v4/letter/e/8baadc/32.png) [@Engineer](https://forums.percona.com/u/Engineer)\
**Post date:** [November 15, 2022, 9:35pm UTC](https://forums.percona.com/t/replication-error-happened/18572/1 "2022-11-15T21:35:22Z")

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Slave I/O Replication event checksum verification failed while reading from network internal mariadb error 1743

Slave I/O Relay log write failure:could not queue event from master, internal mariadb error :1595

Please help

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**Author:** ![matthewb](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/matthewb/32/34_2.png) [@matthewb](https://forums.percona.com/u/matthewb)\
**Post date:** [November 15, 2022, 10:22pm UTC](https://forums.percona.com/t/replication-error-happened/18572/2 "2022-11-15T22:22:55Z")

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Hello @Engineer,  
Have you tried restarting replication? ‘Checksum failed’ could have been the result of a network packet loss or similar issue. You can also stop replication, and purge out the current relay logs by using ‘RESET SLAVE’ then start replication again. This will fetch fresh data from the upstream source and create new replica logs.

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<div class="post-metadata">

**Author:** ![Engineer](https://avatars.discourse-cdn.com/v4/letter/e/8baadc/32.png) [@Engineer](https://forums.percona.com/u/Engineer)\
**Post date:** [November 15, 2022, 10:41pm UTC](https://forums.percona.com/t/replication-error-happened/18572/3 "2022-11-15T22:41:19Z")

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i issued reset slave and start slave I got this error

An attempt was made to binlog GTID 0-210001-4463101598 which would create an out of order sequence number with existing  
GTID 0-210001-4506648507 , and gtid strict mode is enables

@matthewb please help

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<div class="post-metadata">

**Author:** ![matthewb](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/matthewb/32/34_2.png) [@matthewb](https://forums.percona.com/u/matthewb)\
**Post date:** [November 15, 2022, 11:03pm UTC](https://forums.percona.com/t/replication-error-happened/18572/4 "2022-11-15T23:03:07Z")

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Your GTIDs got messed up somehow with that failed checksum. You’ll need to reset the replica and reset the gtid\_purged before starting replication again.

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<div class="post-metadata">

**Author:** ![Engineer](https://avatars.discourse-cdn.com/v4/letter/e/8baadc/32.png) [@Engineer](https://forums.percona.com/u/Engineer)\
**Post date:** [November 15, 2022, 11:42pm UTC](https://forums.percona.com/t/replication-error-happened/18572/5 "2022-11-15T23:42:58Z")

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How do I achieve that ?

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<div class="post-metadata">

**Author:** ![matthewb](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/matthewb/32/34_2.png) [@matthewb](https://forums.percona.com/u/matthewb)\
**Post date:** [November 16, 2022, 1:49am UTC](https://forums.percona.com/t/replication-error-happened/18572/6 "2022-11-16T01:49:24Z")

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How did you originally set up replication? You need to repeat that process.