# Reversing history: 0 -\> 0 \[...\] Data loss is possible. Aborting.

**URL:** <https://forums.percona.com/t/reversing-history-0-0-data-loss-is-possible-aborting/4487>\
**Category:** Percona XtraDB Cluster 5.x\
**Created:** [November 2, 2015, 7:25am UTC](https://forums.percona.com/t/reversing-history-0-0-data-loss-is-possible-aborting/4487 "2015-11-02T07:25:39Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Marco\_Correia](https://avatars.discourse-cdn.com/v4/letter/m/7bcc69/32.png) [@Marco\_Correia](https://forums.percona.com/u/Marco_Correia)\
**Post date:** [November 2, 2015, 7:25am UTC](https://forums.percona.com/t/reversing-history-0-0-data-loss-is-possible-aborting/4487/1 "2015-11-02T07:25:39Z")

</div>

Hi,

Searching for this error message on the Internet shows some some results, although nothing seems to apply to my case. In any case apologies if I’m doing something really dumb.

I have a 3 node cluster running mysql+percona just fine (under docker containers). Then I do one of the following:

Case 1:

I (gracefully) terminate one of the nodes and then start it again.

Case 2:

I (gracefully) terminate one of the nodes, delete the grastate.dat and gvwstate.dat and then bring the node up again.

In case 1 I get:

Reversing history: 0 → 0, this member has applied … more events than the primary component.Data loss is possible. Aborting.

and mysqld terminates. In case 2 I have no error messages and everything seems to work, but obviously this is not the way I should be doing it.

The logs are:  
case1 (bad): [url][https://www.refheap.com/111281[/url]](https://www.refheap.com/111281%5B/url%5D)  
case2 (good): [url][https://www.refheap.com/111282[/url]](https://www.refheap.com/111282%5B/url%5D)

I would be very grateful if someone could give me any hint on what I could be doing wrong.

Thanks!  
Marco