# Persistence failure when replaying events

**URL:** <https://discuss.akka.io/t/persistence-failure-when-replaying-events/1340>\
**Category:** Persistence / Event Sourcing\
**Tags:** akka-cluster\
**Created:** [June 19, 2018, 1:45am UTC](https://discuss.akka.io/t/persistence-failure-when-replaying-events/1340 "2018-06-19T01:45:39Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![walrus](https://avatars.discourse-cdn.com/v4/letter/w/51bf81/32.png) [@walrus](https://discuss.akka.io/u/walrus)\
**Post date:** [June 19, 2018, 1:45am UTC](https://discuss.akka.io/t/persistence-failure-when-replaying-events/1340/1 "2018-06-19T01:45:39Z")

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Greetings,

we’re developing an large akka-cluster system that uses akka-persistence-cassandra with journal events and generates a snapshot every 10 events. after several days of running, i started seeing frequent entries like this in the log. the last known sequence number is always 0, and none of the unexpected seqNr are divisible by 10. i haven’t noticed any cluster or cassandra failures. any thoughts on what may have gone wrong? thank you.

```auto
Persistence failure when replaying events for persistenceId [104693c0-a89c-407f-a941-f22fe22797c7]. Last known sequence number [0]
java.lang.IllegalStateException: Sequence number [1] still missing after [10.00 s], saw unexpected seqNr [73] for persistenceId [104693c0-a89c-407f-a941-f22fe22797c7].

```

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<div class="post-metadata">

**Author:** ![patriknw](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.akka.io/patriknw/32/89_2.png) [@patriknw](https://discuss.akka.io/u/patriknw)\
**Post date:** [June 20, 2018, 8:19pm UTC](https://discuss.akka.io/t/persistence-failure-when-replaying-events/1340/2 "2018-06-20T20:19:25Z")

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Do you delete events? Can you reproduce it by starting `104693c0-a89c-407f-a941-f22fe22797c7` again? What does the `messages` table look like for `104693c0-a89c-407f-a941-f22fe22797c7` if you query it with cqlsh?