# Persistent queue enabled - Version mismatch
**URL:** https://discuss.elastic.co/t/persistent-queue-enabled-version-mismatch/124788
**Category:** Logstash
**Created:** [March 20, 2018, 2:30pm UTC](https://discuss.elastic.co/t/persistent-queue-enabled-version-mismatch/124788 "2018-03-20T14:30:44Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@venkat1234](https://discuss.elastic.co/u/venkat1234)
#### Post date: [March 20, 2018, 2:30pm UTC](https://discuss.elastic.co/t/persistent-queue-enabled-version-mismatch/124788/1 "2018-03-20T14:30:45Z")
Running ELK 5.6.5 with persistent queue enabled in logstash.yml running on centos 7.1
queue.type: persisted
queue.max\_events: 50
Run into following exception frequently
org.logstash.ackedqueue.io.AbstractByteBufferPageIO$PageIOInvalidVersionException: Expected page version=1 but found version=0
entire server running ELK is powered off instantaneously (or sometime given 5 seconds after SIGTERM) for High Availability testing. Only way to recover (restart logstash) is delete the queue and folder.
Is this issue been fixed or any workaround?
--pipeline.unsafe\_shutdown with or without using this startup option didn't make any difference
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [April 17, 2018, 2:30pm UTC](https://discuss.elastic.co/t/persistent-queue-enabled-version-mismatch/124788/2 "2018-04-17T14:30:58Z")
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