EventStore
Why did not released hdd space after deleteSnapshots?
I try use deleteSnapshots but only have incresed space usage. I can't undestand, plugin only stores additional DeleteEvent and don't delete it from the stream in fact?
https://github.com/EventStore/EventStore.Akka.Persistence/blob/35f14449433c227091d28ecedade04bc991e6c1a/src/main/scala/akka/persistence/eventstore/snapshot/EventStoreSnapshotStore.scala#L66
To be fair it is not immutable scavenge can recover space of things you decide to delete.
On Fri, Feb 23, 2018 at 1:49 PM, Yaroslav Klymko [email protected] wrote:
Yes, EventStore is a immutable append only storage.
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Yes, EventStore is an immutable append only storage.
This leads to the inability to use the ES through EventStore.Akka.Persistence in production. In my case with frequent snapshots I have 25% for bussines events and 75% for snapshot events with a simple test.
@AndreyLadniy you still can set up different storage for snapshots, and keep using event store for events
Why do you need your old snapshots? Is something as simple as setting maxCount on snapshot streams enough for you?
@t3hnar Thanks, I already thought about it, if no solutions can be made with the the ES and do it so.
@gregoryyoung I don't need old snapshots, I need only the one last. I can't undestand how it can be made if maxCount can be setted for the concrete stream, but shapshots stream contains the snapshot of every PersistentActor.
@AndreyLadniy could you please double check, there should be separate snapshot stream per persistenceId
I try use maxCount for every snapshot stream. maxCount hides old snapshots, but uses hdd space which releases with scavege only.
So deleteSnapshots can't be used as a part of akka-persistence (for disk space releasing), but deletion can be done with ES side with manual updating maxCount and periodic scavenge
This is correct. You can also use maxAge to keep snapshots for a given period of time.
On Mon, Feb 26, 2018 at 10:33 AM, Andrey Ladniy [email protected] wrote:
I try use maxCount for every snapshot stream. maxCount hides old snapshots, but uses hdd space which releases with scavege only. So deleteSnapshots can't be used as a part of akka-persistence (for disk space releasing), but deletion can be done with ES side with manual updating maxCount and periodic scavenge
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