We encountered the same issue with a small data region (64Mb in our case). If I recall correctly the failure was due to the checkpointing mechanism not having enough pages to perform a checkpoint, rather than a critical failure on a Put(). Adding more memory increases the number of pages (or you can use a smaller page size).
Editorial note: Personally, I don't like this failure mode. While increasing the available memory does 'make the problem go away', it feels more a case of kicking the can down the road in that later increases in load may bring about the same conditions. Modifying the checkpoint triggers to checkpoint more often, or on a smaller fraction of dirty pages is another approach that can be taken to mitigate the issue. On Thu, Jun 3, 2021 at 5:02 AM Stephen Darlington < stephen.darling...@gridgain.com> wrote: > Your data region is too small. Ignite is an in-memory data grid, it’s not > really designed to work with as little as 40Mb of memory. > > When I tried it on my machine, I get the following message: > > [17:42:09,246][SEVERE][checkpoint-runner-cpu-#80][] JVM will be halted > immediately due to the failure: [failureCtx=FailureContext > [type=CRITICAL_ERROR, err=class o.a.i.i.mem.IgniteOutOfMemoryException: > Failed to find a page for eviction [segmentCapacity=1580, loaded=620, > maxDirtyPages=465, dirtyPages=620, cpPages=0, pinnedInSegment=0, > failedToPrepare=620] > Out of memory in data region [name=default, initSize=20.0 MiB, > maxSize=20.0 MiB, persistenceEnabled=true] Try the following: > ^-- Increase maximum off-heap memory size > (DataRegionConfiguration.maxSize) > > Basically, it’s writing to the cluster faster than it can write the > changes to disk. As it says, increase the amount of off-heap memory. > > If you’re getting the same error, you might be able to get it to work by > feeding the data in more slowly. > > On 2 Jun 2021, at 16:44, gigabot <mwiesenb...@gmail.com> wrote: > > Hi I tried setting the MaxSize on a cache to a low number (40Mb) and it > quickly ran in to an IgniteOutOfMemoryException, despite the fact there was > plenty of space on disk. Why would it run out of RAM if it can persist data > above the MaxSize the excess to disk? > > > > -- > Sent from: http://apache-ignite-users.70518.x6.nabble.com/ > > > > -- <http://www.trimble.com/> Raymond Wilson Trimble Distinguished Engineer, Civil Construction Software (CCS) 11 Birmingham Drive | Christchurch, New Zealand raymond_wil...@trimble.com <https://worksos.trimble.com/?utm_source=Trimble&utm_medium=emailsign&utm_campaign=Launch>
