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AppSync high CPU issues and java log files
AppSync 4.4 - we have been seeing many, many phase failure errors, and high CPU consistently. We have added CPU and memory - now at 32GB memory and 8 CPU.
Performance issues persist. Server crawls with HIGH CPU and many errors.
We are using AppSync only for datastore copies on PMAX and Unity, 3 environments.
We have witnessed also the creation of numerous *.hprof java memory dumps that fill up the AppSync Windows VM d volume. We just delete them, but they come back.
DellEMC Support HAS NOT been helpful, asking us to tweak a setting here and there, but these issues persist.
Anyone else experience this? If so, what causes these issues? Any fix?
hernster
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December 16th, 2022 09:00
Working with support, they determined we "likely" had db corruption. We also had issue of Java core dump files being created (as large as 14GB) and filling up the hard drive.
Unfortunately, the only "fix" was to perform a rip and replace. We installed AppSync 4.5 on a new Windows VM, reconfigued the AppSync server from scratch (you can't use a previous version backup - backup file only works with same versions) and things have been running smoothly; all of the issues we had with 4.4 have subsided. This is not an easy option for every environment, depending on your size, but it worked for us. Good luck.
craig.ponto
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December 16th, 2022 09:00
We are seeing the same issue. I've gone though a few version updates with nothing resolving the issue. We see the processes "OpenJDK Platform binary" and "PostgreSQL Server" hitting 100% CPU.