[GitHub] [iceberg] kbendick edited a comment on pull request #3801: Core: fix deadlock in CachingCatalog

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kbendick edited a comment on pull request #3801:
URL: https://github.com/apache/iceberg/pull/3801#issuecomment-1001917591


   > Had a few questions, but in general this looks good to me. I'll need some time after break to really dig into the Caffine library but invalidating cache in the removal listener seems to make more sense to me
   
   Agreed on digging into Caffeine. I've begun doing that as well and plan to upgrade our version after this PR. It is ubiquitous in the rest of our stack too so it's worth knowing well.
   
   But given that the snapshot currently can deadlock under common usage patterns, I'd prefer to ship this and then revisit it if need be. If the deadlock doesn't happen anymore with the snapshot, that will be great.
   
   Then we'll just need to revisit with more knowledge the choice of executor service (possibly making it optionally not synchronous or something). But the deadlock seems important to fix as soon as possible.


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