Alexander Belyak created IGNITE-7892:

             Summary: Remove aquirence of any locks from toString methods
                 Key: IGNITE-7892
             Project: Ignite
          Issue Type: Wish
          Components: general
    Affects Versions: 2.4
            Reporter: Alexander Belyak

In org.apache.ignite.internal.processors.cache.GridCacheMapEntry we have thread 
safe toString() method that can lead to some hangs of monitoring threads like 
grid-timeout-worker if we try to dump LongRunningOperations with locked entry.
I think that toString methods will never need to be a thread safe and can throw 
ConcurrentModificationException or print inconsistent data, so we must remove 
synchronization from every toString methods in codebase. If we need some 
"consistent" string representation - let's add consistentToString methods or do 
external synchronization.

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