What is [Full GC (Allocation Failure)

Question

I am seeing Allocation failure in Full GC logging message.

What is Allocation Failure when Full GC?

Is it safe to ignore?

Answer 1

Allocation failure means that there was no enough contiguous memory available in the heap to allocate. GC runs as a result of allocation failure. If there is enough space available after GC has completed then all is good. Allocation failure is different from GC failure. GC failure happens when even after GC has completed there is not enough space available to assign to process.