Hi Gabor and Marton,
the taskmanager.memory.preallocate switch basically replaces Flink's
streaming mode.
The current stream runtime code does not operate on managed memory. Hence,
all memory allocated by the memory manager cannot be used for streaming
jobs and is "lost". If the switch is set to
Hello!
We have a strangely behaving iterative Flink job: when we give it more
memory, it gets much slower (more than 10 times). The problem seems to
be mostly caused by GCs. Enabling object reuse didn’t help.
With some profiling and debugging, we traced the problem to the
operators requesting
