回复:OutOfMemoryError while doing join operation in flink

2018-11-22 Thread zhijiang
Hi Akshay, Sorrry I have not thought of a proper way to handle single large record in distributed task managers in flink. But I can give some hints for adjusting the related memories for work around OOM issue. Large fraction of memories in task manager are managed by flink for efficiency, and t

回复:OutOfMemoryError while doing join operation in flink

2018-11-22 Thread zhijiang
Hi Akshay, You encountered an existing issue for serializing large records to cause OOM. Every subpartition would create a separate serializer before, and each serializer would maintain an internal bytes array for storing intermediate serialization results. The key point is that these overhead