Hi, This is Haeyoon Cho again to share my observations and work for one of GSoC sub-topics, implementing off-heap SerializedMemoryStore.
I figured out that we need an output stream that can utilize the off-heap memory to achieve the project goal. I have reported this in more detail in JIRA. (link <https://issues.apache.org/jira/browse/NEMO-383>) PR is also available for this issue, which includes simple unit tests. It would be a big help if you could review and give some comments on it. Thank you. Best, Haeyoon
