[jira] [Created] (FLINK-12041) Introduce ResettableExternalBuffer to blink batch

[Shang Yuanchun (Jira)]

Jingsong Lee created FLINK-12041:
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             Summary: Introduce ResettableExternalBuffer to blink batch
                 Key: FLINK-12041
                 URL: https://issues.apache.org/jira/browse/FLINK-12041
             Project: Flink
          Issue Type: New Feature
          Components: Table SQL / Runtime
            Reporter: Jingsong Lee
            Assignee: Jingsong Lee


Introduce ResettableExternalBuffer:

A resettable external buffer for binary row. It stores records in memory and spill to disk when memory is not enough. When the spill is completed, the records are written to memory again. The returned iterator reads the data in write order (read spilled records first).
 # It supports infinite length.
 # It can open multiple Iterators.
 # It support new iterator with beginRow.



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