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  1. Parquet
  2. PARQUET-1993

[C++] Expose when prefetching completes

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      Description

      As a follow up to PARQUET-1820, we should let an application be notified when pre-buffering has completed (e.g. PreBuffer() should return Future<void>). This would let an application pre-buffer some amount of data (across multiple files and/or row groups) and then decode data as it becomes available instead of blocking.

      A more ergonomic API would be to expose Future<RecordBatchReader> or something along those lines.

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            • Assignee:
              lidavidm David Li
              Reporter:
              lidavidm David Li

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