@Override
  public void oplogRecovered(long oplogId) {
    try {
      writer.writeBatch(currentOplogEntries);
    } catch (IOException e) {
      throw new DiskAccessException("Error during export", e, getDiskStore());
    }
    currentOplogEntries.clear();
  }
An implementation if DiskRegion used for offline export. After each oplog is recovered this disk
region passes the contents recovered from the oplog to an ExportWriter, which can export those
entries.
geode-core/src/main/java/org/apache/geode/internal/cache/ExportDiskRegion.java