private static void clearAndClose(List<KeyValueScanner> scanners) {
    if (scanners == null) {
      return;
    }
    for (KeyValueScanner s : scanners) {
      s.close();
    }
    scanners.clear();
  }
Get all scanners with no filtering based on TTL (that happens further down the line).
@param cacheBlocks     cache the blocks or not
@param usePread        true to use pread, false if not
@param isCompaction    true if the scanner is created for compaction
@param matcher         the scan query matcher
@param startRow        the start row
@param includeStartRow true to include start row, false if not
@param stopRow         the stop row
@param includeStopRow  true to include stop row, false if not
@param readPt          the read point of the current scan
@return all scanners for this store
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HStore.java