Method invalidate

src/Scanner.java:1117–1120

Invalidates this scanner and makes it assume it's no longer opened. When a RegionServer goes away while we're scanning it, or some other type of access problem happens, this method should be called so that the scanner will have to re-locate the RegionServer and re-open itself.

()

   * scanner will have to re-locate the RegionServer and re-open itself.
   */
  void invalidate() {
    region = null;
    scannerClosedOnServer = false;
  }

  /**
   * Returns the region currently being scanned, if any.